subject:(Electromagnetic relay)

Louisiana State University

1. Williams, John Dalton. Design and fabrication of electromagnetic micro-relays using the UV-LIGA technique.

Degree: PhD, Engineering Science and Materials, 2004, Louisiana State University

URL: etd-04152004-101850 ; https://digitalcommons.lsu.edu/gradschool_dissertations/970

► This dissertation reports a research effort to microfabricate an electromagnetic relay for power applications using a multilayer UV-LIGA process. A mechanically wrapped coil was used… (more)

▼ This dissertation reports a research effort to microfabricate an electromagnetic relay for power applications using a multilayer UV-LIGA process. A mechanically wrapped coil was used and very simple design for the magnetic circuit was adopted to increase the design flexibility and performances. The broad material selection and the capability of making high aspect ratio microstructures of the UV-LIGA make the technology best suited for fabricating microelectromechanical power relays. Fabrication of the device required significant advances in the optical lithography of SU-8 negative photoresist. Research proved that aspect-ratios up to 40:1 in isolated open field structures of thickness between 1 and 1.5 mm can be obtained a standard broadband UV source. The principal factor in this achievement is the reduction of internal stress during the post-exposure bake process that eliminates large plastic deformations present during standard bake procedures. Another challenging issue associated with producing high aspect ratio microstructures is the development narrow groves and deep holes in SU-8 lithography. To overcome this obstacle, megasonic agitation was applied to the developer bath, which resulted in faster development rates, more uniform development, and the ability to produce structures with higher aspect ratios. To date, this process has been used to achieve 100:1 aspect ratio open field features and 45:1 intact cylinder arrays. A multi-layer SU-8 optical lithography and metal electrodeposition process was developed to fabricate the relay. The design required implementation of high aspect ratio lithographic processing techniques to produce a tall nickel magnetic core and insulated magnetic cup in which a pre-wrapped solenoid would be placed for electromagnetic driving. After insertion of the solenoid a Ni-Fe actuator was bonded to the relay base to complete the device. To better understand the fatigue life of electroplated microstructures, a theoretical model was developed determine the possible fracture mechanics properties and fatigue life of LIGA fabricated nickel and nickel-iron alloys for use in microsystems applications. The prototype micro-relays were tested for the dynamic characteristics and power capacity. The experimental results have confirmed that reasonably large current capacity and fast response speed can be achieved using electromagnetic actuation and the multi-layer UV-LIGA fabrication process developed.

Subjects/Keywords: MEMS; fracture mechanics; UV-LIGA; power relay; SU-8; electromagnetic relay

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APA (6^th Edition):

Williams, J. D. (2004). Design and fabrication of electromagnetic micro-relays using the UV-LIGA technique. (Doctoral Dissertation). Louisiana State University. Retrieved from etd-04152004-101850 ; https://digitalcommons.lsu.edu/gradschool_dissertations/970

Chicago Manual of Style (16^th Edition):

Williams, John Dalton. “Design and fabrication of electromagnetic micro-relays using the UV-LIGA technique.” 2004. Doctoral Dissertation, Louisiana State University. Accessed January 22, 2021. etd-04152004-101850 ; https://digitalcommons.lsu.edu/gradschool_dissertations/970.

MLA Handbook (7^th Edition):

Williams, John Dalton. “Design and fabrication of electromagnetic micro-relays using the UV-LIGA technique.” 2004. Web. 22 Jan 2021.

Vancouver:

Williams JD. Design and fabrication of electromagnetic micro-relays using the UV-LIGA technique. [Internet] [Doctoral dissertation]. Louisiana State University; 2004. [cited 2021 Jan 22]. Available from: etd-04152004-101850 ; https://digitalcommons.lsu.edu/gradschool_dissertations/970.

Council of Science Editors:

Williams JD. Design and fabrication of electromagnetic micro-relays using the UV-LIGA technique. [Doctoral Dissertation]. Louisiana State University; 2004. Available from: etd-04152004-101850 ; https://digitalcommons.lsu.edu/gradschool_dissertations/970

University of Saskatchewan

2. Aquiles Perez, Sandro Gianny. Modeling relays for power system protection studies.

Degree: 2006, University of Saskatchewan

URL: http://hdl.handle.net/10388/etd-07132006-133747

► Numerical relays are the result of the application of microprocessor technology in relay industry. Numerical relays have the ability to communicate with its peers, are… (more)

▼ Numerical relays are the result of the application of microprocessor technology in relay industry. Numerical relays have the ability to communicate with its peers, are economical and are easy to operate, adjust and repair. Modeling of digital and numerical relays is important to adjust and settle protection equipment in electrical facilities and to train protection personnel. Designing of numerical relays is employed to produce new prototypes and protection algorithms. Computer models of numerical relays for the study of protection systems are greatly enhanced when working along with an electromagnetic transient program (emtp). A literature survey has revealed that previous modeling techniques presented a lack of automation in the generation of relay models, or show high complexity in linking the numerical relay models with the power system modeled in the emtp. This thesis describes a new approach of modeling and designing of numerical relays. The proposed methodology employs a Visual C++-based program (PLSA) to obtain from the user the specifications of the relay to be designed, and to process this information to generate the FORTRAN code that represents the functional blocks of the relay. This generated code is incorporated in a PSCAD/EMTDC case using a resource called component, which facilitates the creation of user-custom models in PSCAD/EMTDC. Convenient electrical and logical signals are connected to the inputs and outputs of the PSCAD/EMTDC component. Further additions of digital relay models into the PSCAD/EMTDC case constitute the protection system model. The thesis describes a procedure for designing distance and differential relay models, but the methodology may be extended to design models of other relay elements. A number of protection system studies were performed with the structure created with the proposed methodology. Adjustment of distance and differential relays were studied. Relay performance under CT saturation and the effects of the removal of anti-aliasing analog filter were investigated. Local and remote backup distance protection of transmission lines was simulated. The adjustment of differential protection of power transformer to overcome the effects of inrush current was performed. Power transformer differential protection responses to internal and external faults were considered. Additionally, a set of tests were performed to investigate the consistency of the relay models generated with the proposed methodology. The results showed that the numerical relay models respond satisfactorily according with the expected results of the tests. Advisors/Committee Members: Sidhu, Tarlochan S., Sachdev, Mohinder S., Nguyen, Ha H., Meda, Venkatesh, Karki, Rajesh, Faried, Sherif O., Varma, Rajiv.

Subjects/Keywords: Electromagnetic transient program; Distance relays; Differential relays; Relay models

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APA (6^th Edition):

Aquiles Perez, S. G. (2006). Modeling relays for power system protection studies. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/etd-07132006-133747

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):

Aquiles Perez, Sandro Gianny. “Modeling relays for power system protection studies.” 2006. Thesis, University of Saskatchewan. Accessed January 22, 2021. http://hdl.handle.net/10388/etd-07132006-133747.

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

MLA Handbook (7^th Edition):

Aquiles Perez, Sandro Gianny. “Modeling relays for power system protection studies.” 2006. Web. 22 Jan 2021.

Vancouver:

Aquiles Perez SG. Modeling relays for power system protection studies. [Internet] [Thesis]. University of Saskatchewan; 2006. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/10388/etd-07132006-133747.

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

Council of Science Editors:

Aquiles Perez SG. Modeling relays for power system protection studies. [Thesis]. University of Saskatchewan; 2006. Available from: http://hdl.handle.net/10388/etd-07132006-133747

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

Brno University of Technology

3. Solnický, Vojtěch. Doplňující sensorika pro nestabilní balancující vozidlo: Auxiliary sensorics for unstable balancing vehicle.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/13251

► This thesis continues on successful project of unstable balancing vehicle, which was completed in mechatronics laboratory in last year. The main goal is to supplement… (more)

Subjects/Keywords: Nestabilní vozidlo; displej; Multimedia Expansion Board; tenzometr; elektromagnetické relé; enkodér; baterie; SD karta; Unstable vehicle; display device; Multimedia Expansion Board; strain gauge; electromagnetic relay; encoder; battery; SD card

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APA (6^th Edition):

Solnický, V. (2019). Doplňující sensorika pro nestabilní balancující vozidlo: Auxiliary sensorics for unstable balancing vehicle. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/13251

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):

Solnický, Vojtěch. “Doplňující sensorika pro nestabilní balancující vozidlo: Auxiliary sensorics for unstable balancing vehicle.” 2019. Thesis, Brno University of Technology. Accessed January 22, 2021. http://hdl.handle.net/11012/13251.

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

MLA Handbook (7^th Edition):

Solnický, Vojtěch. “Doplňující sensorika pro nestabilní balancující vozidlo: Auxiliary sensorics for unstable balancing vehicle.” 2019. Web. 22 Jan 2021.

Vancouver:

Solnický V. Doplňující sensorika pro nestabilní balancující vozidlo: Auxiliary sensorics for unstable balancing vehicle. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/11012/13251.

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

Council of Science Editors:

Solnický V. Doplňující sensorika pro nestabilní balancující vozidlo: Auxiliary sensorics for unstable balancing vehicle. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/13251

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

4. Messal, Oualid. Caractérisation et modélisation du comportement thermomagnétique d'alliages FeNi pour le prototypage virtuel : Characterization and modeling of the thermomagnetic behavior of FeNi alloys for virtual prototyping.

Degree: Docteur es, Génie électrique, 2013, Université Claude Bernard – Lyon I

URL: http://www.theses.fr/2013LYO10304

►

L’avènement du Génie électrique, il y a plus d’un siècle maintenant, s’est accompagné dès ses débuts, de recherche de matériaux ferromagnétiques performants pour la réalisation… (more)

▼

L’avènement du Génie électrique, il y a plus d’un siècle maintenant, s’est accompagné dès ses débuts, de recherche de matériaux ferromagnétiques performants pour la réalisation de l’élément central des dispositifs électromagnétiques, le circuit ou noyau magnétique. Ces matériaux, constitués initialement de fer, ont été très vite alliés au silicium, au cobalt et au nickel pour plusd’efficacité énergétique. Pour un dispositif donné, le choix d’un tel ou tel matériau passe souvent par un exercice de compromis vis-à-vis des besoins applicatifs (performances magnétiques, caractéristiques mécaniques et thermiques, etc., et bien sûr coût). La fréquence et la température de fonctionnement sont entre autres des paramètres importants. Parmi ces matériaux, les FeNi, bien qu’ils soient matures industriellement, voient toujours de nouveaux marchés s’ouvrirent à eux année après année grâce à l’attrait technique qu’ils exercent. Ce travail s'inscrit dans la continuité des recherches engagées à AMPERE sur les modèles comportementaux de matériaux magnétiques avec prise en compte des effets de la température. En effet, la recherche permanente de performances et de compacité ou intégration pour tous les dispositifs électromagnétiques soumet les circuits magnétiques à des contraintes physiques et en particulier thermiques de plus en plus sévères. Il est donc nécessaire de caractériser et modéliserprécisément les matériaux ferromagnétiques, et plus particulièrement les alliages FeNi, afin de les intégrer dans les outils de conception et d’optimisation de ces dispositifs. Pour cela, nous avons notamment dû mettre en oeuvre un dispositif expérimental adapté, et réaliser de nombreuses et longues expérimentations afin d’élaborer des modèles performants de comportement de ces matériaux. Ces modèles étudiés ou/et développés ont été ensuite testés sur une démonstrateur réel. Dans le cadre de cette thèse qui s’est déroulée en collaboration avec le Centre de Recherche du groupe APERAM, nous avons choisi une application particulièrement sensible en matière de sécurité des personnes « le système de protection différentielle » où le circuit magnétique (en alliage Fe–50%Ni ou Supra50) constitue une part très importante des performances et de la fiabilité. Enfin, de nouveaux alliages FeNi(Cr, Cu) à faible teneur en Ni (donc économiques) issus du Centre de Recherche d’APERAM ont été étudiés en vue de tester leur aptitude à remplacer le Supra50 dans ces systèmes. Le but est au final de proposer des alliages FeNi économiques aptesà la fabrication du circuit magnétique des relais de disjoncteurs différentiels à propre courant.

The advent of Electrical Engineering has been accompanied since its beginning, by the research of high performance ferromagnetic materials for the realization of the central element of electromagnetic devices, the magnetic core/circuit. These materials initially consisting of iron were alloyed with silicon, cobalt and nickel for more energy efficiency. For a given device, the material must be designed to meet the requirements of…

Advisors/Committee Members: Burais, Noël (thesis director), Morel, Laurent (thesis director), Sixdenier, Fabien (thesis director).

Subjects/Keywords: Ferromagnétisme; Alliages FeNi; Hystérésis Statique; Hystérésis Dynamique; Point de Curie; Dispositifs électromagnétiques; Relais haute sensibilité; Ferromagnetism; FeNi FCC alloys; Static hysteresis; Dynamic hysteresis; Curie point; Electromagnetic devices; High sensitivity relay; 621.34

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

APA (6^th Edition):

Messal, O. (2013). Caractérisation et modélisation du comportement thermomagnétique d'alliages FeNi pour le prototypage virtuel : Characterization and modeling of the thermomagnetic behavior of FeNi alloys for virtual prototyping. (Doctoral Dissertation). Université Claude Bernard – Lyon I. Retrieved from http://www.theses.fr/2013LYO10304

Chicago Manual of Style (16^th Edition):

Messal, Oualid. “Caractérisation et modélisation du comportement thermomagnétique d'alliages FeNi pour le prototypage virtuel : Characterization and modeling of the thermomagnetic behavior of FeNi alloys for virtual prototyping.” 2013. Doctoral Dissertation, Université Claude Bernard – Lyon I. Accessed January 22, 2021. http://www.theses.fr/2013LYO10304.

MLA Handbook (7^th Edition):

Messal, Oualid. “Caractérisation et modélisation du comportement thermomagnétique d'alliages FeNi pour le prototypage virtuel : Characterization and modeling of the thermomagnetic behavior of FeNi alloys for virtual prototyping.” 2013. Web. 22 Jan 2021.

Vancouver:

Messal O. Caractérisation et modélisation du comportement thermomagnétique d'alliages FeNi pour le prototypage virtuel : Characterization and modeling of the thermomagnetic behavior of FeNi alloys for virtual prototyping. [Internet] [Doctoral dissertation]. Université Claude Bernard – Lyon I; 2013. [cited 2021 Jan 22]. Available from: http://www.theses.fr/2013LYO10304.

Council of Science Editors:

Messal O. Caractérisation et modélisation du comportement thermomagnétique d'alliages FeNi pour le prototypage virtuel : Characterization and modeling of the thermomagnetic behavior of FeNi alloys for virtual prototyping. [Doctoral Dissertation]. Université Claude Bernard – Lyon I; 2013. Available from: http://www.theses.fr/2013LYO10304

Brno University of Technology

5. Feilhauer, Petr. Modul reléových výstupů elektronického tachografu: Relay output module for electronic tachograph.

Degree: 2018, Brno University of Technology

URL: http://hdl.handle.net/11012/14922

► This bachelor thesis contains detailed description of function and wiring current Electronic tachograph RE1xx from company UniControls-Tramex. For comparison there is mentioned description of competitor’s… (more)

Subjects/Keywords: Adresovací multiplexor; Antiparalelní ochranná dioda; ATmega64; Drážní vozidlo; Elektromagnetické relé; Elektronický rychloměr; EMC; Filtrovací kondenzátory; Galvanické oddělení; Hardwarový watchdog; ISP (SPI); Jednotka elektroniky; JTAG; Klidový stav linky; Klopný obvod typu D; Komunikační a indikační jednotka; Koncepce vývoje; Mikrokontroler; Modul reléových výstupů; Ochranný transil; Ovládací cívka; Polovodičové relé; Přepínací kanál; Pull-up rezistor; Reléový výstup; Řídicí obvod; RS485; Rychlostní radar Sériová datová komunikace; Spínací kanál; Sériové programování; Testovací software; Addressing multiplexer; Anti-parallel protective diode; ATmega64; Communication and indicative unit; Conception of development; Control circuit; Control coil; D-type flip-flop; Electromagnetic relay; Electronic tachograph; EMC; Filtering capacitors; Galvanic separation; Hardware watchdog; ISP (SPI); JTAG; Microcontroller; Module of relay outputs; Protective transil; Pull-up resistors; Relay output; Release condition of line; RS485; Serial data communication; Serial programming; Solid state relay; Speed radar; Switch-over channel; Switching channel; Unit of electronics; Testing software; Train vehicle

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

APA (6^th Edition):

Feilhauer, P. (2018). Modul reléových výstupů elektronického tachografu: Relay output module for electronic tachograph. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/14922

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):

Feilhauer, Petr. “Modul reléových výstupů elektronického tachografu: Relay output module for electronic tachograph.” 2018. Thesis, Brno University of Technology. Accessed January 22, 2021. http://hdl.handle.net/11012/14922.

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

MLA Handbook (7^th Edition):

Feilhauer, Petr. “Modul reléových výstupů elektronického tachografu: Relay output module for electronic tachograph.” 2018. Web. 22 Jan 2021.

Vancouver:

Feilhauer P. Modul reléových výstupů elektronického tachografu: Relay output module for electronic tachograph. [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/11012/14922.

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

Council of Science Editors:

Feilhauer P. Modul reléových výstupů elektronického tachografu: Relay output module for electronic tachograph. [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/14922

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

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