subject:(Magnetic equivalent circuit)

1. Plait, Antony. Modélisation multiphysique des régénérateurs magnétocaloriques : Multiphysics modelling of magnetocaloric regenerators.

Degree: Docteur es, Sciences pour l'Ingénieur, 2019, Bourgogne Franche-Comté

URL: http://www.theses.fr/2019UBFCA013

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Les recherches menées dans cette thèse s’inscrivent dans une volonté d’éliminer les gaz aggravant fortement le réchauffement climatique (effet de serre) dans les machines de… (more)

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Les recherches menées dans cette thèse s’inscrivent dans une volonté d’éliminer les gaz aggravant fortement le réchauffement climatique (effet de serre) dans les machines de réfrigération. La réfrigération magnétique active à régénérateur (AMRR), une technologie encore émergente est une réponse possible à ce défi.L’objectif de ce travail de thèse est de proposer une modélisation multiphysique complète d’un banc de tests de régénérateurs magnétocaloriques conciliant les qualités de précision et d’efficacité numérique (temps de calcul).Après une large étude bibliographique des modèles et des prototypes magnétocaloriques les plus récents, une modélisation multiphysique est proposée. Pour cela, trois sous-modèles (magnétostatique, magnétocalorique et thermo-fluidique) sont couplés de manières à prendre en compte l’ensemble des phénomènes se déroulant au sein du régénérateur magnétocalorique pendant les cycles AMRR.Notre modèle est ensuite utilisé pour étudier l’influence des paramètres d’entrée tels que la fréquence des cycles et le taux de balayage du régénérateur sur les performances thermiques du système. Un processus d’optimisation par modulation de ces paramètres au cours du temps est proposé pour diminuer fortement le temps nécessaire pour atteindre le régime stationnaire du régénérateur magnétocalorique dans différentes situations.L’achèvement, la mise au point et la validation du banc magnétocalorique est décrite en détails pour mettre en évidence et mesurer avec précision l’effet magnétocalorique dans le gadolinium, puis pour appliquer les cycles AMRR au régénérateur.Les résultats de ces expériences permettent de valider notre modèle multiphysique avec une très bonne précision, ouvrant la voie à une exploration systématique des performances des futurs régénérateurs conçus au laboratoire.

The research carried out in this thesis is part of a desire to eliminate gases that strongly aggravate global warming (greenhouse effect) in refrigeration machines. Active magnetic regenerative refrigeration (AMRR), a still emerging technology, is a possible answer to this challenge.The objective of this thesis work is to propose a global multiphysics modelling of a test bench for magnetocaloric regenerators combining precision and numerical efficiency (calculation time).After a broad bibliographic study of the most recent magnetocaloric models and prototypes, a multiphysics modelling is proposed. For this purpose, three sub-models (magnetostatic, magnetocaloric and thermo-fluidic) are coupled in order to take into account all the phenomena occurring within the magnetocaloric regenerator during the AMRR cycles.Our model is then used to assess the influence of input parameters such as cycle frequency and regenerator sweep rate on the thermal performance of the system. A process of optimization by modulation of these parameters over time is proposed to significantly reduce the time required to reach the steady state of the magnetocaloric regenerator in different situations.The completion, development and validation of the…

Advisors/Committee Members: Espanet, Christophe (thesis director).

Subjects/Keywords: Optimisation; Modélisation multiphysique; Circuit Magnétique Equivalent; Validation expérimentale; Réfrigération magnétique; Effet magnétocalorique; Optimization; Multiphysics modelling; Magnetic Equivalent Circuit; Magnetocaloric effect; Magnetic refrigeration; Experimental validation; 620

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APA (6^th Edition):

Plait, A. (2019). Modélisation multiphysique des régénérateurs magnétocaloriques : Multiphysics modelling of magnetocaloric regenerators. (Doctoral Dissertation). Bourgogne Franche-Comté. Retrieved from http://www.theses.fr/2019UBFCA013

Chicago Manual of Style (16^th Edition):

Plait, Antony. “Modélisation multiphysique des régénérateurs magnétocaloriques : Multiphysics modelling of magnetocaloric regenerators.” 2019. Doctoral Dissertation, Bourgogne Franche-Comté. Accessed March 01, 2021. http://www.theses.fr/2019UBFCA013.

MLA Handbook (7^th Edition):

Plait, Antony. “Modélisation multiphysique des régénérateurs magnétocaloriques : Multiphysics modelling of magnetocaloric regenerators.” 2019. Web. 01 Mar 2021.

Vancouver:

Plait A. Modélisation multiphysique des régénérateurs magnétocaloriques : Multiphysics modelling of magnetocaloric regenerators. [Internet] [Doctoral dissertation]. Bourgogne Franche-Comté; 2019. [cited 2021 Mar 01]. Available from: http://www.theses.fr/2019UBFCA013.

Council of Science Editors:

Plait A. Modélisation multiphysique des régénérateurs magnétocaloriques : Multiphysics modelling of magnetocaloric regenerators. [Doctoral Dissertation]. Bourgogne Franche-Comté; 2019. Available from: http://www.theses.fr/2019UBFCA013

NSYSU

2. Lin, Hsiu-Ying. An Integrated Machine Iron Loss Estimation Scheme based on Steel Magnetizing Characteristics and Emulated Standard Test Circuit.

Degree: Master, Electrical Engineering, 2012, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0815112-173331

► The objective of this thesis is to provide a reliable and effective iron loss estimation scheme for the electromagnetic steel products in the design and… (more)

Subjects/Keywords: Epstein Frame test; iron loss; Preisach model; magnetic equivalent circuit; hysteresis inner-loop characteristics

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APA (6^th Edition):

Lin, H. (2012). An Integrated Machine Iron Loss Estimation Scheme based on Steel Magnetizing Characteristics and Emulated Standard Test Circuit. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0815112-173331

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lin, Hsiu-Ying. “An Integrated Machine Iron Loss Estimation Scheme based on Steel Magnetizing Characteristics and Emulated Standard Test Circuit.” 2012. Thesis, NSYSU. Accessed March 01, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0815112-173331.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lin, Hsiu-Ying. “An Integrated Machine Iron Loss Estimation Scheme based on Steel Magnetizing Characteristics and Emulated Standard Test Circuit.” 2012. Web. 01 Mar 2021.

Vancouver:

Lin H. An Integrated Machine Iron Loss Estimation Scheme based on Steel Magnetizing Characteristics and Emulated Standard Test Circuit. [Internet] [Thesis]. NSYSU; 2012. [cited 2021 Mar 01]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0815112-173331.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lin H. An Integrated Machine Iron Loss Estimation Scheme based on Steel Magnetizing Characteristics and Emulated Standard Test Circuit. [Thesis]. NSYSU; 2012. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0815112-173331

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

3. Ponce Wong, David E. Design of an Axial Flux Magnetic-geared Motor for Standing-up Assistance.

Degree: Master, IMEPE, 2017, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0822117-155301

► The design procedure for a magnetic geared motor with axial flux to assist the sit-to-stand motion of elderly adults is presented in this paper. The… (more)

Subjects/Keywords: magnetic equivalent circuit; virtual work method; finite element method; stand-up assistance; Axial flux magnetic-geared motor

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APA (6^th Edition):

Ponce Wong, D. E. (2017). Design of an Axial Flux Magnetic-geared Motor for Standing-up Assistance. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0822117-155301

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ponce Wong, David E. “Design of an Axial Flux Magnetic-geared Motor for Standing-up Assistance.” 2017. Thesis, NSYSU. Accessed March 01, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0822117-155301.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ponce Wong, David E. “Design of an Axial Flux Magnetic-geared Motor for Standing-up Assistance.” 2017. Web. 01 Mar 2021.

Vancouver:

Ponce Wong DE. Design of an Axial Flux Magnetic-geared Motor for Standing-up Assistance. [Internet] [Thesis]. NSYSU; 2017. [cited 2021 Mar 01]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0822117-155301.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ponce Wong DE. Design of an Axial Flux Magnetic-geared Motor for Standing-up Assistance. [Thesis]. NSYSU; 2017. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0822117-155301

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Purdue University

4. Horvath, Daniel C. Mixed mesh/nodal magnetic equivalent circuit modeling of a six-phase claw-pole automotive alternator.

Degree: MSECE, Electrical and Computer Engineering, 2016, Purdue University

URL: http://docs.lib.purdue.edu/open_access_theses/775

► Magnetic equivalent circuits (MECs) have been employed by many researchers to model the relationship between magnetic flux and current in electromagnetic systems such as… (more)

▼ Magnetic equivalent circuits (MECs) have been employed by many researchers to model the relationship between magnetic flux and current in electromagnetic systems such as electric machines, transformers and inductors [1] ,[2]. Magnetic circuits are analogous to electric circuits where voltage, current, resistance and conductance are the respective counterparts of magneto-motive force (MMF), magnetic flux, reluctance and permeance. The solution of MECs can be accomplished with the plethora of techniques developed for electrical circuit analysis. Specifically, mesh analysis, based on Kirchoff’s Voltage Law (KVL), and nodal analysis, based on Kirchoffs Current Law (KCL), are two very common solution techniques. Once an MEC is established, the question is often of which circuit analysis technique should be applied in order to minimize computational effort. For linear circuits, there is little advantage to using mesh over nodal analysis. Using one method may yield a system with fewer equations, but for most problems the difference in unknowns is insignificant. When analyzing nonlinear magnetic systems, researchers have noted a significant difference in mesh versus nodal analysis. Derbas et al have noted that for nonlinear MECs a mesh analysis reduces the number of iterations required to solve the nonlinear system using a Newton-Raphson method [3]. It was further shown that for strong nonlinearities caused by magnetic saturation, a nodal-based solution will often fail to converge whereas a mesh-based solution will converge. It is relatively easy to apply MEC analysis to stationary magnetic systems. However, modeling electric machinery with MECs can be challenging since the circuit structure can depend on the position of the rotor. Specifically, in the case in which mesh-based solution techniques are applied, the circuit components representing the airgap will tend to infinite values as stator/rotor structures (i.e. teeth) come into and out of alignment. As a result, one must eliminate these elements and establish new KVL loops with the remaining non-infinite components. Researchers have developed algorithms to automate the loop construction process [4]. However, the algorithms require one to categorize all potential overlap positions, which is a challenge for claw-pole machines. One does not experience this issue in nodal-based solution techniques. However, since machines tend to operate in saturation, issues of convergence are often encountered. In this research, an alternative solution technique is provided in which mesh analysis is used in all magnetically nonlinear flux tubes while nodal analysis is used to solve for quantities in the airgap. This has the potential to use the advantage of each solution technique. This research builds upon that presented in [5], in which permeance expressions for all flux tubes were developed for a nodal MEC model of a three-phase claw-pole alternator with a delta-connected stator. In addition to the mixed mesh/nodal system a second focus is to explore new model… Advisors/Committee Members: Steven D. Pekarek, Steven D. Pekarek, Gregory M. Shaver, Scott D. Sudhoff.

Subjects/Keywords: Applied sciences; Alternator; Claw pole; Lundell; Magnetic equivalent circuit; Mesh; Nodal; Applied Mechanics; Electrical and Computer Engineering; Power and Energy

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APA (6^th Edition):

Horvath, D. C. (2016). Mixed mesh/nodal magnetic equivalent circuit modeling of a six-phase claw-pole automotive alternator. (Thesis). Purdue University. Retrieved from http://docs.lib.purdue.edu/open_access_theses/775

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Horvath, Daniel C. “Mixed mesh/nodal magnetic equivalent circuit modeling of a six-phase claw-pole automotive alternator.” 2016. Thesis, Purdue University. Accessed March 01, 2021. http://docs.lib.purdue.edu/open_access_theses/775.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Horvath, Daniel C. “Mixed mesh/nodal magnetic equivalent circuit modeling of a six-phase claw-pole automotive alternator.” 2016. Web. 01 Mar 2021.

Vancouver:

Horvath DC. Mixed mesh/nodal magnetic equivalent circuit modeling of a six-phase claw-pole automotive alternator. [Internet] [Thesis]. Purdue University; 2016. [cited 2021 Mar 01]. Available from: http://docs.lib.purdue.edu/open_access_theses/775.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Horvath DC. Mixed mesh/nodal magnetic equivalent circuit modeling of a six-phase claw-pole automotive alternator. [Thesis]. Purdue University; 2016. Available from: http://docs.lib.purdue.edu/open_access_theses/775

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

5. Lin, Yu-lung. Design and Analysis of a Flux-Switching Permanent Magnet Generator for Micro-Scale Hydropower System.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2018, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0722118-143955

► In this thesis, a flux switching permanent magnet generator (FSPMG) with three-stages skewing rotor applying in micro-scale hydropower generator was proposed. This innovation structure was… (more)

▼ In this thesis, a flux switching permanent magnet generator (FSPMG) with three-stages skewing rotor applying in micro-scale hydropower generator was proposed. This innovation structure was arranged with a new type rotor called rotor skewing, which can reduce the cogging torque. Based on the inner holes design at rotor, there has six combinations of skewing angle in one rotor. The coil and magnets of FSPMG are located at the same side of outside stator. This arrangement was able to increase the speed adaptability of generator, which resolve the disadvantages of conventional generator only suitable for high speed. In research process, an Insert-mounted permanent magnet generator (IPMG) was used to compare the measurement and simulation results and established the appropriateness between the mathematical models and the actual structures. Then the flux density of magnet and the specification of FSPMG are derived by the method of equivalent magnetic circuit analysis. The dimension is limited at the diameter 12 cm of outer stator and the length 10 cm of stack length. The combination of stator slots and rotor poles are chosen for 12 and 10. The rated speed and the rated power of generator are 1200 rpm and 1 kW. A two-dimensional electromagnetic software ANSYS Maxwell was used to simulate the output performance of FSPMG structure such as flux density, back-EMF, harmonic distortion, core loss, strand loss, cogging torque and the output power in different rotor poles. The simulation results show that the structure of rotor tooth was optimized. At last, one set of FSPMG structure with 12 stator slots and 11 rotor poles are chosen for manufacturing the prototype. The experiment results show that the error of IPMG between the measurement and simulation can reach 2.6%, which confirms the accuracy of the numerical analysis. The simulation results show that the FSPMG can produce 1.1 kW with 6.9 Î© at 1200 rpm. Final, the prototype of FSPMG was measured with open-load test and loaded test with 6.9 Î©, the results are 75.6 V and 991 W. The error between simulation and measurement is 11.5% and 7.1%. The cogging torque measurement was measured in three skewing angle rotors: no skewing, equal difference skewing angle and equal ratio skewing angle. The results show that the cogging torque were 2.13 Nm, 0.85 Nm and 0.55 Nm, which decreased 60% and 74.2% respectively. It is confirmed that the skewing rotor can effectively reduce the cogging torque. This study provides a design and optimization process for FSPMG with a lower cost and high efficiency mathematical simulation analysis, and the skewing rotor effectively reduce the cogging torque and the torque ripple. Advisors/Committee Members: Chang Tang Pan (committee member), Zong Hsin Liu (chair), Jao Hwa Kuang (chair), Yong Jheng Chen (chair), Chung Kun Yen (chair).

Subjects/Keywords: cogging torque; lux switching permanent magnet generator; ANSYS Maxwell; back-EMF; equivalent magnetic circuit analysis; skewing rotor

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APA (6^th Edition):

Lin, Y. (2018). Design and Analysis of a Flux-Switching Permanent Magnet Generator for Micro-Scale Hydropower System. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0722118-143955

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lin, Yu-lung. “Design and Analysis of a Flux-Switching Permanent Magnet Generator for Micro-Scale Hydropower System.” 2018. Thesis, NSYSU. Accessed March 01, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0722118-143955.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lin, Yu-lung. “Design and Analysis of a Flux-Switching Permanent Magnet Generator for Micro-Scale Hydropower System.” 2018. Web. 01 Mar 2021.

Vancouver:

Lin Y. Design and Analysis of a Flux-Switching Permanent Magnet Generator for Micro-Scale Hydropower System. [Internet] [Thesis]. NSYSU; 2018. [cited 2021 Mar 01]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0722118-143955.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lin Y. Design and Analysis of a Flux-Switching Permanent Magnet Generator for Micro-Scale Hydropower System. [Thesis]. NSYSU; 2018. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0722118-143955

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

6. Chang, He-Ling. Analytical multi-parameter interval determinations of the flux-switching permanent magnet motors.

Degree: Master, Electrical Engineering, 2018, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0708118-085732

► Among permanent magnet brushless machines, flux-switching permanent magnet (FSPM) motors provide significant advantages such as high torque density, sinusoidal back electromotive force waveform, and robust… (more)

Subjects/Keywords: magnetic equivalent circuit; flux-switching permanent magnet motor; response surface methodology; mobile auxiliary device; electric vehicle motor

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APA (6^th Edition):

Chang, H. (2018). Analytical multi-parameter interval determinations of the flux-switching permanent magnet motors. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0708118-085732

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chang, He-Ling. “Analytical multi-parameter interval determinations of the flux-switching permanent magnet motors.” 2018. Thesis, NSYSU. Accessed March 01, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0708118-085732.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chang, He-Ling. “Analytical multi-parameter interval determinations of the flux-switching permanent magnet motors.” 2018. Web. 01 Mar 2021.

Vancouver:

Chang H. Analytical multi-parameter interval determinations of the flux-switching permanent magnet motors. [Internet] [Thesis]. NSYSU; 2018. [cited 2021 Mar 01]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0708118-085732.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chang H. Analytical multi-parameter interval determinations of the flux-switching permanent magnet motors. [Thesis]. NSYSU; 2018. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0708118-085732

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

7. Mariani, Guilherme Bueno. Machine synchrone à réluctance : modèles équivalents à réseau de réluctances pour la simulation et l’optimisation : Synchronous Reluctance Machine : magnetic equivalent circuits for simulation and optimization.

Degree: Docteur es, Génie électrique, 2016, Université Grenoble Alpes (ComUE)

URL: http://www.theses.fr/2016GREAT021

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L’enjeu de la thèse concerne la modélisation électromagnétique des machines synchrones à réluctance, avec comme objectif final : obtenir un modèle suffisamment précis et rapide… (more)

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L’enjeu de la thèse concerne la modélisation électromagnétique des machines synchrones à réluctance, avec comme objectif final : obtenir un modèle suffisamment précis et rapide pour, d’une part, être capable de calculer les ondulations de couple et d’autre part servir pour de l’optimisation dimensionnelle et pouvoir être couplé à un logiciel de type circuit pour tester une loi de commande. Un modèle du type schéma réluctant a été mis en place petit à petit avec validations à chaque étape. La modélisation des échanges dans l’entrefer utilise en final une fonction originale (intégrale de Fermi-Dirac) qui a entièrement été paramétrée avec les dimensions caractéristiques de la machine.Ce modèle de la machine, piloté par les courant, a ensuite été couplé avec un circuit électrique grâce à une interface de transformation tension-courant. Les optimisations réalisées avec ce modèle ont permis de mettre en évidence certains manques dans les contraintes dimensionnelles initiales et, celles-ci corrigées, de montrer que ce modèle était parfaitement utilisable pour cette démarche d’optimisation.

This thesis aims the electromagnetic modeling of synchronous reluctance machines, with a final goal: to obtain a fast and sufficiently accurate model, able to calculate the torque ripple and to be used for optimal machine design and also capable to be coupled to circuit software to test control techniques.A MEC (magnetic equivalent circuit) model was created step-by-step and validated at each step. Final model of the air-gap is based on a function (Fermi-Dirac integral), which has been completely parameterized by machine dimensions. This model of the machine is driven by current; afterwards it was coupled with an electric circuit thanks to a voltage-current transformation interface. The optimizations made with the model allowed to highlight some deficiencies in the initial dimensional constraints. After corrections the model could be efficiently used in an optimization process.

Advisors/Committee Members: Yonnet, Jean-Paul (thesis director), Chillet, Christian (thesis director).

Subjects/Keywords: Machine synchrones à reluctance; Modélisation; Réseaux de reluctances; Optimisation; Synchronous reluctance machine; Modeling; Magnetic equivalent circuit; Optimization; 620

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APA (6^th Edition):

Mariani, G. B. (2016). Machine synchrone à réluctance : modèles équivalents à réseau de réluctances pour la simulation et l’optimisation : Synchronous Reluctance Machine : magnetic equivalent circuits for simulation and optimization. (Doctoral Dissertation). Université Grenoble Alpes (ComUE). Retrieved from http://www.theses.fr/2016GREAT021

Chicago Manual of Style (16^th Edition):

Mariani, Guilherme Bueno. “Machine synchrone à réluctance : modèles équivalents à réseau de réluctances pour la simulation et l’optimisation : Synchronous Reluctance Machine : magnetic equivalent circuits for simulation and optimization.” 2016. Doctoral Dissertation, Université Grenoble Alpes (ComUE). Accessed March 01, 2021. http://www.theses.fr/2016GREAT021.

MLA Handbook (7^th Edition):

Mariani, Guilherme Bueno. “Machine synchrone à réluctance : modèles équivalents à réseau de réluctances pour la simulation et l’optimisation : Synchronous Reluctance Machine : magnetic equivalent circuits for simulation and optimization.” 2016. Web. 01 Mar 2021.

Vancouver:

Mariani GB. Machine synchrone à réluctance : modèles équivalents à réseau de réluctances pour la simulation et l’optimisation : Synchronous Reluctance Machine : magnetic equivalent circuits for simulation and optimization. [Internet] [Doctoral dissertation]. Université Grenoble Alpes (ComUE); 2016. [cited 2021 Mar 01]. Available from: http://www.theses.fr/2016GREAT021.

Council of Science Editors:

Mariani GB. Machine synchrone à réluctance : modèles équivalents à réseau de réluctances pour la simulation et l’optimisation : Synchronous Reluctance Machine : magnetic equivalent circuits for simulation and optimization. [Doctoral Dissertation]. Université Grenoble Alpes (ComUE); 2016. Available from: http://www.theses.fr/2016GREAT021

University of Illinois – Urbana-Champaign

8. Sander, Jonathan J. Incorporation of Hysteretic Effects in Model-Order Reduction Analysis of Magnetic Devices.

Degree: MS, Electrical and Computer Engineering, 2009, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/11992

► The ability to predict the properties of magnetic materials in a device is essential to ensuring the correct operation and optimization of the design as… (more)

Subjects/Keywords: hysteresis; model reduction; Magnetic equivalent circuit (MEC)

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APA (6^th Edition):

Sander, J. J. (2009). Incorporation of Hysteretic Effects in Model-Order Reduction Analysis of Magnetic Devices. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/11992

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sander, Jonathan J. “Incorporation of Hysteretic Effects in Model-Order Reduction Analysis of Magnetic Devices.” 2009. Thesis, University of Illinois – Urbana-Champaign. Accessed March 01, 2021. http://hdl.handle.net/2142/11992.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sander, Jonathan J. “Incorporation of Hysteretic Effects in Model-Order Reduction Analysis of Magnetic Devices.” 2009. Web. 01 Mar 2021.

Vancouver:

Sander JJ. Incorporation of Hysteretic Effects in Model-Order Reduction Analysis of Magnetic Devices. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2009. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/2142/11992.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sander JJ. Incorporation of Hysteretic Effects in Model-Order Reduction Analysis of Magnetic Devices. [Thesis]. University of Illinois – Urbana-Champaign; 2009. Available from: http://hdl.handle.net/2142/11992

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of New South Wales

9. Farshadnia, Mohammad. Analysis and Modelling of Fractional-Slot Concentrated-Wound Interior Permanent Magnet Machines.

Degree: Electrical Engineering & Telecommunications, 2016, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/57968 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:45206/SOURCE02?view=true

► This thesis focuses on the analytical modelling of fractional-slot concentrated-wound (FSCW) interior permanent magnet (IPM) machines and establishes a basis for their magnetic and electrical… (more)

▼ This thesis focuses on the analytical modelling of fractional-slot concentrated-wound (FSCW) interior permanent magnet (IPM) machines and establishes a basis for their magnetic and electrical analysis. In the state of the art methods for analyzing such machines, the non-homogeneous magnetic saturation and the non-linear B-H curve of the rotor iron are not considered. Moreover, the effect of the FSCW stator on the machine magnetic characteristics is overlooked.Aiming at precise modelling of FSCW IPM machines’ magnetic and electrical characteristics, a comprehensive mathematical treatment of the stator magneto-motive force (MMF), the IPM rotor non-homogeneous magnetic saturation, and its airgap flux density are presented. The FSCW stator spatial MMF harmonics are analytically formulated, based on which, a novel heuristic algorithm is proposed for the design of optimal winding layouts for multiphase FSCW stators with different slot/pole combinations.The non-homogeneous magnetic saturation of the rotor iron due to its B-H curve and the residual flux of the embedded magnets is modelled and a saturation map is proposed for the rotor iron. Accordingly, a novel airgap function is proposed for FSCW IPM machines taking into account the effect of the FSCW stator and the non-homogeneously saturated rotor. A precise mathematical model is then proposed for calculation of the airgap PM flux density.The proposed mathematical models for the FSCW stator and the IPM rotor are combined to derive detailed mathematical expressions for its operational inductances, electromagnetic torque, torque ripple and their respective subcomponents, as a function of the machine geometry and design parameters. Both normal operation of the machine and open-phase fault condition are considered in the aforementioned formulations. A “maximum torque per ampere” algorithm is then proposed for the machine under an open-phase fault condition in which customized currents are injected such that maximum average torque with a low torque ripple is guaranteed. Lastly, the derived geometry-based models for the machine characteristics are used to propose an extended dq model for FSCW IPM machines which takes into account its non-sinusoidal parameters. The proposed theories and analytical models are validated using finite element analysis and experimental tests on a prototype FSCW IPM machine. Advisors/Committee Members: Fletcher, John, Electrical Engineering & Telecommunications, Faculty of Engineering, UNSW, Dutta, Rukmi, Electrical Engineering & Telecommunications, Faculty of Engineering, UNSW.

Subjects/Keywords: FSCW; Fractional-slot concentrated winding; Permanent magnet machine; PMSM; Magnetic equivalent circuit; Electromagnetic torque; Multiphase machine; Winding design; Inductance calculation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Farshadnia, M. (2016). Analysis and Modelling of Fractional-Slot Concentrated-Wound Interior Permanent Magnet Machines. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/57968 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:45206/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Farshadnia, Mohammad. “Analysis and Modelling of Fractional-Slot Concentrated-Wound Interior Permanent Magnet Machines.” 2016. Doctoral Dissertation, University of New South Wales. Accessed March 01, 2021. http://handle.unsw.edu.au/1959.4/57968 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:45206/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Farshadnia, Mohammad. “Analysis and Modelling of Fractional-Slot Concentrated-Wound Interior Permanent Magnet Machines.” 2016. Web. 01 Mar 2021.

Vancouver:

Farshadnia M. Analysis and Modelling of Fractional-Slot Concentrated-Wound Interior Permanent Magnet Machines. [Internet] [Doctoral dissertation]. University of New South Wales; 2016. [cited 2021 Mar 01]. Available from: http://handle.unsw.edu.au/1959.4/57968 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:45206/SOURCE02?view=true.

Council of Science Editors:

Farshadnia M. Analysis and Modelling of Fractional-Slot Concentrated-Wound Interior Permanent Magnet Machines. [Doctoral Dissertation]. University of New South Wales; 2016. Available from: http://handle.unsw.edu.au/1959.4/57968 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:45206/SOURCE02?view=true

Brno University of Technology

10. Binek, Martin. Optimalizace magnetického obvodu klasického asynchronního motoru při napájecí frekvenci do 210 Hz: Optimization of magnetic circuit of induction motor for frequency up to 210 Hz.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/177797

► This master’s thesis first deals with the theory concerning induction motor. It briefly desbribes the construction of three-phase induction motors, the generation of tractive force,… (more)

Subjects/Keywords: Asynchronní motor; analytický výpočet; RMxprt; simulace; magnetický obvod; náhradní schéma; optimalizace; účinnost; Induction machine; analytical calculation; RMxprt; simulation; magnetic circuit; equivalent circuit; optimization; efficiency

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Binek, M. (2019). Optimalizace magnetického obvodu klasického asynchronního motoru při napájecí frekvenci do 210 Hz: Optimization of magnetic circuit of induction motor for frequency up to 210 Hz. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/177797

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Binek, Martin. “Optimalizace magnetického obvodu klasického asynchronního motoru při napájecí frekvenci do 210 Hz: Optimization of magnetic circuit of induction motor for frequency up to 210 Hz.” 2019. Thesis, Brno University of Technology. Accessed March 01, 2021. http://hdl.handle.net/11012/177797.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Binek, Martin. “Optimalizace magnetického obvodu klasického asynchronního motoru při napájecí frekvenci do 210 Hz: Optimization of magnetic circuit of induction motor for frequency up to 210 Hz.” 2019. Web. 01 Mar 2021.

Vancouver:

Binek M. Optimalizace magnetického obvodu klasického asynchronního motoru při napájecí frekvenci do 210 Hz: Optimization of magnetic circuit of induction motor for frequency up to 210 Hz. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/11012/177797.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Binek M. Optimalizace magnetického obvodu klasického asynchronního motoru při napájecí frekvenci do 210 Hz: Optimization of magnetic circuit of induction motor for frequency up to 210 Hz. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/177797

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Urbana-Champaign

11. Zeng, Yunjia. Modeling and design of near-field antennas with periodic structures.

Degree: PhD, Electrical & Computer Engr, 2017, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/98335

► In this dissertation, the one- and two-dimensional periodic structures are modelled and adopted in the design of near-field antennas. First, the discontinuous Galerkin time-domain (DGTD)… (more)

▼ In this dissertation, the one- and two-dimensional periodic structures are modelled and adopted in the design of near-field antennas. First, the discontinuous Galerkin time-domain (DGTD) method is applied to model the scattering from periodic structures. The modelling of dispersive media is incorporated into a three-dimensional DGTD scheme, which is capable of studying plasmonic periodic structures at optical frequencies. Various numerical examples are presented to demonstrate the applications of the proposed algorithm. Second, a new methodology for modelling and characterization of one-dimensional periodic structures with nonstraight geometries is developed. The one-dimensional zero-phase-shift line (ZPSL) is analyzed to obtain its dispersion characteristics. Equivalent circuit models are proposed to characterize the ZPSL structures. A design guideline is developed and demonstrated to enlarge the interrogation zone of a ZPSL loop antenna for near-field wireless systems. Third, the full dispersion characteristics, including phase and attenuation constants, of the ZPSL are analyzed in a loop configuration. Based on the dispersion characteristics, a periodic ZPSL loop antenna with uniformly distributed unit cells is studied, and a nonperiodic ZPSL loop antenna with nonuniformly arranged unit cells is designed for an improved near-field performance. Fourth, a low-profile directional ZPSL loop antenna is proposed by placing an artificial magnetic conductor (AMC) reflector behind a ZPSL grid-loop antenna. The grid-loop configuration is designed such that an enhanced magnetic field distribution can be realized on the electrically large ZPSL loop antenna with a simple feeding network. The AMC reflector with four-arm spiral unit cells is included to achieve a directional field distribution as well as to further increase the magnetic field intensity. Fifth, two low-profile ZPSL loop antennas are proposed to achieve a directional magnetic near-field distribution. The current distributions on the antennas are studied to realize the desired near-field pattern. Besides the directional distribution, both the antennas exhibit enhanced magnetic field intensities in the forward direction. All of the antennas are exemplified as a reader antenna for ultra-high frequency (UHF) near-field radio frequency identification (RFID) systems. Advisors/Committee Members: Jin, Jianming (advisor), Jin, Jianming (Committee Chair), Bernhard, Jennifer (committee member), Schutt-Aine, Jose (committee member), Gong, Songbin (committee member).

Subjects/Keywords: Numerical method; Periodic structures; Near field; Magnetic field; Dispersion analysis; Equivalent circuit; Loop antenna; Artificial magnetic conductor; Radio frequency identification; Ultrahigh frequency; Directional antenna; Antenna array; Parasitic array

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Zeng, Y. (2017). Modeling and design of near-field antennas with periodic structures. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/98335

Chicago Manual of Style (16^th Edition):

Zeng, Yunjia. “Modeling and design of near-field antennas with periodic structures.” 2017. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed March 01, 2021. http://hdl.handle.net/2142/98335.

MLA Handbook (7^th Edition):

Zeng, Yunjia. “Modeling and design of near-field antennas with periodic structures.” 2017. Web. 01 Mar 2021.

Vancouver:

Zeng Y. Modeling and design of near-field antennas with periodic structures. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2017. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/2142/98335.

Council of Science Editors:

Zeng Y. Modeling and design of near-field antennas with periodic structures. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2017. Available from: http://hdl.handle.net/2142/98335

Texas A&M University

12. Johnson, Matthew Christopher. Design and Analysis of Axial and Radial Flux Magnetic Gears and Magnetically Geared Machines.

Degree: PhD, Electrical Engineering, 2017, Texas A&M University

URL: http://hdl.handle.net/1969.1/191957

► Over the last two decades, magnetic gears and magnetically geared machines gained interest as a promising technology for use in high torque, low speed applications.… (more)

▼ Over the last two decades, magnetic gears and magnetically geared machines gained interest as a promising technology for use in high torque, low speed applications. Magnetic gears accomplish the same task as mechanical gears, but they do so without mechanical contact between the moving components, instead relying on the modulated interaction between the flux generated by magnets on the rotors. Consequently, magnetic gears offer the potential to combine the compact size and cost effectiveness of mechanically geared systems with the reliability and quieter operation of larger direct drive machines. This work focuses on the development of analysis and design techniques for axial and radial flux magnetic gears and magnetically geared machines. Prototypes of an axial flux magnetic gear, a new compact axial flux magnetically geared machine topology, and a large scale inner stator radial flux magnetically geared machine were constructed and tested to calibrate and validate the analysis tools and investigate the practical considerations associated with the technology. Despite conservative design practices, the largest of these machines achieved a torque density of 82.8 kN∙m/m³. Additionally, a MATLAB-based infrastructure was developed for controlling various simulation models and analyzing their results. Specifically, parametric 2D and 3D finite element analysis (FEA) models were employed for most of the studies, including the designs of the magnetically geared machine prototypes. This system was also used to conduct other simulation studies focused on a plethora of critical design trends and multi-faceted characterizations of the technology’s potential. Spurred on by the long simulation times required for FEA models, the later stages of the study describe the development and evaluation of generalized, parametric 2D and 3D magnetic equivalent circuit (MEC) magnetic gear models. These MEC models proved extremely accurate, matching the torque predictions of corresponding FEA models with an average error of less than 2%. The MEC models also achieved simulation speeds up to 300 times faster than those of corresponding FEA models. Collectively, this work provides the tools and methodology for the systematic evaluation of radial and axial flux magnetic gears. It also characterizes design trends for both topologies and validates the results with experimental prototypes. Advisors/Committee Members: Toliyat, Hamid A (advisor), Enjeti, Prasad (committee member), Bhattacharyya, Shankar (committee member), Kim, Won-Jong (committee member).

Subjects/Keywords: Axial Flux; Ferrite; Finite Element Analysis; Magnetically Geared Machines; Magnetic Equivalent Circuit; Magnetic Gears; NdFeB; Optimization; Permanent Magnets; Radial Flux; Torque Density

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Johnson, M. C. (2017). Design and Analysis of Axial and Radial Flux Magnetic Gears and Magnetically Geared Machines. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/191957

Chicago Manual of Style (16^th Edition):

Johnson, Matthew Christopher. “Design and Analysis of Axial and Radial Flux Magnetic Gears and Magnetically Geared Machines.” 2017. Doctoral Dissertation, Texas A&M University. Accessed March 01, 2021. http://hdl.handle.net/1969.1/191957.

MLA Handbook (7^th Edition):

Johnson, Matthew Christopher. “Design and Analysis of Axial and Radial Flux Magnetic Gears and Magnetically Geared Machines.” 2017. Web. 01 Mar 2021.

Vancouver:

Johnson MC. Design and Analysis of Axial and Radial Flux Magnetic Gears and Magnetically Geared Machines. [Internet] [Doctoral dissertation]. Texas A&M University; 2017. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1969.1/191957.

Council of Science Editors:

Johnson MC. Design and Analysis of Axial and Radial Flux Magnetic Gears and Magnetically Geared Machines. [Doctoral Dissertation]. Texas A&M University; 2017. Available from: http://hdl.handle.net/1969.1/191957

NSYSU

13. Chiang, Yi-Hsuan. DSP-based Drive Control of a Non-contacting Steel Plate Conveyance System.

Degree: Master, Electrical Engineering, 2005, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0726105-113850

► The objective of this thesis is to report the concept of driving a non-contacting steel plate conveyance system with a DSP-based closed-loop control structure. The… (more)

Subjects/Keywords: conveyance system; magnetic equivalent circuit; steel plate; linear induction motor

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APA (6^th Edition):

Chiang, Y. (2005). DSP-based Drive Control of a Non-contacting Steel Plate Conveyance System. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0726105-113850

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chiang, Yi-Hsuan. “DSP-based Drive Control of a Non-contacting Steel Plate Conveyance System.” 2005. Thesis, NSYSU. Accessed March 01, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0726105-113850.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chiang, Yi-Hsuan. “DSP-based Drive Control of a Non-contacting Steel Plate Conveyance System.” 2005. Web. 01 Mar 2021.

Vancouver:

Chiang Y. DSP-based Drive Control of a Non-contacting Steel Plate Conveyance System. [Internet] [Thesis]. NSYSU; 2005. [cited 2021 Mar 01]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0726105-113850.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chiang Y. DSP-based Drive Control of a Non-contacting Steel Plate Conveyance System. [Thesis]. NSYSU; 2005. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0726105-113850

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

14. Nedjar, Boumedyen. Modélisation basée sur la méthode des réseaux de perméances en vue de l’optimisation de machines synchrones à simple et à double excitation : Modeling method based on magnetic equivalent circuit for the optimization of single and double excitation synchronous machines.

Degree: Docteur es, Génie électrique, 2011, Cachan, Ecole normale supérieure

URL: http://www.theses.fr/2011DENS0056

►

La traction hybride et/ou électrique est un domaine d’application en pleine croissance présentant une forte restriction en termes d’encombrement. Cela a poussé les concepteurs à… (more)

▼

La traction hybride et/ou électrique est un domaine d’application en pleine croissance présentant une forte restriction en termes d’encombrement. Cela a poussé les concepteurs à créer des structures de machine adaptées. Parmi ces topologies, nous trouvons les machines synchrones à double excitation (MSDE). Ces machines permettent de combiner les avantages d’une machine à aimants et ceux d’une machine à excitation bobinée. Le choix d’un modèle pour ces machines est un élément important dans les étapes d’analyse, d’optimisation et de pré-dimensionnement. Ce mémoire présente une contribution à la modélisation des machines synchrones à simple et à double excitation basée sur la méthode des réseaux de perméances. Trois parties sont ainsi proposées. La première partie de la thèse présente deux états de l’art- un sur les machines synchrones à double excitation et l’autre sur les méthodes de modélisation des machines électriques et principalement la modélisation par réseau de perméances. Dans la deuxième partie, nous abordons la modélisation 2D de la machine synchrone à aimants permanents à concentration de flux avec prise en compte de la rotation et de la saturation. Le but de cette partie est de trouver des méthodes permettant de combiner à la fois temps de calcul et précision. On commence par la modélisation par réseau de perméances en se basant sur un maillage de l’espace d'étude par des réluctances bidirectionnelles, ainsi qu’une comparaison entre calcul du couple par le tenseur de Maxwell et flux-FMM. La deuxième section présente un couplage entre réseaux de perméances et éléments finis. La méthode proposée consiste à résoudre les deux modèles (réluctant et éléments finis) simultanément avec un logiciel EF. Le couplage s’effectue par une équivalence entre les dimensions géométriques et les caractéristiques magnétiques des matériaux. La présentation des différents modèles dans le plan précision-temps de calcul montre l’efficacité de l’utilisation des réseaux de perméances et du couplage comparé au modèle éléments finis. La troisième partie porte sur la modélisation tridimensionnelle des machines synchrones à double excitation. Dans un premier temps, nous présentons une adaptation de la modélisation par réseau de perméances aux structures tridimensionnelles. Puis, nous appliquons ce modèle aux machines synchrones à double excitation. La machine à double excitation à concentration de flux est présentée avec une étude de l’influence du feuilletage sur la capacité de contrôle du flux. Pour améliorer le contrôle du flux d'excitation, une machine à aimants enterrés homopolaire est également étudiée avec l'approche développée. La validation du modèle est réalisée par des éléments finis et des mesures expérimentales. Dans la dernière partie, une comparaison entre configurations homopolaire et bipolaire de la structure à aimants enterrés est effectuée, puis le rotor à concentration de flux est optimisé afin de le comparer à la machine à aimants enterrés.

The electric and / or hybrid driveis are an application area growing…

Advisors/Committee Members: Gabsi, Mohamed Khémis (thesis director).

Subjects/Keywords: Couplage éléments finis réseaux de perméances; Machine synchrone à simple et double excitation; Réseau de perméances; Single-excitation synchronous machine; Double-excitation synchronous machine; Magnetic equivalent circuit modeling

Record Details Similar Records Cite « Share

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Nedjar, B. (2011). Modélisation basée sur la méthode des réseaux de perméances en vue de l’optimisation de machines synchrones à simple et à double excitation : Modeling method based on magnetic equivalent circuit for the optimization of single and double excitation synchronous machines. (Doctoral Dissertation). Cachan, Ecole normale supérieure. Retrieved from http://www.theses.fr/2011DENS0056

Chicago Manual of Style (16^th Edition):

Nedjar, Boumedyen. “Modélisation basée sur la méthode des réseaux de perméances en vue de l’optimisation de machines synchrones à simple et à double excitation : Modeling method based on magnetic equivalent circuit for the optimization of single and double excitation synchronous machines.” 2011. Doctoral Dissertation, Cachan, Ecole normale supérieure. Accessed March 01, 2021. http://www.theses.fr/2011DENS0056.

MLA Handbook (7^th Edition):

Nedjar, Boumedyen. “Modélisation basée sur la méthode des réseaux de perméances en vue de l’optimisation de machines synchrones à simple et à double excitation : Modeling method based on magnetic equivalent circuit for the optimization of single and double excitation synchronous machines.” 2011. Web. 01 Mar 2021.

Vancouver:

Nedjar B. Modélisation basée sur la méthode des réseaux de perméances en vue de l’optimisation de machines synchrones à simple et à double excitation : Modeling method based on magnetic equivalent circuit for the optimization of single and double excitation synchronous machines. [Internet] [Doctoral dissertation]. Cachan, Ecole normale supérieure; 2011. [cited 2021 Mar 01]. Available from: http://www.theses.fr/2011DENS0056.

Council of Science Editors:

Nedjar B. Modélisation basée sur la méthode des réseaux de perméances en vue de l’optimisation de machines synchrones à simple et à double excitation : Modeling method based on magnetic equivalent circuit for the optimization of single and double excitation synchronous machines. [Doctoral Dissertation]. Cachan, Ecole normale supérieure; 2011. Available from: http://www.theses.fr/2011DENS0056

Brno University of Technology

15. Kubenka, Marek. Model synchronního motoru s permanentními magnety se ztrátami: Model of permanent magnet synchronous motor with calulation of iron losses.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/7994

► This master´s thesis deals with permanent magnet synchronous motor, which is part of hybrid system of Toyota Prius. You can find study of this motor… (more)

Subjects/Keywords: Synchronní motor s permanentními magnety; náhradní magnetický ekvivalentní obvod; ztráty v železe; FEMM; Permanent magnet synchronous motor; equivalent magnetic circuit; core losses; FEMM

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kubenka, M. (2019). Model synchronního motoru s permanentními magnety se ztrátami: Model of permanent magnet synchronous motor with calulation of iron losses. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/7994

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kubenka, Marek. “Model synchronního motoru s permanentními magnety se ztrátami: Model of permanent magnet synchronous motor with calulation of iron losses.” 2019. Thesis, Brno University of Technology. Accessed March 01, 2021. http://hdl.handle.net/11012/7994.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kubenka, Marek. “Model synchronního motoru s permanentními magnety se ztrátami: Model of permanent magnet synchronous motor with calulation of iron losses.” 2019. Web. 01 Mar 2021.

Vancouver:

Kubenka M. Model synchronního motoru s permanentními magnety se ztrátami: Model of permanent magnet synchronous motor with calulation of iron losses. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/11012/7994.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kubenka M. Model synchronního motoru s permanentními magnety se ztrátami: Model of permanent magnet synchronous motor with calulation of iron losses. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/7994

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Georgia Tech

16. Shao, Hang. Electro-magnetic modeling and design optimization of synchronous reluctance machines and single-phase induction machines.

Degree: PhD, Electrical and Computer Engineering, 2019, Georgia Tech

URL: http://hdl.handle.net/1853/62272

► The objective of the proposed research is to develop the analytical electro-magnetic (EM) models for synchronous reluctance machines (SynRMs) and single-phase induction machines (IMs), so… (more)

Subjects/Keywords: Synchronous reluctance machines; Maxwell's equations; Magnetic equivalent circuit; Finite element analysis; Particle swarm optimization; Differential evolution; Pareto front; Single-phase induction machines; Multi-objective optimization

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Shao, H. (2019). Electro-magnetic modeling and design optimization of synchronous reluctance machines and single-phase induction machines. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/62272

Chicago Manual of Style (16^th Edition):

Shao, Hang. “Electro-magnetic modeling and design optimization of synchronous reluctance machines and single-phase induction machines.” 2019. Doctoral Dissertation, Georgia Tech. Accessed March 01, 2021. http://hdl.handle.net/1853/62272.

MLA Handbook (7^th Edition):

Shao, Hang. “Electro-magnetic modeling and design optimization of synchronous reluctance machines and single-phase induction machines.” 2019. Web. 01 Mar 2021.

Vancouver:

Shao H. Electro-magnetic modeling and design optimization of synchronous reluctance machines and single-phase induction machines. [Internet] [Doctoral dissertation]. Georgia Tech; 2019. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1853/62272.

Council of Science Editors:

Shao H. Electro-magnetic modeling and design optimization of synchronous reluctance machines and single-phase induction machines. [Doctoral Dissertation]. Georgia Tech; 2019. Available from: http://hdl.handle.net/1853/62272

17. Bernot, Alix. Modélisation et optimisation d'une machine électrique homopolaire en poudre de fer. : Modelling and optimization of an iron powder homopolar electric machine.

Degree: Docteur es, Energie (SPI), 2015, Supélec

URL: http://www.theses.fr/2015SUPL0025

►

Cette thèse présente l’étude d’une machine électrique à stator à flux transverse à griffes. Après une étude du SMC et des structures à flux transverse,… (more)

▼

Cette thèse présente l’étude d’une machine électrique à stator à flux transverse à griffes. Après une étude du SMC et des structures à flux transverse, une structure associant un stator à griffes à un rotor à aimants permanents est choisie. Un modèle de la machine par réseau de réluctances est développé, en s’appuyant sur des simulations éléments finis. Il est ensuite amendé par l’introduction d’hypothèses d’inclinaison de flux dans l’entrefer, puis il est validé par le test d’un prototype. L’architecture est alors optimisée après une analyse détaillée de la circulation des flux, qui permet d’identifier le problème de la saturation du pied de dents. Après des simulations éléments finis de la machine améliorée, un prototype est ensuite testé qui confirme l’apport de la nouvelle architecture.Une version alternative de la machine, avec un bobinage d’excitation au stator et un rotor massif est ensuite proposée. Cette machine promet une fabrication économique et une bonne robustesse. Un modèle analytique est proposé, accompagné d’une étude éléments finis, puis pour finir un prototype est testé. Une version améliorée de cette machine avec un rotor à dents isolés est ensuite proposée : un modèle analytique et des études éléments finis permettent de valider l’intérêt de cette évolution.

This thesis presents the study of a claw-pole transverse flux electric machine. At first, SMC material properties and transverse flux structures are studied, leading to the choice of a structure combining a claw-pole stator and a permanent magnet rotor. The machine is modelled by the means of a magnetic equivalent circuit, with a reluctance network, developed with the help of finite elements simulation. The model is then changed with the introduction of the hypothesis that the flux is bent inside the airgap; it is then validated by the test of a prototype.The architecture of the machine is optimized after a detailed analysis of the flux circulation, leading to the identification of the tooth-tip saturation issue. After finite element simulation of the improved machine, a prototype is later tested, which confirms the gain brought by the new architecture.An alternative version of the machine, with a field winding attached to the stator and a massive rotor is then proposed. This machine promises to be cost-effective to build and robust thanks to its massive rotor. An analytical model of the machine is introduced, along with a finite element simulation, to end with the test of a prototype which confirms the possibilities of this new concept. An improved version of the machine with a rotor with isolated teeth is finally studied, with an analytical model and a finite element leading to the validation of the interest of this evolution.

Advisors/Committee Members: Vannier, Jean-Claude (thesis director).

Subjects/Keywords: SMC; Flux transverse; Machine synchrone à aimants permanents; Machine synchrone à excitation bobinée; Circuit magnétique équivalent; Réluctances; SMC; Transverse flux; Synchronous permanent magnet machine; Synchronous wound excitation machine; Magnetic equivalent circuit; Reluctances

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bernot, A. (2015). Modélisation et optimisation d'une machine électrique homopolaire en poudre de fer. : Modelling and optimization of an iron powder homopolar electric machine. (Doctoral Dissertation). Supélec. Retrieved from http://www.theses.fr/2015SUPL0025

Chicago Manual of Style (16^th Edition):

Bernot, Alix. “Modélisation et optimisation d'une machine électrique homopolaire en poudre de fer. : Modelling and optimization of an iron powder homopolar electric machine.” 2015. Doctoral Dissertation, Supélec. Accessed March 01, 2021. http://www.theses.fr/2015SUPL0025.

MLA Handbook (7^th Edition):

Bernot, Alix. “Modélisation et optimisation d'une machine électrique homopolaire en poudre de fer. : Modelling and optimization of an iron powder homopolar electric machine.” 2015. Web. 01 Mar 2021.

Vancouver:

Bernot A. Modélisation et optimisation d'une machine électrique homopolaire en poudre de fer. : Modelling and optimization of an iron powder homopolar electric machine. [Internet] [Doctoral dissertation]. Supélec; 2015. [cited 2021 Mar 01]. Available from: http://www.theses.fr/2015SUPL0025.

Council of Science Editors:

Bernot A. Modélisation et optimisation d'une machine électrique homopolaire en poudre de fer. : Modelling and optimization of an iron powder homopolar electric machine. [Doctoral Dissertation]. Supélec; 2015. Available from: http://www.theses.fr/2015SUPL0025

18. Bernot, Alix. Modélisation et optimisation d'une machine électrique homopolaire en poudre de fer. : Modelling and optimization of an iron powder homopolar electric machine.

Degree: Docteur es, Energie (SPI), 2015, CentraleSupélec

URL: http://www.theses.fr/2015CSUP0025

►

Cette thèse présente l’étude d’une machine électrique à stator à flux transverse à griffes. Après une étude du SMC et des structures à flux transverse,… (more)

▼

Cette thèse présente l’étude d’une machine électrique à stator à flux transverse à griffes. Après une étude du SMC et des structures à flux transverse, une structure associant un stator à griffes à un rotor à aimants permanents est choisie. Un modèle de la machine par réseau de réluctances est développé, en s’appuyant sur des simulations éléments finis. Il est ensuite amendé par l’introduction d’hypothèses d’inclinaison de flux dans l’entrefer, puis il est validé par le test d’un prototype. L’architecture est alors optimisée après une analyse détaillée de la circulation des flux, qui permet d’identifier le problème de la saturation du pied de dents. Après des simulations éléments finis de la machine améliorée, un prototype est ensuite testé qui confirme l’apport de la nouvelle architecture.Une version alternative de la machine, avec un bobinage d’excitation au stator et un rotor massif est ensuite proposée. Cette machine promet une fabrication économique et une bonne robustesse. Un modèle analytique est proposé, accompagné d’une étude éléments finis, puis pour finir un prototype est testé. Une version améliorée de cette machine avec un rotor à dents isolés est ensuite proposée : un modèle analytique et des études éléments finis permettent de valider l’intérêt de cette évolution.

This thesis presents the study of a claw-pole transverse flux electric machine. At first, SMC material properties and transverse flux structures are studied, leading to the choice of a structure combining a claw-pole stator and a permanent magnet rotor. The machine is modelled by the means of a magnetic equivalent circuit, with a reluctance network, developed with the help of finite elements simulation. The model is then changed with the introduction of the hypothesis that the flux is bent inside the airgap; it is then validated by the test of a prototype.The architecture of the machine is optimized after a detailed analysis of the flux circulation, leading to the identification of the tooth-tip saturation issue. After finite element simulation of the improved machine, a prototype is later tested, which confirms the gain brought by the new architecture.An alternative version of the machine, with a field winding attached to the stator and a massive rotor is then proposed. This machine promises to be cost-effective to build and robust thanks to its massive rotor. An analytical model of the machine is introduced, along with a finite element simulation, to end with the test of a prototype which confirms the possibilities of this new concept. An improved version of the machine with a rotor with isolated teeth is finally studied, with an analytical model and a finite element leading to the validation of the interest of this evolution.

Advisors/Committee Members: Vannier, Jean-Claude (thesis director).

Subjects/Keywords: SMC; Flux transverse; Machine synchrone à aimants permanents; Machine synchrone à excitation bobinée; Circuit magnétique équivalent; Réluctances; SMC; Transverse flux; Synchronous permanent magnet machine; Synchronous wound excitation machine; Magnetic equivalent circuit; Reluctances

Record Details Similar Records Cite « Share

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bernot, A. (2015). Modélisation et optimisation d'une machine électrique homopolaire en poudre de fer. : Modelling and optimization of an iron powder homopolar electric machine. (Doctoral Dissertation). CentraleSupélec. Retrieved from http://www.theses.fr/2015CSUP0025

Chicago Manual of Style (16^th Edition):

Bernot, Alix. “Modélisation et optimisation d'une machine électrique homopolaire en poudre de fer. : Modelling and optimization of an iron powder homopolar electric machine.” 2015. Doctoral Dissertation, CentraleSupélec. Accessed March 01, 2021. http://www.theses.fr/2015CSUP0025.

MLA Handbook (7^th Edition):

Bernot, Alix. “Modélisation et optimisation d'une machine électrique homopolaire en poudre de fer. : Modelling and optimization of an iron powder homopolar electric machine.” 2015. Web. 01 Mar 2021.

Vancouver:

Bernot A. Modélisation et optimisation d'une machine électrique homopolaire en poudre de fer. : Modelling and optimization of an iron powder homopolar electric machine. [Internet] [Doctoral dissertation]. CentraleSupélec; 2015. [cited 2021 Mar 01]. Available from: http://www.theses.fr/2015CSUP0025.

Council of Science Editors:

Bernot A. Modélisation et optimisation d'une machine électrique homopolaire en poudre de fer. : Modelling and optimization of an iron powder homopolar electric machine. [Doctoral Dissertation]. CentraleSupélec; 2015. Available from: http://www.theses.fr/2015CSUP0025

Brno University of Technology

19. Skalka, Miroslav. Analýza vlivu mechanického momentu asynchronního stroje na sycení magnetického obvodu: Mechanical Torque Analysis of Induction Machine Based on Magnetic Circuit Saturation.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/649

► e main goal of this thesis is mechanical torque analysis of induction machine based on magnetic circuit saturation, oversaturated areas classification and the possibility of… (more)

Subjects/Keywords: ANSYS; APDL; asynchronní stroj; elektromagnetické pole; elektromagnetický moment; magnetická indukce; mechanické zatížení; náhradní schéma; přídavný asynchronní moment; pulsační moment; spektrální analýza; sycení magnetického obvodu; vyšší harmonické.; ANSYS; APDL; asynchronous machine; electromagnetic field; electromagnetic torque; magnetic flux density; mechanical load; equivalent circuit; additional asynchronous torque; pulsating torque; spectral analysis; magnetic circuit saturation; high harmonic.

Record Details Similar Records Cite « Share

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Skalka, M. (2019). Analýza vlivu mechanického momentu asynchronního stroje na sycení magnetického obvodu: Mechanical Torque Analysis of Induction Machine Based on Magnetic Circuit Saturation. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/649

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Skalka, Miroslav. “Analýza vlivu mechanického momentu asynchronního stroje na sycení magnetického obvodu: Mechanical Torque Analysis of Induction Machine Based on Magnetic Circuit Saturation.” 2019. Thesis, Brno University of Technology. Accessed March 01, 2021. http://hdl.handle.net/11012/649.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Skalka, Miroslav. “Analýza vlivu mechanického momentu asynchronního stroje na sycení magnetického obvodu: Mechanical Torque Analysis of Induction Machine Based on Magnetic Circuit Saturation.” 2019. Web. 01 Mar 2021.

Vancouver:

Skalka M. Analýza vlivu mechanického momentu asynchronního stroje na sycení magnetického obvodu: Mechanical Torque Analysis of Induction Machine Based on Magnetic Circuit Saturation. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/11012/649.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Skalka M. Analýza vlivu mechanického momentu asynchronního stroje na sycení magnetického obvodu: Mechanical Torque Analysis of Induction Machine Based on Magnetic Circuit Saturation. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/649

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

20. Wang, Xiaoqi. A Dynamic Magnetic Equivalent Circuit Model For Design And Control Of Wound Rotor Synchronous Machines.

Degree: PhD, Electrical and Computer Engineering, 2013, Purdue University

URL: https://docs.lib.purdue.edu/open_access_dissertations/33

► Recently, a new magnetic equivalent circuit (MEC) model was developed to support automated multi-objective design of wound-rotor synchronous machines (WRSMs). In this research, the… (more)

▼ Recently, a new magnetic equivalent circuit (MEC) model was developed to support automated multi-objective design of wound-rotor synchronous machines (WRSMs). In this research, the MEC model and its application have been enhanced. Initial enhancement has focused on using the MEC model to explore machine design and control as a unified problem. Excitation strategies for optimal steady-state performance have been developed. The optimization is implemented in two phases. First, stator and field excitation at rated power is obtained as part of a WRSM design in which the objectives are to minimize machine mass and loss. Second, a map between current and torque is generated using a single-objective optimization in which core, resistive, and switch conduction loss are minimized. Optimal as well as sub-optimal and traditional controls are studied and compared. An interesting result is that a relatively straightforward field-oriented control is consistent with a desire for mass/loss reduction and control simplicity. The applicability of the excitation to systems in which prime mover angular velocity varies and is (un)controllable is considered, as well as its impact on machine design. A second contribution has been the derivation of a mesh-based dynamic MEC model for WRSMs. As part of this effort, a reluctance network has been derived to model flux distribution around damper bar openings. The reluctance network is applicable to a user-defined damper bar pattern, which enables the study of optimal damper bar placement. In addition, Faraday's law is applied to establish a state model in which stator, field, and damper winding flux linkages are selected as state variables. The resulting coupled MEC/state model is solved to obtain transient machine dynamics, including damper bar currents. In addition, skew of the rotor pole is incorporated using a multi-slices model. The proposed dynamic model opens new paths for exploration. Perhaps most significantly, it enables rigorous design of coupled synchronous machine/diode rectifier systems, which are used in numerous applications, but are often designed using rules of tradition created prior to the availability of efficient numerical simulation. Advisors/Committee Members: Steven D. Pekarek, Steven D. Pekarek, Anand Raghunathan, Oleg Wasynczuk, Scott D. Sudhoff.

Subjects/Keywords: damper bar; magnetic equivalent circuit; wound rotor synchronous machine; Electromagnetics and Photonics; Mechanical Engineering

…13 2.3: UI inductor and magnetic equivalent circuit… …Professor: Steve Pekarek. Recently, a new magnetic equivalent circuit (MEC) model was… …Recently, a meshbased steady state magnetic equivalent circuit (MEC) model has been… …versus loss at rated load. Subsequently, the magnetic equivalent circuit is used to establish a… …equivalent magnetic circuit is presented in Figure 2.3, where the magnetic behavior of the UI…

15 more images…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wang, X. (2013). A Dynamic Magnetic Equivalent Circuit Model For Design And Control Of Wound Rotor Synchronous Machines. (Doctoral Dissertation). Purdue University. Retrieved from https://docs.lib.purdue.edu/open_access_dissertations/33

Chicago Manual of Style (16^th Edition):

Wang, Xiaoqi. “A Dynamic Magnetic Equivalent Circuit Model For Design And Control Of Wound Rotor Synchronous Machines.” 2013. Doctoral Dissertation, Purdue University. Accessed March 01, 2021. https://docs.lib.purdue.edu/open_access_dissertations/33.

MLA Handbook (7^th Edition):

Wang, Xiaoqi. “A Dynamic Magnetic Equivalent Circuit Model For Design And Control Of Wound Rotor Synchronous Machines.” 2013. Web. 01 Mar 2021.

Vancouver:

Wang X. A Dynamic Magnetic Equivalent Circuit Model For Design And Control Of Wound Rotor Synchronous Machines. [Internet] [Doctoral dissertation]. Purdue University; 2013. [cited 2021 Mar 01]. Available from: https://docs.lib.purdue.edu/open_access_dissertations/33.

Council of Science Editors:

Wang X. A Dynamic Magnetic Equivalent Circuit Model For Design And Control Of Wound Rotor Synchronous Machines. [Doctoral Dissertation]. Purdue University; 2013. Available from: https://docs.lib.purdue.edu/open_access_dissertations/33

21. Han, Xu 1986-. Discussion of Induction Motor Effect on Rotordynamics.

Degree: PhD, Mechanical Engineering, 2015, Texas A&M University

URL: http://hdl.handle.net/1969.1/154955

► In this dissertation, the influence of using induction motor in machinery train on rotordynamics is discussed. Two areas are considered – the use of variable… (more)

▼ In this dissertation, the influence of using induction motor in machinery train on rotordynamics is discussed. Two areas are considered – the use of variable frequency drives (VFDs), which control and drive the induction motor; and the unstable forces due motor eccentricity, which is resulted from motor rotor lateral motion. VFDs – The dissertation documents fatigue related mechanical failures in VFD motor machinery due to mechanical vibrations excited by drive torque harmonics which are created by PWM switching. Present effort models the coupled system with full electrical system including DC bus, inverter, motor, and an industrial mechanical system including flexible couplings, gearboxes and multiple inertias. The approach extends failure prediction beyond simple occurrence of resonance, to fatigue life evaluation based on Rain-flow algorithm, which is suitable for both steady state and transient startup mechanical response. The use of multilevel inverters is demonstrated having the possibility actually exacerbate resonance and fatigue failure. The model is also compared to an industrial test case, which provides good agreement. Motor eccentricity – In this dissertation, a MEC modeling method is proposed to calculate both the radial and tangential motor eccentric force. The proposed model is also coupled with the motor electric circuit model to provide capability of transient simulation. FEM (Ansys Maxwell) is used to verify the proposed model. Parametric study is performed on the motor radial and tangential eccentric forces. Also a Jeffcott rotor model is used to study the influence of the motor eccentric force on mechanical stability. A stability criteria of the bearing damping is calculated. The motor radial and tangential eccentric forces are all curved fitted to catch their nonlinearity, which are used in time domain simulation. Nonlinear motions are observed, including limit cycle and jumping phenomena. The results of this dissertation show that both the use of VFDs and the motor lateral motion (motor eccentricity) can cause severe mechanical vibration problem in a rotating machinery train. Both of these two problems need to be carefully concerned in design stage. Advisors/Committee Members: Palazzolo, Alan (advisor), Kim, Won-jong (committee member), Toliyat, Hamid (committee member), Suh, Steve (committee member).

Subjects/Keywords: rotordynamics; induction motor; variable frequency drive; motor eccentricity; vibration; magnetic equivalent circuit

…the literatures, magnetic equivalent circuit method (MEC) can be a suitable way 14… …get big damage. The proposed model models the induction motor with equivalent magnetic… …Magnetic inductance of air gap was calculated using equivalent magnetic path. Equivalent system… …89 Fig. 54 Steps to solve coupled magnetic and electric equations… …coupled torsional and lateral vibrations, the magnetic force due to the rotor eccentricity…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Han, X. 1. (2015). Discussion of Induction Motor Effect on Rotordynamics. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/154955

Chicago Manual of Style (16^th Edition):

Han, Xu 1986-. “Discussion of Induction Motor Effect on Rotordynamics.” 2015. Doctoral Dissertation, Texas A&M University. Accessed March 01, 2021. http://hdl.handle.net/1969.1/154955.

MLA Handbook (7^th Edition):

Han, Xu 1986-. “Discussion of Induction Motor Effect on Rotordynamics.” 2015. Web. 01 Mar 2021.

Vancouver:

Han X1. Discussion of Induction Motor Effect on Rotordynamics. [Internet] [Doctoral dissertation]. Texas A&M University; 2015. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1969.1/154955.

Council of Science Editors:

Han X1. Discussion of Induction Motor Effect on Rotordynamics. [Doctoral Dissertation]. Texas A&M University; 2015. Available from: http://hdl.handle.net/1969.1/154955

22. Hasan, Iftekhar, Hasan. Modeling and Analysis of High Torque Density Transverse Flux Machines for Direct-Drive Applications.

Degree: PhD, Electrical Engineering, 2017, University of Akron

URL: http://rave.ohiolink.edu/etdc/view?acc_num=akron1515582377354583

► Commercially available permanent magnet synchronous machines (PMSM) typically use rare-earth-based permanent magnets (PM). However, volatility and uncertainty associated with the supply and cost of rare-earth… (more)

▼ Commercially available permanent magnet synchronous machines (PMSM) typically use rare-earth-based permanent magnets (PM). However, volatility and uncertainty associated with the supply and cost of rare-earth magnets have caused a push for increased research into the development of non-rare-earth based PM machines and reluctance machines. Compared to other PMSM topologies, the Transverse Flux Machine (TFM) is a promising candidate to get higher torque densities at low speed for direct-drive applications, using non-rare-earth based PMs. The TFMs can be designed with a very small pole pitch which allows them to attain higher force density than conventional radial flux machines (RFM) and axial flux machines (AFM).This dissertation presents the modeling, electromagnetic design, vibration analysis, and prototype development of a novel non-rare-earth based PM-TFM for a direct-drive wind turbine application. The proposed TFM addresses the issues of low power factor, cogging torque, and torque ripple during the electromagnetic design phase.An improved Magnetic Equivalent Circuit (MEC) based analytical model was developed as an alternative to the time-consuming 3D Finite Element Analysis (FEA) for faster electromagnetic analysis of the TFM. The accuracy and reliability of the MEC model were verified, both with 3D-FEA and experimental results. The improved MEC model was integrated with a Particle Swarm Optimization (PSO) algorithm to further enhance the capability of the analytical tool for performing rigorous optimization of performance-sensitive machine design parameters to extract the highest torque density for rated speed.A novel concept of integrating the rotary transformer within the proposed TFM design was explored to completely eliminate the use of magnets from the TFM. While keeping the same machine envelope, and without changing the stator or rotor cores, the primary and secondary of a rotary transformer were embedded into the double-sided TFM. The proposed structure allowed for improved flux-weakening capabilities of the TFM for wide speed operations.The electromagnetic design feature of stator pole shaping was used to address the issue of cogging torque and torque ripple in 3-phase TFM. The slant-pole tooth-face in the stator showed significant improvements in cogging torque and torque ripple performance during the 3-phase FEA analysis of the TFM. A detailed structural analysis for the proposed TFM was done prior to the prototype development to validate the structural integrity of the TFM design at rated and maximum speed operation. Vibration performance of the TFM was investigated to determine the structural performance of the TFM under resonance.The prototype for the proposed TFM was developed at the Alternative Energy Laboratory of the University of Akron. The working prototype is a testament to the feasibility of developing and implementing the novel TFM design proposed in this research. Experiments were performed to validate the 3D-FEA electromagnetic and vibration performance result. Advisors/Committee Members: Sozer, Yilmaz (Advisor).

Subjects/Keywords: Electrical Engineering; Electromagnetics; Electric Machine Design, Transverse Flux Machines, Magnetic Equivalent Circuit Modeling, 3D-FEA

…42 IV. MAGNETIC EQUIVALENT CIRCUIT MODEL OF TFM...................................... 44… …4, an improved Magnetic Equivalent Circuit (MEC) based analytical model was… …82 6.6: The equivalent circuit of an ideal transformer… …not contribute to the active magnetic circuit.  Heat from the stator winding is radiated… …FEA) for obtaining the best magnetic circuit to minimize the leakage paths of the…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hasan, Iftekhar, H. (2017). Modeling and Analysis of High Torque Density Transverse Flux Machines for Direct-Drive Applications. (Doctoral Dissertation). University of Akron. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=akron1515582377354583

Chicago Manual of Style (16^th Edition):

Hasan, Iftekhar, Hasan. “Modeling and Analysis of High Torque Density Transverse Flux Machines for Direct-Drive Applications.” 2017. Doctoral Dissertation, University of Akron. Accessed March 01, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=akron1515582377354583.

MLA Handbook (7^th Edition):

Hasan, Iftekhar, Hasan. “Modeling and Analysis of High Torque Density Transverse Flux Machines for Direct-Drive Applications.” 2017. Web. 01 Mar 2021.

Vancouver:

Hasan, Iftekhar H. Modeling and Analysis of High Torque Density Transverse Flux Machines for Direct-Drive Applications. [Internet] [Doctoral dissertation]. University of Akron; 2017. [cited 2021 Mar 01]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=akron1515582377354583.

Council of Science Editors:

Hasan, Iftekhar H. Modeling and Analysis of High Torque Density Transverse Flux Machines for Direct-Drive Applications. [Doctoral Dissertation]. University of Akron; 2017. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=akron1515582377354583

23. Benlamine, Raouf. Etude et réalisation d'une machine électrique à forte densité de couple et fort rapport de sur-couple pour des applications de traction automobile : Study and realization of an electric machine with high torque density and high transient torque capability for automotive applications.

Degree: Docteur es, Génie électrique, 2015, Besançon

URL: http://www.theses.fr/2015BESA2014

►

Le contexte sociétal et environnemental en France et en Europe durant ces dernières années est largement favorable à l’électrification des moyens de transports, principalement les… (more)

▼

Le contexte sociétal et environnemental en France et en Europe durant ces dernières années est largement favorable à l’électrification des moyens de transports, principalement les véhicules, afin de réduire les émissions de CO2. Les pouvoirs publics déploient d’importants efforts afin de rendre les véhicules électrifiés plus accessibles aux citoyens, en octroyant des primes conséquentes lors de l’achat de véhicules « propres ». De leur côté, les constructeurs automobiles cherchent à diminuer le coût des véhicules électriques et hybrides en proposant des solutions techniques pouvant réduire le coût de fabrication des organes, principalement les batteries, les moteurs thermiques et électriques, tout en assurant des performances élevés. L’objectif principal de cette thèse est d’étudier et de réaliser une machine électrique répondant à un cahier des charges très contraignant en termes d’encombrement axial et de densité de couple pour une application comme moteur de traction d’un véhicule hybride. De plus, cette machine doit être innovante, robuste et dont le procédé de fabrication est automatisable et à faible coût. Ainsi, un état de l’art élargi sur les différentes machines électriques a été effectué. En fonction des exigences liées à notre application, une machine à flux axial à aimants permanents enterrés à bobinage concentrique a été choisie.Initialement, un modèle analytique simplifié a été établi et couplé à un outil d’optimisation. Les paramètres géométriques et électriques obtenus ont été alors réajustés en utilisant un modèle numérique basé sur les éléments finis 3D. Différentes modifications ont été apportées à cette machine initiale en raison de l’évolution du cahier des charges des performances et des contraintes géométriques. Les grandeurs électromagnétiques telles que le couple et la puissance ont été analysées pour différents points de fonctionnement. Les pertes dans les aimants permanents ont été calculées en développant un modèle numérique hybride basé sur les différences finies 3D, réduisant ainsi le temps de calcul comparativement aux éléments finis 3D. Afin de valider les différents résultats obtenus, un prototype de la machine a été réalisé. Cette machine a également été modélisée en utilisant les Circuits Equivalents Magnétiques quasi-3D. Ce modèle semi-analytique est générique par rapport aux dimensions géométriques et électriques, avec une discrétisation adaptative. De plus, les effets de denture et de saturation sont pris en compte. Les inductions magnétiques, les flux magnétiques et le couple électromagnétique ont pu être obtenus avec ce modèle, en assurant une bonne précision et un temps de calcul réduit comparativement aux éléments finis 3D.

The societal and environmental context in France and Europe during the last few years has been largely favorable to the electrification of transportation means, mainly vehicles, in order to reduce CO2 emissions. The authorities are working hard to make the electrified vehicles more affordable, by providing substantial premiums during the purchase of…

Advisors/Committee Members: Espanet, Christophe (thesis director), Randi, Sid-Ali (thesis director), Dubas, Frédéric (thesis director).

Subjects/Keywords: Aimants enterrés; Circuits équivalents magnétiques; Contrôle optimal; Effet de saturation; Flux axial; Optimisation multicritère; Pertes par courants de Foucault; Buried PM; Magnetic equivalent circuit; Optimal control; Saturation effect; Axial-flux; Multi-objective optimization; Eddy-current losses; 629.2

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Benlamine, R. (2015). Etude et réalisation d'une machine électrique à forte densité de couple et fort rapport de sur-couple pour des applications de traction automobile : Study and realization of an electric machine with high torque density and high transient torque capability for automotive applications. (Doctoral Dissertation). Besançon. Retrieved from http://www.theses.fr/2015BESA2014

Chicago Manual of Style (16^th Edition):

Benlamine, Raouf. “Etude et réalisation d'une machine électrique à forte densité de couple et fort rapport de sur-couple pour des applications de traction automobile : Study and realization of an electric machine with high torque density and high transient torque capability for automotive applications.” 2015. Doctoral Dissertation, Besançon. Accessed March 01, 2021. http://www.theses.fr/2015BESA2014.

MLA Handbook (7^th Edition):

Benlamine, Raouf. “Etude et réalisation d'une machine électrique à forte densité de couple et fort rapport de sur-couple pour des applications de traction automobile : Study and realization of an electric machine with high torque density and high transient torque capability for automotive applications.” 2015. Web. 01 Mar 2021.

Vancouver:

Benlamine R. Etude et réalisation d'une machine électrique à forte densité de couple et fort rapport de sur-couple pour des applications de traction automobile : Study and realization of an electric machine with high torque density and high transient torque capability for automotive applications. [Internet] [Doctoral dissertation]. Besançon; 2015. [cited 2021 Mar 01]. Available from: http://www.theses.fr/2015BESA2014.

Council of Science Editors:

Benlamine R. Etude et réalisation d'une machine électrique à forte densité de couple et fort rapport de sur-couple pour des applications de traction automobile : Study and realization of an electric machine with high torque density and high transient torque capability for automotive applications. [Doctoral Dissertation]. Besançon; 2015. Available from: http://www.theses.fr/2015BESA2014

Université de Sherbrooke

24. Shah Mohammadi, Ahmad. Design Optimization of Hybrid Excitation Synchronous Motor for Electric Vehicles with Enhanced Performance: Optimisation de la Conception du Moteur Synchrone à Excitation Hybride pour Véhicules Électriques à Haut Performance.

Degree: 2020, Université de Sherbrooke

URL: http://hdl.handle.net/11143/16805

► Depuis 1970, les préoccupations de l’humanité envers les changements climatiques ont poussé les chercheurs à faire des études approfondies pour optimiser les machines électriques pour… (more)

▼ Depuis 1970, les préoccupations de l’humanité envers les changements climatiques ont poussé les chercheurs à faire des études approfondies pour optimiser les machines électriques pour avoir des véhicules électriques plus performants et moins énergivores. La conception optimale de véhicules électriques (EV) peut contribuer pour un marché automobile plus exigeant et jouer un rôle principal pour le futur du transport durable des biens et des personnes. Les machines électriques se trouvent au cœur de la conversion d'énergie électromécanique, qui ont suscité beaucoup d'intérêts et d’efforts pour augmenter leur rendement et réduire leur coût. Cette thèse propose une méthodologie et une mise en œuvre pour minimiser le coût et maximiser l’efficacité d’une machine synchrone à excitation hybride (HESM) pour un véhicule donné et un cycle de conduite sélectionné. L'hybridation du système d’excitation peut combiner les qualités favorables comme un couple élevé à basse vitesse avec une capacité de surcharge supérieure, un défluxage exceptionnelle et une plage de vitesse prolongée de puissance constante (CPSR), une efficacité élevée et une contrôlabilité flexible dans les modes de traction et de freinage régénératif. Avec la technologie HESM, nous pouvons également passer des aimants de terres rares aux aimants en ferrite bon marché, et garantir l’approvisionnement pour l’industrie automobile. Le HESM conçu dans ce travail répond à trois exigences du véhicule : la vitesse de croisière maximale, le temps d’accélération et la capacité de monter une pente, avec un surdimensionnement minimal ou nulle de la chaîne de traction. Une optimisation multiniveau avec une interaction entre la vision composant et la vision système est proposée et validée. L’optimisation au niveau du composant est développée sur la base de l’algorithme génétique de tri non dominé (NSGA-II). Une nouvelle formulation pour les fonctions objectives est proposée pour l’optimisation simultanée de la conception de la machine et de la minimisation de son coût. Après avoir optimisés onze HESM au niveau du composant, pour maximiser l’efficacité, une optimisation au niveau du système est réalisée pour trouver le HESM optimal avec le plus haut rendement global sur le cycle de conduite donné. Une validation de la conception finale de la HESM présente un meilleur rendement global sur le cycle de conduite de 18,65% en relation à une machine synchrone à excitation séparée équivalente et 15,8% en relation à une à aiment permanent. En raison de la direction 3D du flux magnétique dans la topologie HESM sélectionnée, l’analyse par éléments finis (FEA) prenait beaucoup de temps et de ressources computationnelles. Afin d’évaluer les fonctions objectives lors de l’optimisation, un nouveau modèle a été développé basé sur un réseau de circuits magnétiques équivalents 3D (MEC). Ce modèle prédit bien la non-linéarité des matériaux magnétiques, par rapport aux simulations FEA. Enfin, le HESM optimisé final est évalué grâce à la technique FEA. Advisors/Committee Members: Fernandes Trovao, Joao Pedro (advisor).

Subjects/Keywords: Constant Power Speed Range (CPSR); Design Methodology; Electric Vehicle (EV); Finite Element Analysis (FEA); Global Efficiency,; Hybrid Excitation Synchronous Motor (HESM); Hybridization Ratio (HR); Magnetic Equivalent Circuit; Non-dominated Sorting Genetic Algorithm II (NSGA-II); Optimization; Plage de vitesse de puissance constant; méthodologie de conception véhicule électrique; Analyse par éléments finis (FEA); Algorithme génétique de tri non dominé; Vitesse prolongée de puissance constante (CPSR); Circuits magnétiques équivalents

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Shah Mohammadi, A. (2020). Design Optimization of Hybrid Excitation Synchronous Motor for Electric Vehicles with Enhanced Performance: Optimisation de la Conception du Moteur Synchrone à Excitation Hybride pour Véhicules Électriques à Haut Performance. (Doctoral Dissertation). Université de Sherbrooke. Retrieved from http://hdl.handle.net/11143/16805

Chicago Manual of Style (16^th Edition):

Shah Mohammadi, Ahmad. “Design Optimization of Hybrid Excitation Synchronous Motor for Electric Vehicles with Enhanced Performance: Optimisation de la Conception du Moteur Synchrone à Excitation Hybride pour Véhicules Électriques à Haut Performance.” 2020. Doctoral Dissertation, Université de Sherbrooke. Accessed March 01, 2021. http://hdl.handle.net/11143/16805.

MLA Handbook (7^th Edition):

Shah Mohammadi, Ahmad. “Design Optimization of Hybrid Excitation Synchronous Motor for Electric Vehicles with Enhanced Performance: Optimisation de la Conception du Moteur Synchrone à Excitation Hybride pour Véhicules Électriques à Haut Performance.” 2020. Web. 01 Mar 2021.

Vancouver:

Shah Mohammadi A. Design Optimization of Hybrid Excitation Synchronous Motor for Electric Vehicles with Enhanced Performance: Optimisation de la Conception du Moteur Synchrone à Excitation Hybride pour Véhicules Électriques à Haut Performance. [Internet] [Doctoral dissertation]. Université de Sherbrooke; 2020. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/11143/16805.

Council of Science Editors:

Shah Mohammadi A. Design Optimization of Hybrid Excitation Synchronous Motor for Electric Vehicles with Enhanced Performance: Optimisation de la Conception du Moteur Synchrone à Excitation Hybride pour Véhicules Électriques à Haut Performance. [Doctoral Dissertation]. Université de Sherbrooke; 2020. Available from: http://hdl.handle.net/11143/16805

The Ohio State University

25. Mumcu, Gokhan. EM Characterization of Magnetic Photonic / Degenerate Band Edge Crystals and Related Antenna Realizations.

Degree: PhD, Electrical and Computer Engineering, 2008, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1221860344

► Extraordinary properties found in engineered metamaterials have drawn great interest as they can address industry demands for small, light-weight, and multifunctional devices. It is… (more)

▼ Extraordinary properties found in engineered metamaterials have drawn great interest as they can address industry demands for small, light-weight, and multifunctional devices. It is not therefore surprising that a variety of artificial materials are being widely considered for various radio frequency (RF) applications. Among these metamaterials, a recently introduced class of anisotropic photonic crystals, namely magnetic photonic (MPC) and degenerate band edge (DBE) crystals, has been shown to exhibit unique propagation modes as compared to regular periodic assemblies. For the first time, this dissertation carries out computational and experimental analysis of these new crystals for specific RF applications. Our ultimate goal is to develop high gain antenna apertures and miniature footprint antennas. In this context, this dissertation begins by establishing an understanding of the fundamental electromagnetic properties of 1D DBE and MPC crystals using the transfer matrix and spectral domain method of moments (MoM) computations. This is followed by numerical characterization of 3D DBE crystals via surface integral equations. Upon successful demonstration of the DBE mode for improved antenna performance, a measurement setup is presented to characterize low loss uniaxial materials. Subsequently, Specifically, a finite DBE assembly is built and shown to exhibit large aperture efficiency for conformal high gain antenna applications. The second half of the dissertation introduces a novel coupled transmission line concept capable of emulating DBE mode on otherwise uniform microwave substrates. Using this novel dual transmission line concept, we present examples of several small antennas on low and high contrast substrates, and fabricate a prototype to experimentally verify the printed slow wave concepts. The measured DBE antenna is shown to perform better than other recently published metamaterial antennas. It is therefore very attractive for several RF applications requiring small and efficient antennas (such as RF identification (RFID) tags or mobile communications). The last chapter presents a lumped circuit DBE model and suggest improvement to existing DBE antennas by introducing lumped elements into the transmission lines. Advisors/Committee Members: Volakis, John (Advisor).

Subjects/Keywords: Electrical Engineering; Electromagnetism; magnetic photonic crystals; MPC; degenerate band edge crystals; DBE; anisotropic media; metamaterials; printed antennas; miniature antennas; equivalent circuit model; surface integral equation; SIE; uniaxial medium; dyadic Green's function

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mumcu, G. (2008). EM Characterization of Magnetic Photonic / Degenerate Band Edge Crystals and Related Antenna Realizations. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1221860344

Chicago Manual of Style (16^th Edition):

Mumcu, Gokhan. “EM Characterization of Magnetic Photonic / Degenerate Band Edge Crystals and Related Antenna Realizations.” 2008. Doctoral Dissertation, The Ohio State University. Accessed March 01, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1221860344.

MLA Handbook (7^th Edition):

Mumcu, Gokhan. “EM Characterization of Magnetic Photonic / Degenerate Band Edge Crystals and Related Antenna Realizations.” 2008. Web. 01 Mar 2021.

Vancouver:

Mumcu G. EM Characterization of Magnetic Photonic / Degenerate Band Edge Crystals and Related Antenna Realizations. [Internet] [Doctoral dissertation]. The Ohio State University; 2008. [cited 2021 Mar 01]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1221860344.

Council of Science Editors:

Mumcu G. EM Characterization of Magnetic Photonic / Degenerate Band Edge Crystals and Related Antenna Realizations. [Doctoral Dissertation]. The Ohio State University; 2008. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1221860344

Open Access Theses and Dissertations