subject:(Flywheel)

University of Saskatchewan

1. Odeleye, Oluwadamilola Olasunkanmi. A Comparative Study on the Effects of Eccentric Flywheel Overload and Traditional Resistance Training on the Physiological/Functional Performance in Healthy Older Adults.

Degree: 2020, University of Saskatchewan

URL: http://hdl.handle.net/10388/12773

► Introduction: Older adults experience certain deleterious effects associated with aging among which include; declines in muscle strength, muscle mass, motor unit activation, muscle power and… (more)

▼ Introduction: Older adults experience certain deleterious effects associated with aging among which include; declines in muscle strength, muscle mass, motor unit activation, muscle power and functional performance. Two strength training methods (Traditional resistance training and Eccentric flywheel overload training) have been suggested as effective means of combating these age-related declines and are of interest to us in this study. Limited research exists however, ascertaining the superiority of either training method. Purpose: This research sought to compare the effects of eccentric flywheel overload training and traditional resistance training on muscle strength, muscle thickness, body composition (lean/fat mass) and functional performance in healthy older adults Methods: For inclusion, individuals had to be older adults aged 55 and above, healthy, active and untrained. Twenty-three participants were randomly assigned to one of two groups: the Eccentric Flywheel Overload Training group (EFOT) or the Traditional Resistance Training Group (TRT). Measurements included muscle strength, muscle thickness, body composition (lean and body mass) and functional performance (30s sit to stand, incremental shuttle walk test, functional reach test, and up and down stair climb power test) assessed pre/post. Results: Both training programs resulted in increases in isometric peak torque (p < .001), eccentric peak torque (p < .001), 4 repetition maximum back squat (p < .001), 4 repetition maximum bench press (p < .001) and 4 repetition maximum deadlift (p < .001) over time. There were also similar increases over time in lean mass (p < .001), 30s sit to stand (p < .001) and up and down stair climb power (p = .04) tests. Similar decreases in fat mass (p < .001) were also reported in both groups. No significant differences were found over time in both groups on muscle thickness, functional reach and incremental shuttle walk. Our study revealed there were no significant differences between groups over time. Conclusion: The present study indicates that both EFOT and TRT are similarly effective for improving isometric, and eccentric muscle strength, 4RM squat, bench press and deadlift, body composition (lean/fat mass), and functional performance (30s sit to stand and up and down stair climb power) in healthy older adults. Advisors/Committee Members: Butcher, Scotty, Blackburn, Dave, Chilibeck, Phil, Arnold, Cathy, Kim, Soo.

Subjects/Keywords: Eccentric Flywheel

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APA (6^th Edition):

Odeleye, O. O. (2020). A Comparative Study on the Effects of Eccentric Flywheel Overload and Traditional Resistance Training on the Physiological/Functional Performance in Healthy Older Adults. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/12773

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):

Odeleye, Oluwadamilola Olasunkanmi. “A Comparative Study on the Effects of Eccentric Flywheel Overload and Traditional Resistance Training on the Physiological/Functional Performance in Healthy Older Adults.” 2020. Thesis, University of Saskatchewan. Accessed January 18, 2021. http://hdl.handle.net/10388/12773.

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

MLA Handbook (7^th Edition):

Odeleye, Oluwadamilola Olasunkanmi. “A Comparative Study on the Effects of Eccentric Flywheel Overload and Traditional Resistance Training on the Physiological/Functional Performance in Healthy Older Adults.” 2020. Web. 18 Jan 2021.

Vancouver:

Odeleye OO. A Comparative Study on the Effects of Eccentric Flywheel Overload and Traditional Resistance Training on the Physiological/Functional Performance in Healthy Older Adults. [Internet] [Thesis]. University of Saskatchewan; 2020. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/10388/12773.

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

Council of Science Editors:

Odeleye OO. A Comparative Study on the Effects of Eccentric Flywheel Overload and Traditional Resistance Training on the Physiological/Functional Performance in Healthy Older Adults. [Thesis]. University of Saskatchewan; 2020. Available from: http://hdl.handle.net/10388/12773

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

University of Alberta

2. Jiang, Ming. Design of a Permanent Magnet Synchronous Machine for a Flywheel Energy Storage System within a Hybrid Electric Vehicle.

Degree: MS, Department of Electrical and Computer Engineering, 2010, University of Alberta

URL: https://era.library.ualberta.ca/files/4b29b7640

► As an energy storage device, the flywheel has significant advantages over conventional chemical batteries, including higher energy density, higher efficiency, longer life time, and less… (more)

Subjects/Keywords: Flywheel; Magnet; Machine; Permanent; Synchronous

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APA (6^th Edition):

Jiang, M. (2010). Design of a Permanent Magnet Synchronous Machine for a Flywheel Energy Storage System within a Hybrid Electric Vehicle. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/4b29b7640

Chicago Manual of Style (16^th Edition):

Jiang, Ming. “Design of a Permanent Magnet Synchronous Machine for a Flywheel Energy Storage System within a Hybrid Electric Vehicle.” 2010. Masters Thesis, University of Alberta. Accessed January 18, 2021. https://era.library.ualberta.ca/files/4b29b7640.

MLA Handbook (7^th Edition):

Jiang, Ming. “Design of a Permanent Magnet Synchronous Machine for a Flywheel Energy Storage System within a Hybrid Electric Vehicle.” 2010. Web. 18 Jan 2021.

Vancouver:

Jiang M. Design of a Permanent Magnet Synchronous Machine for a Flywheel Energy Storage System within a Hybrid Electric Vehicle. [Internet] [Masters thesis]. University of Alberta; 2010. [cited 2021 Jan 18]. Available from: https://era.library.ualberta.ca/files/4b29b7640.

Council of Science Editors:

Jiang M. Design of a Permanent Magnet Synchronous Machine for a Flywheel Energy Storage System within a Hybrid Electric Vehicle. [Masters Thesis]. University of Alberta; 2010. Available from: https://era.library.ualberta.ca/files/4b29b7640

University of California – Santa Cruz

3. Naud, Paul S. Smoothing the Eects of Renewable Generation on the Distribution Grid.

Degree: Electrical Engineering, 2014, University of California – Santa Cruz

URL: http://www.escholarship.org/uc/item/3nr053m8

► Renewable electrical power sources offer a clean form of energy that is essential for the future. In areas with "good" sun exposure (insolation), like Santa… (more)

Subjects/Keywords: Electrical engineering; Energy Storage; Flywheel; Renewable Smoothing

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APA (6^th Edition):

Naud, P. S. (2014). Smoothing the Eects of Renewable Generation on the Distribution Grid. (Thesis). University of California – Santa Cruz. Retrieved from http://www.escholarship.org/uc/item/3nr053m8

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):

Naud, Paul S. “Smoothing the Eects of Renewable Generation on the Distribution Grid.” 2014. Thesis, University of California – Santa Cruz. Accessed January 18, 2021. http://www.escholarship.org/uc/item/3nr053m8.

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

MLA Handbook (7^th Edition):

Naud, Paul S. “Smoothing the Eects of Renewable Generation on the Distribution Grid.” 2014. Web. 18 Jan 2021.

Vancouver:

Naud PS. Smoothing the Eects of Renewable Generation on the Distribution Grid. [Internet] [Thesis]. University of California – Santa Cruz; 2014. [cited 2021 Jan 18]. Available from: http://www.escholarship.org/uc/item/3nr053m8.

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

Council of Science Editors:

Naud PS. Smoothing the Eects of Renewable Generation on the Distribution Grid. [Thesis]. University of California – Santa Cruz; 2014. Available from: http://www.escholarship.org/uc/item/3nr053m8

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

Rochester Institute of Technology

4. Douglas, Matthew Robert. Dynamics of a Kinetic Energy Storage Device for a Translating Hydrokinetic System.

Degree: MS, Mechanical Engineering, 2014, Rochester Institute of Technology

URL: https://scholarworks.rit.edu/theses/8562

► Current hydropower is sourced predominately from dams, which have several ecological and societal issues. Despite growing demand for energy, dam construction has recently been… (more)

▼ Current hydropower is sourced predominately from dams, which have several ecological and societal issues. Despite growing demand for energy, dam construction has recently been at a standstill. Hydrokinetic systems are new methods of harvesting renewable energy from rivers without requiring dams. Hydrokites, a subset of hydrokinetic systems, use a translating hydrofoil to generate electricity. Previous models of hydrokite systems have been promising, but their performance in experimental settings has not been as expected. One possible cause for this discrepancy is a loss in system energy when the hydrofoil reaches the end of its stroke, resulting in significantly less power generation. This thesis proposes an alternative hydrokite model that incorporates a flywheel to store kinetic energy during the cycle. A numerical simulation was created that calculates the average cycle power for a flywheel hydrokite system for given system parameters. The dynamics of this system were studied by optimizing various system parameters to maximize average cycle power. The optimization routine found that 278.1 W of power could be produced in a river flow of 1 m/s for the flywheel hydrofoil model. In order to determine how the flywheel affects the system, the optimized hydrokite with a flywheel was compared to an optimized version of the previous hydrokite without a flywheel. The previous optimized model produced an average cycle power of 24.91 W, which shows the flywheel was able to improve the performance of the system by over 1100%. The parameters found from the optimization schemes are only expected to be optimal for instantaneous hydrofoil flips; therefore, in order to characterize how the hydrofoil flip affects the system, the simulation was modified by setting the hydrofoil angle to 0 degrees for the duration of the flip time. The system was optimized again for various flip times. The simulation predicts that less power will be generated for increasing flip times until a flip time of 0.45 seconds is reached where the system cannot produce any power. Experimental testing on a small-scale system was performed to determine how much electrical energy is required to flip a hydrofoil for various flip times and submerged depth. All hydrofoil flips required less than 1 J, a small fraction of the predicted total cycle energy generated. Advisors/Committee Members: Mario W. Gomes.

Subjects/Keywords: Flywheel; Hydrokinetic; Hydrokite; Hydropower; Optimization; Renewable

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APA (6^th Edition):

Douglas, M. R. (2014). Dynamics of a Kinetic Energy Storage Device for a Translating Hydrokinetic System. (Masters Thesis). Rochester Institute of Technology. Retrieved from https://scholarworks.rit.edu/theses/8562

Chicago Manual of Style (16^th Edition):

Douglas, Matthew Robert. “Dynamics of a Kinetic Energy Storage Device for a Translating Hydrokinetic System.” 2014. Masters Thesis, Rochester Institute of Technology. Accessed January 18, 2021. https://scholarworks.rit.edu/theses/8562.

MLA Handbook (7^th Edition):

Douglas, Matthew Robert. “Dynamics of a Kinetic Energy Storage Device for a Translating Hydrokinetic System.” 2014. Web. 18 Jan 2021.

Vancouver:

Douglas MR. Dynamics of a Kinetic Energy Storage Device for a Translating Hydrokinetic System. [Internet] [Masters thesis]. Rochester Institute of Technology; 2014. [cited 2021 Jan 18]. Available from: https://scholarworks.rit.edu/theses/8562.

Council of Science Editors:

Douglas MR. Dynamics of a Kinetic Energy Storage Device for a Translating Hydrokinetic System. [Masters Thesis]. Rochester Institute of Technology; 2014. Available from: https://scholarworks.rit.edu/theses/8562

Texas A&M University

5. Lewallen, Colby Foster. Novel Active Magnetic Bearing Control for a High-Speed Flywheel.

Degree: MS, Mechanical Engineering, 2016, Texas A&M University

URL: http://hdl.handle.net/1969.1/158082

► Flywheel energy storage (FES) systems have recently gained momentum in the energy storage industry as a viable alternative to conventional lithium-ion and lead-acid batteries because… (more)

▼ Flywheel energy storage (FES) systems have recently gained momentum in the energy storage industry as a viable alternative to conventional lithium-ion and lead-acid batteries because they have superior energy density, faster charge rates, lack harmful chemicals, and are easy to repair. Contemporary FES research is focused on increasing the maximum operating speed of the rotor and reducing the power consumed by the active magnetic bearings. Therefore, the objective of this research was to implement a novel nonlinear controller called ‘wavelet-based time-frequency control’ (WFXLMS) in a computer simulation of a FES system with five degrees-of-freedom and compare its dynamic stability and active power consumption with a proportional-integral-derivative (PID) and fuzzy-logic controller scheme. Specifically, all three controllers were applied to a FES system operating at a high rate of speed and the amplitude of vibration, rate of convergence, and current draw were compared. The results show that the ideal choice for a FES system is the WFXLMS controller. While it did draw the largest maximum current of any system, it used significantly less (half of PID and a quarter of fuzzy-logic’s) steady state current. This would drastically improve the energy storage duration; one of the main functions of a FES system. The WFXLMS controller is also the ideal system for higher operating speeds because of the system’s stability in the frequency domain. Comparing the average displacements shows that the WFXLMS controller had the largest average displacement (particularly in the z- axis), but the WFXLMS controller only used a fraction of the available clearance gap. If the FES system was used in an environment like space or a wind-farm where external excitations are limited, the WFXLMS controller is the clear choice. However, if external excitations are a real concern, the PID and fuzzy-logic controllers demonstrated a much quicker reaction time and would be the better choice. Advisors/Committee Members: Suh, Steve (advisor), Tai, Bruce (committee member), Wang, Jyhwen (committee member).

Subjects/Keywords: Nonlinear; wavelet; control; flywheel; energy; storage

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APA (6^th Edition):

Lewallen, C. F. (2016). Novel Active Magnetic Bearing Control for a High-Speed Flywheel. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/158082

Chicago Manual of Style (16^th Edition):

Lewallen, Colby Foster. “Novel Active Magnetic Bearing Control for a High-Speed Flywheel.” 2016. Masters Thesis, Texas A&M University. Accessed January 18, 2021. http://hdl.handle.net/1969.1/158082.

MLA Handbook (7^th Edition):

Lewallen, Colby Foster. “Novel Active Magnetic Bearing Control for a High-Speed Flywheel.” 2016. Web. 18 Jan 2021.

Vancouver:

Lewallen CF. Novel Active Magnetic Bearing Control for a High-Speed Flywheel. [Internet] [Masters thesis]. Texas A&M University; 2016. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/1969.1/158082.

Council of Science Editors:

Lewallen CF. Novel Active Magnetic Bearing Control for a High-Speed Flywheel. [Masters Thesis]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/158082

Texas A&M University

6. Zhang, Xiaohua. Vibration Isolation of a Locomotive Mounted Energy Storage Flywheel.

Degree: MS, Mechanical Engineering, 2011, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7528

► Utilizing flywheels to store and reuse energy from regenerative braking on locomotives is a new technology being developed in the Vibration Control and Electromechanics Lab… (more)

Subjects/Keywords: Vibration isolation; Locomotive; Energy storage flywheel

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APA (6^th Edition):

Zhang, X. (2011). Vibration Isolation of a Locomotive Mounted Energy Storage Flywheel. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7528

Chicago Manual of Style (16^th Edition):

Zhang, Xiaohua. “Vibration Isolation of a Locomotive Mounted Energy Storage Flywheel.” 2011. Masters Thesis, Texas A&M University. Accessed January 18, 2021. http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7528.

MLA Handbook (7^th Edition):

Zhang, Xiaohua. “Vibration Isolation of a Locomotive Mounted Energy Storage Flywheel.” 2011. Web. 18 Jan 2021.

Vancouver:

Zhang X. Vibration Isolation of a Locomotive Mounted Energy Storage Flywheel. [Internet] [Masters thesis]. Texas A&M University; 2011. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7528.

Council of Science Editors:

Zhang X. Vibration Isolation of a Locomotive Mounted Energy Storage Flywheel. [Masters Thesis]. Texas A&M University; 2011. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7528

7. Dias, Carlos Ribeiro. Dimensionamento de um sistema UPS flywheel.

Degree: 2013, Instituto Politécnico do Porto

URL: http://www.rcaap.pt/detail.jsp?id=oai:recipp.ipp.pt:10400.22/4676

► Nesta dissertação, numa primeira fase, é efetuado um estudo ao estado da arte da qualidade de energia elétrica e do volante de inércia mais conhecido… (more)

▼ Nesta dissertação, numa primeira fase, é efetuado um estudo ao estado da arte da qualidade de energia elétrica e do volante de inércia mais conhecido por flywheel. Como primeiro tópico da primeira fase é efetuado um estudo das perturbações possíveis, baseado na sua forma de onda, são representadas graficamente as diversas perturbações, é efetuada uma análise das possíveis causas para cada perturbação e por fim, também são apresentadas as possíveis soluções para as mesmas perturbações. Como possíveis soluções, são apresentados os vários sistemas de armazenamento nomeadamente, UPS (fonte de alimentação ininterrupta), volantes de inércia, entre outros sistemas. No segundo tópico é efetuada uma introdução ao sistema flywheel, apresentando alguns aspetos importantes, tais como as várias vantagens do seu uso como sistema de armazenamento de energia, diferentes tipos de aplicações, sua constituição (formas, tipos de matérias, máquina elétrica, entre outros) e são apresentados também os diferentes tipos de aplicações, utilizando‐a como sistema de armazenamento. A segunda fase é dedicada às equações fundamentais para o desenvolvimento duma flywheel. Neste caso são apresentadas várias equações para o cálculo da energia armazenada, momento de inércia, tensões, entre muitas outras equações essenciais. Na terceira fase é efetuada uma comparação entre diversos sistemas de armazenamento de energia, usando tanto a tecnologia flywheel como baterias tradicionais. Esta comparação foi realizada em três categorias, 150 kVA, 600 kVA e 1200 kVA. Em cada categoria é realizada uma comparação entre diversos fatores tais como: peso, custos, dimensões, limitações, regulações possíveis e questões ambientais. Como quarta fase, é apresentado um modelo de uma draga utilizando o sistema flywheel como armazenamento de energia. Neste modelo é apresentada a flywheel como solução, uma vez que armazena a energia recuperada dos processos eletromecânicos que necessitam de absorver grandes quantidades de energia. Desta forma, consegue‐se uma redução no consumo de energia. Os resultados da simulação mostram uma redução de 25% de energia e uma redução entre 80% a 90% em todas as categorias de emissões. Advisors/Committee Members: Andrade, António.

Subjects/Keywords: Perturbações na QEE; Tecnologias de armazenamento; Flywheel

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APA (6^th Edition):

Dias, C. R. (2013). Dimensionamento de um sistema UPS flywheel. (Thesis). Instituto Politécnico do Porto. Retrieved from http://www.rcaap.pt/detail.jsp?id=oai:recipp.ipp.pt:10400.22/4676

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):

Dias, Carlos Ribeiro. “Dimensionamento de um sistema UPS flywheel.” 2013. Thesis, Instituto Politécnico do Porto. Accessed January 18, 2021. http://www.rcaap.pt/detail.jsp?id=oai:recipp.ipp.pt:10400.22/4676.

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

MLA Handbook (7^th Edition):

Dias, Carlos Ribeiro. “Dimensionamento de um sistema UPS flywheel.” 2013. Web. 18 Jan 2021.

Vancouver:

Dias CR. Dimensionamento de um sistema UPS flywheel. [Internet] [Thesis]. Instituto Politécnico do Porto; 2013. [cited 2021 Jan 18]. Available from: http://www.rcaap.pt/detail.jsp?id=oai:recipp.ipp.pt:10400.22/4676.

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

Council of Science Editors:

Dias CR. Dimensionamento de um sistema UPS flywheel. [Thesis]. Instituto Politécnico do Porto; 2013. Available from: http://www.rcaap.pt/detail.jsp?id=oai:recipp.ipp.pt:10400.22/4676

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

Uppsala University

8. Östergård, Rickard. Flywheel energy storage : a conceptucal study.

Degree: Electricity, 2011, Uppsala University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-164500

► This master thesis was provided by ABB Cooperate Research in Västerås. This study has two major purposes: (1) to identify the characteristics of a… (more)

Subjects/Keywords: Energy storage; Smart Grid; Flywheel energy storage

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APA (6^th Edition):

Östergård, R. (2011). Flywheel energy storage : a conceptucal study. (Thesis). Uppsala University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-164500

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):

Östergård, Rickard. “Flywheel energy storage : a conceptucal study.” 2011. Thesis, Uppsala University. Accessed January 18, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-164500.

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

MLA Handbook (7^th Edition):

Östergård, Rickard. “Flywheel energy storage : a conceptucal study.” 2011. Web. 18 Jan 2021.

Vancouver:

Östergård R. Flywheel energy storage : a conceptucal study. [Internet] [Thesis]. Uppsala University; 2011. [cited 2021 Jan 18]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-164500.

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

Council of Science Editors:

Östergård R. Flywheel energy storage : a conceptucal study. [Thesis]. Uppsala University; 2011. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-164500

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

University of Minnesota

9. Severson, Eric. Bearingless AC Homopolar Machine Design and Control for Distributed Flywheel Energy Storage.

Degree: PhD, Electrical Engineering, 2015, University of Minnesota

URL: http://hdl.handle.net/11299/182757

► The increasing ownership of electric vehicles, in-home solar and wind generation, and wider penetration of renewable energies onto the power grid has created a need… (more)

▼ The increasing ownership of electric vehicles, in-home solar and wind generation, and wider penetration of renewable energies onto the power grid has created a need for grid-based energy storage to provide energy-neutral services. These services include frequency regulation, which requires short response-times, high power ramping capabilities, and several charge cycles over the course of one day; and diurnal load-/generation-following services to offset the inherent mismatch between renewable generation and the power grid's load profile, which requires low self-discharge so that a reasonable efficiency is obtained over a 24 hour storage interval. To realize the maximum benefits of energy storage, the technology should be modular and have minimum geographic constraints, so that it is easily scalable according to local demands. Furthermore, the technology must be economically viable to participate in the energy markets. There is currently no storage technology that is able to simultaneously meet all of these needs. This dissertation focuses on developing a new energy storage device based on flywheel technology to meet these needs. It is shown that the bearingless ac homopolar machine can be used to overcome key obstacles in flywheel technology, namely: unacceptable self-discharge and overall system cost and complexity. Bearingless machines combine the functionality of a magnetic bearing and a motor/generator into a single electromechanical device. Design of these machines is particularly challenging due to cross-coupling effects and trade-offs between motor and magnetic bearing capabilities. The bearingless ac homopolar machine adds to these design challenges due to its 3D flux paths requiring computationally expensive 3D finite element analysis. At the time this dissertation was started, bearingless ac homopolar machines were a highly immature technology. This dissertation advances the state-of-the-art of these machines through research contributions in the areas of magnetic modeling, winding design, control, and power-electronic drive implementation. While these contributions are oriented towards facilitating more optimal flywheel designs, they will also be useful in applying the bearingless ac homopolar machine in other applications. Example designs are considered through finite element analysis and experimental validation is provided from a proof-of-concept prototype that has been designed and constructed as a part of this dissertation.

Subjects/Keywords: bearingless; flywheel; generator; homopolar; motor; storage

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APA (6^th Edition):

Severson, E. (2015). Bearingless AC Homopolar Machine Design and Control for Distributed Flywheel Energy Storage. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/182757

Chicago Manual of Style (16^th Edition):

Severson, Eric. “Bearingless AC Homopolar Machine Design and Control for Distributed Flywheel Energy Storage.” 2015. Doctoral Dissertation, University of Minnesota. Accessed January 18, 2021. http://hdl.handle.net/11299/182757.

MLA Handbook (7^th Edition):

Severson, Eric. “Bearingless AC Homopolar Machine Design and Control for Distributed Flywheel Energy Storage.” 2015. Web. 18 Jan 2021.

Vancouver:

Severson E. Bearingless AC Homopolar Machine Design and Control for Distributed Flywheel Energy Storage. [Internet] [Doctoral dissertation]. University of Minnesota; 2015. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/11299/182757.

Council of Science Editors:

Severson E. Bearingless AC Homopolar Machine Design and Control for Distributed Flywheel Energy Storage. [Doctoral Dissertation]. University of Minnesota; 2015. Available from: http://hdl.handle.net/11299/182757

10. Benson, Brian C. Design and Analysis of a Rapid Kinetic Energy Transmission Mechanism.

Degree: ME, 2011, Worcester Polytechnic Institute

URL: etd-042611-092741 ; https://digitalcommons.wpi.edu/etd-theses/327

► The rapid release of energy in mechanisms is often limited by conversion of potential energy to kinetic energy. The use of a flywheel to store… (more)

Subjects/Keywords: Four Bar Linkage; Clutch; Flywheel; Dynamic Model

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APA (6^th Edition):

Benson, B. C. (2011). Design and Analysis of a Rapid Kinetic Energy Transmission Mechanism. (Thesis). Worcester Polytechnic Institute. Retrieved from etd-042611-092741 ; https://digitalcommons.wpi.edu/etd-theses/327

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):

Benson, Brian C. “Design and Analysis of a Rapid Kinetic Energy Transmission Mechanism.” 2011. Thesis, Worcester Polytechnic Institute. Accessed January 18, 2021. etd-042611-092741 ; https://digitalcommons.wpi.edu/etd-theses/327.

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

MLA Handbook (7^th Edition):

Benson, Brian C. “Design and Analysis of a Rapid Kinetic Energy Transmission Mechanism.” 2011. Web. 18 Jan 2021.

Vancouver:

Benson BC. Design and Analysis of a Rapid Kinetic Energy Transmission Mechanism. [Internet] [Thesis]. Worcester Polytechnic Institute; 2011. [cited 2021 Jan 18]. Available from: etd-042611-092741 ; https://digitalcommons.wpi.edu/etd-theses/327.

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

Council of Science Editors:

Benson BC. Design and Analysis of a Rapid Kinetic Energy Transmission Mechanism. [Thesis]. Worcester Polytechnic Institute; 2011. Available from: etd-042611-092741 ; https://digitalcommons.wpi.edu/etd-theses/327

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

Texas A&M University

11. Farrokhzadershad, Nima. Development of Dual Shaft Electric Motor with Independent Input-Output Torque-Speed for Vehicle Kinetic Energy Recovery Systems.

Degree: PhD, Electrical Engineering, 2018, Texas A&M University

URL: http://hdl.handle.net/1969.1/188936

► This study is about development of a new family of electric machines with two mechanical and one/two electrical ports (Transmotors). These machines remove the limitations… (more)

Subjects/Keywords: Flywheel; Kinetic Energy Recovery; Electric Vehicle; Transmotor

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APA (6^th Edition):

Farrokhzadershad, N. (2018). Development of Dual Shaft Electric Motor with Independent Input-Output Torque-Speed for Vehicle Kinetic Energy Recovery Systems. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/188936

Chicago Manual of Style (16^th Edition):

Farrokhzadershad, Nima. “Development of Dual Shaft Electric Motor with Independent Input-Output Torque-Speed for Vehicle Kinetic Energy Recovery Systems.” 2018. Doctoral Dissertation, Texas A&M University. Accessed January 18, 2021. http://hdl.handle.net/1969.1/188936.

MLA Handbook (7^th Edition):

Farrokhzadershad, Nima. “Development of Dual Shaft Electric Motor with Independent Input-Output Torque-Speed for Vehicle Kinetic Energy Recovery Systems.” 2018. Web. 18 Jan 2021.

Vancouver:

Farrokhzadershad N. Development of Dual Shaft Electric Motor with Independent Input-Output Torque-Speed for Vehicle Kinetic Energy Recovery Systems. [Internet] [Doctoral dissertation]. Texas A&M University; 2018. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/1969.1/188936.

Council of Science Editors:

Farrokhzadershad N. Development of Dual Shaft Electric Motor with Independent Input-Output Torque-Speed for Vehicle Kinetic Energy Recovery Systems. [Doctoral Dissertation]. Texas A&M University; 2018. Available from: http://hdl.handle.net/1969.1/188936

Texas A&M University

12. Farrokhzadershad, Nima. Development of Dual Shaft Electric Motor with Independent Input-Output Torque-Speed for Vehicle Kinetic Energy Recovery Systems.

Degree: PhD, Electrical Engineering, 2018, Texas A&M University

URL: http://hdl.handle.net/1969.1/188935

► This study is about development of a new family of electric machines with two mechanical and one/two electrical ports (Transmotors). These machines remove the limitations… (more)

Subjects/Keywords: Flywheel; Kinetic Energy Recovery; Electric Vehicle; Transmotor

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):

Farrokhzadershad, N. (2018). Development of Dual Shaft Electric Motor with Independent Input-Output Torque-Speed for Vehicle Kinetic Energy Recovery Systems. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/188935

Chicago Manual of Style (16^th Edition):

Farrokhzadershad, Nima. “Development of Dual Shaft Electric Motor with Independent Input-Output Torque-Speed for Vehicle Kinetic Energy Recovery Systems.” 2018. Doctoral Dissertation, Texas A&M University. Accessed January 18, 2021. http://hdl.handle.net/1969.1/188935.

MLA Handbook (7^th Edition):

Farrokhzadershad, Nima. “Development of Dual Shaft Electric Motor with Independent Input-Output Torque-Speed for Vehicle Kinetic Energy Recovery Systems.” 2018. Web. 18 Jan 2021.

Vancouver:

Farrokhzadershad N. Development of Dual Shaft Electric Motor with Independent Input-Output Torque-Speed for Vehicle Kinetic Energy Recovery Systems. [Internet] [Doctoral dissertation]. Texas A&M University; 2018. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/1969.1/188935.

Council of Science Editors:

Farrokhzadershad N. Development of Dual Shaft Electric Motor with Independent Input-Output Torque-Speed for Vehicle Kinetic Energy Recovery Systems. [Doctoral Dissertation]. Texas A&M University; 2018. Available from: http://hdl.handle.net/1969.1/188935

The Ohio State University

13. Justus, Dennis John. The flywheel-powered hybrid urban vehicle: a feasibilty study.

Degree: MS, Mechanical Engineering, 1973, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1133989636

Subjects/Keywords: FLYWHEEL; HYDRAULIC; VEHICLE

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APA (6^th Edition):

Justus, D. J. (1973). The flywheel-powered hybrid urban vehicle: a feasibilty study. (Masters Thesis). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1133989636

Chicago Manual of Style (16^th Edition):

Justus, Dennis John. “The flywheel-powered hybrid urban vehicle: a feasibilty study.” 1973. Masters Thesis, The Ohio State University. Accessed January 18, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1133989636.

MLA Handbook (7^th Edition):

Justus, Dennis John. “The flywheel-powered hybrid urban vehicle: a feasibilty study.” 1973. Web. 18 Jan 2021.

Vancouver:

Justus DJ. The flywheel-powered hybrid urban vehicle: a feasibilty study. [Internet] [Masters thesis]. The Ohio State University; 1973. [cited 2021 Jan 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1133989636.

Council of Science Editors:

Justus DJ. The flywheel-powered hybrid urban vehicle: a feasibilty study. [Masters Thesis]. The Ohio State University; 1973. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1133989636

14. Petré, Henrik. Svänghjulstränings inverkan på styrkerelaterade variabler - en metaanalys.

Degree: Sport and Health Sciences, 2016, Swedish School of Sport and Health Sciences

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:gih:diva-4551

►

Syfte och frågeställning Syftet med denna studie är att identifiera effekten av svänghjulsträning på styrkerelaterade variabler som påverkar idrottslig prestation genom en sammanställning av… (more)

▼

Syfte och frågeställning Syftet med denna studie är att identifiera effekten av svänghjulsträning på styrkerelaterade variabler som påverkar idrottslig prestation genom en sammanställning av befintlig vetenskaplig litteratur. Studiens frågeställning var: (1) Vilken effekt har svänghjulsträning på muskeltillväxt (hypertrofi)? (2) Vilken effekt har svänghjulsträning på utvecklingen av maximal styrka? (3) Vilken effekt har svänghjulsträning på utvecklingen av Power (effektutveckling)? (4) Vilken effekt har svänghjulsträning på horisontell förflyttning? (5) Vilken effekt har svänghjulsträning på vertikal förflyttning? Metod En metaanalys för 15 experimentella studier som uppfyllt urvalskriterierna genomfördes. De inkluderade studierna kvalitetsgranskades med Pedros skala. För att möjliggöra en sammanställning av samtliga resultat analyserades resultaten i dataprogrammet Review Manager version 5.3 med Random effekt modell och presenteras med Forest plots. Jämförelserna gjordes över en period på 4-24 veckor. Resultat Svänghjulsträning under en period av 4-24 veckor visar på en statistisk signifikant utveckling av muskulär hypertrofi (effektstorlek 0,68), maximal styrka (1,40), Power (1,0), horisontell (0,54) och vertikal förflyttning (0,60). Slutsats Det finns stöd i litteraturen för att friska individer presterar bättre på så väl dynamiska styrketest som funktionella test efter svänghjulsträning. Evidensen är särskilt stark för att svänghjulsträning utvecklar maximal styrka och Power för tränade yngre individer samt i kortare mer intensiva block. Denna metaanalys har bara sammanställt skillnader i prestation före och efter svänghjulsträning och kan därför inte säga om effekten av svänghjulsträning är större än effekten av upprepade mätningar eller annan träning.

Aim The aim of this study was to identify the effect of the flywheel training on strength-related variables that affect athletic performance by compiling existing scientific literature. Research questions: (1) What effect does flywheel training have on muscle growth (hypertrophy)? (2) What effect does flywheel training have on the development of maximum strength? (3) What effect does flywheel training have on the development of Power (effect development)? (4) What effect does flywheel training have on the development of horizontal movement? (5) What effect does flywheel training have on the development of vertical movement? Method A meta-analysis was conducted from 15 experimental studies that met the selection criteria. The quality of included studies was reviewed by Pedro scale. In order to identify possible bias in the selection process a Funnel plot was carried out. To enable the compilation of all results an analyze with Random effect model was carried out with software Review Manager Version 5.3 and presented with Forest plots. Comparisons were made over a period of 4-24…

Subjects/Keywords: flywheel training; inertia training; flywheel inertia; flywheel resistance training; flywheel resistance exercise; training eccentric overload; flywheel muscle exercise; isoload and isoinertial; svänghjulsträning; svänghjul; tröghet; styrketräning; hypertrofi; maximal styrka; Power; styrkerelaterade variabler; metaanalys; excentrisk träning; YO-YO; kBox

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

APA (6^th Edition):

Petré, H. (2016). Svänghjulstränings inverkan på styrkerelaterade variabler - en metaanalys. (Thesis). Swedish School of Sport and Health Sciences. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:gih:diva-4551

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):

Petré, Henrik. “Svänghjulstränings inverkan på styrkerelaterade variabler - en metaanalys.” 2016. Thesis, Swedish School of Sport and Health Sciences. Accessed January 18, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:gih:diva-4551.

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

MLA Handbook (7^th Edition):

Petré, Henrik. “Svänghjulstränings inverkan på styrkerelaterade variabler - en metaanalys.” 2016. Web. 18 Jan 2021.

Vancouver:

Petré H. Svänghjulstränings inverkan på styrkerelaterade variabler - en metaanalys. [Internet] [Thesis]. Swedish School of Sport and Health Sciences; 2016. [cited 2021 Jan 18]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:gih:diva-4551.

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

Council of Science Editors:

Petré H. Svänghjulstränings inverkan på styrkerelaterade variabler - en metaanalys. [Thesis]. Swedish School of Sport and Health Sciences; 2016. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:gih:diva-4551

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

NSYSU

15. Ke, Chou-fang. Dynamic Responses of the High Speed Intermittent Systems with Variable Inertia Flywheels.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2010, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0719110-152828

► The effect of variable inertia flywheel (VIF) on the driving speed fluctuation, and residual vibration of high speed machine systems is investigated in this thesis.… (more)

Subjects/Keywords: cam mechanism; fluctuation; Runge-Kutta method; variable inertia flywheel

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

APA (6^th Edition):

Ke, C. (2010). Dynamic Responses of the High Speed Intermittent Systems with Variable Inertia Flywheels. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0719110-152828

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):

Ke, Chou-fang. “Dynamic Responses of the High Speed Intermittent Systems with Variable Inertia Flywheels.” 2010. Thesis, NSYSU. Accessed January 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0719110-152828.

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

MLA Handbook (7^th Edition):

Ke, Chou-fang. “Dynamic Responses of the High Speed Intermittent Systems with Variable Inertia Flywheels.” 2010. Web. 18 Jan 2021.

Vancouver:

Ke C. Dynamic Responses of the High Speed Intermittent Systems with Variable Inertia Flywheels. [Internet] [Thesis]. NSYSU; 2010. [cited 2021 Jan 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0719110-152828.

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

Council of Science Editors:

Ke C. Dynamic Responses of the High Speed Intermittent Systems with Variable Inertia Flywheels. [Thesis]. NSYSU; 2010. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0719110-152828

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

NSYSU

16. Yang, Chung-hsuan. The Optimization Analysis on Dual Input Transmission Mechanisms of Wind Turbines.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2012, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0718112-132704

► ããThe dynamic power flow in a dual-input parallel planetary gear train system is simulated in this study. Different wind powers for the small wind turbines… (more)

Subjects/Keywords: Variable Inertia Flywheel; Genetic Algorithm; Wind Turbine System

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APA (6^th Edition):

Yang, C. (2012). The Optimization Analysis on Dual Input Transmission Mechanisms of Wind Turbines. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0718112-132704

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):

Yang, Chung-hsuan. “The Optimization Analysis on Dual Input Transmission Mechanisms of Wind Turbines.” 2012. Thesis, NSYSU. Accessed January 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0718112-132704.

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

MLA Handbook (7^th Edition):

Yang, Chung-hsuan. “The Optimization Analysis on Dual Input Transmission Mechanisms of Wind Turbines.” 2012. Web. 18 Jan 2021.

Vancouver:

Yang C. The Optimization Analysis on Dual Input Transmission Mechanisms of Wind Turbines. [Internet] [Thesis]. NSYSU; 2012. [cited 2021 Jan 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0718112-132704.

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

Council of Science Editors:

Yang C. The Optimization Analysis on Dual Input Transmission Mechanisms of Wind Turbines. [Thesis]. NSYSU; 2012. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0718112-132704

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

University of California – Berkeley

17. Xin, Siyuan. Design, Analysis, and Testing of Large Scale Kinetic Energy Storage Systems.

Degree: Mechanical Engineering, 2015, University of California – Berkeley

URL: http://www.escholarship.org/uc/item/9xn418t5

► AbstractDesign, Analysis, and Testing of Large Capacity Kinetic Energy Storage SystemsbySiyuan XinDoctor of Philosophy in Engineering – Mechanical EngineeringUniversity of California, BerkeleyProfessor David Steigmann, ChairGlobal… (more)

▼ AbstractDesign, Analysis, and Testing of Large Capacity Kinetic Energy Storage SystemsbySiyuan XinDoctor of Philosophy in Engineering – Mechanical EngineeringUniversity of California, BerkeleyProfessor David Steigmann, ChairGlobal warming, climate change and pollution caused by the traditional energy generation technologies have become some of the biggest threats in today’s world. And the need for more energy is ever increasing. Development of renewable energy, such as solar and wind, as well as distributed smart grids are needed to replace the old energy production methods. Governments have set goals of increasing the proportion of clean energy generation. One major limiting factor of the development of renewable energy is that these energy sources is not as reliable and as stable as the traditional power sources to meet the energy demand. This problem can only be effectively solved by the use of energy storage to store excess power produced by the renewable energy sources. Therefore, energy storage, especially large scale energy storage systems, will be the key factor for enabling renewable energy to become the primary sources of energy. Current energy storage technologies include batteries, flywheel, supercapacitors, pumped hydro, and so on. But due to the issues of capacity, efficiency, life cycles or costs of these current energy storage technologies, a large scale energy storage system that has low cost, long life cycles and high efficiency is yet to be developed to be integrated with renewable energy generation and smart grids. In this work, the design, analysis and tests of large scale flywheel energy storage systems are carried out. The flywheel energy storage system will feature a large steel rotor. Theoretical analysis of the stress distribution of the rotor is discussed to give a parametric view of the key elements in the design. Material testing such as tensile tests, fracture toughness tests, and fatigue crack propagation tests are conducted to characterize the behavior of the rotor material. Finite element method is used to analyze the stress-strain distribution of the rotor in order to optimize the shape of the rotor and determine the rotational speed. Also frequency analysis using finite element method gives the dynamic response of the rotor. Catastrophic failure of the rotor can cause big damages and need to be prevented from happening. And therefore, fracture mechanics is applied to analyze the safety margin and estimate the lifetime of the flywheel system. Post failure analysis is also discussed in case of rotor failure. Energy storage efficiency is a crucial factor in order for the flywheel energy storage system to be applicable. The rotor is kept in low vacuum pressure to minimize aerodynamic drag and improve energy storage efficiency. An analytical model of aerodynamic drag on the rotor is developed. Experimental measurements of drag power loss on a disc rotor inside a controlled vacuum chamber are compared to the predicted results of the analytical model. Design of sub-systems such as bearings…

Subjects/Keywords: Mechanical engineering; Energy; Energy Storage; Flywheel; Kinetic Energy Storage; Rotor

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APA (6^th Edition):

Xin, S. (2015). Design, Analysis, and Testing of Large Scale Kinetic Energy Storage Systems. (Thesis). University of California – Berkeley. Retrieved from http://www.escholarship.org/uc/item/9xn418t5

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):

Xin, Siyuan. “Design, Analysis, and Testing of Large Scale Kinetic Energy Storage Systems.” 2015. Thesis, University of California – Berkeley. Accessed January 18, 2021. http://www.escholarship.org/uc/item/9xn418t5.

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

MLA Handbook (7^th Edition):

Xin, Siyuan. “Design, Analysis, and Testing of Large Scale Kinetic Energy Storage Systems.” 2015. Web. 18 Jan 2021.

Vancouver:

Xin S. Design, Analysis, and Testing of Large Scale Kinetic Energy Storage Systems. [Internet] [Thesis]. University of California – Berkeley; 2015. [cited 2021 Jan 18]. Available from: http://www.escholarship.org/uc/item/9xn418t5.

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

Council of Science Editors:

Xin S. Design, Analysis, and Testing of Large Scale Kinetic Energy Storage Systems. [Thesis]. University of California – Berkeley; 2015. Available from: http://www.escholarship.org/uc/item/9xn418t5

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

University of Ottawa

18. Yang, Shuai. Development of Non-linear Two-Terminal Mass Components for Application to Vehicle Suspension Systems .

Degree: 2017, University of Ottawa

URL: http://hdl.handle.net/10393/36497

► To achieve passive vibration control, an adaptive flywheel design is proposed and fabricated from two different materials. The corresponding mathematical models for the adaptive flywheels… (more)

Subjects/Keywords: Two-terminal; Non-linear; Adaptive flywheel; Car suspension

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APA (6^th Edition):

Yang, S. (2017). Development of Non-linear Two-Terminal Mass Components for Application to Vehicle Suspension Systems . (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/36497

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):

Yang, Shuai. “Development of Non-linear Two-Terminal Mass Components for Application to Vehicle Suspension Systems .” 2017. Thesis, University of Ottawa. Accessed January 18, 2021. http://hdl.handle.net/10393/36497.

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

MLA Handbook (7^th Edition):

Yang, Shuai. “Development of Non-linear Two-Terminal Mass Components for Application to Vehicle Suspension Systems .” 2017. Web. 18 Jan 2021.

Vancouver:

Yang S. Development of Non-linear Two-Terminal Mass Components for Application to Vehicle Suspension Systems . [Internet] [Thesis]. University of Ottawa; 2017. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/10393/36497.

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

Council of Science Editors:

Yang S. Development of Non-linear Two-Terminal Mass Components for Application to Vehicle Suspension Systems . [Thesis]. University of Ottawa; 2017. Available from: http://hdl.handle.net/10393/36497

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

Uppsala University

19. Finnstedt, Nils. Design and Construction of an EV Driveline Prototype with an Integrated Flywheel.

Degree: Electricity, 2010, Uppsala University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-122509

► Research shows that flywheels have a significant potential for improving the performance of EV (Electric Vehicle) drivelines. Flywheels can be used as power buffers… (more)

Subjects/Keywords: Flywheel; Driveline; EV; Power Converter

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APA (6^th Edition):

Finnstedt, N. (2010). Design and Construction of an EV Driveline Prototype with an Integrated Flywheel. (Thesis). Uppsala University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-122509

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):

Finnstedt, Nils. “Design and Construction of an EV Driveline Prototype with an Integrated Flywheel.” 2010. Thesis, Uppsala University. Accessed January 18, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-122509.

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

MLA Handbook (7^th Edition):

Finnstedt, Nils. “Design and Construction of an EV Driveline Prototype with an Integrated Flywheel.” 2010. Web. 18 Jan 2021.

Vancouver:

Finnstedt N. Design and Construction of an EV Driveline Prototype with an Integrated Flywheel. [Internet] [Thesis]. Uppsala University; 2010. [cited 2021 Jan 18]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-122509.

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

Council of Science Editors:

Finnstedt N. Design and Construction of an EV Driveline Prototype with an Integrated Flywheel. [Thesis]. Uppsala University; 2010. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-122509

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

Delft University of Technology

20. van Leeuwen, Menno (author). Hybrid solutions for cutter suction dredgers: A feasibility study on the application of electrical energy storage.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:f2460767-9e27-4d28-8cdd-f3a345f28779

► Cutter suction dredgers are a type of hydraulic dredgers often used in areas with hard soil where other types of dredging vessels would be ineffective.… (more)

▼ Cutter suction dredgers are a type of hydraulic dredgers often used in areas with hard soil where other types of dredging vessels would be ineffective. As a result of the wide range of type of soil that is being cut a lot of variation is seen in the power demand on the cutter suction dredger's diesel-electric power generation system. Consequently, the load on the main diesel engines rapidly changes. To smoothen power demand the addition of an energy storage system to the power generation system is investigated to reduce the load variation experienced by the main engines. Reduction of the load variation is also relevant for the application of dual fuel engines in cutter suction dredgers. For dual fuel engines exceeding of the loading limit poses a significant risk of the main engines switching from combustion of (liquefied) natural gas to combustion of diesel fuel to prevent misfiring or engine knocking. Better control of the engine load is expected to allow continuous combustion of liquefied natural gas during dredging operation. From the analysis of the power demand measured during dredging operation it is concluded that energy storage systems capable of delivering high power and have relatively low energy storage capability are best suited for this application. Based on the required characteristics flywheel energy storage and supercapacitor energy storage are selected as suitable energy storage systems. For both energy storage systems a simulation model is created based on available literature. A benchmark simulation model of the driveline of a cutter suction dredger, including the power generation system and electrical network, is created and validated using measurement data. The power and energy storage capacity of the energy storage system are determined by exceeding of the loading capacity of the main engines defined by the engine manufacturer during several months of continuous dredging operation. Separate cases are investigated where a supercapacitor energy storage system and a flywheel energy storage system are added. Simulation results are compared to the results of the benchmark model. Furthermore, simulations are conducted where the main diesel engines are replaced by dual fuel engines running on liquefied natural gas with a methane number of 80. Results show that both energy storage systems are capable of increasing the percentage of load variation within the engine limit on the original driveline from 91% to at least 99%. For dual fuel engines it is found that without an energy storage system 75% of the load variation is within the engine's loading limit, meaning switching to diesel fuel is inevitable during dredging operation. The addition of an energy storage system increases the percentage of load variation within the engine's loading limit to at least 98%. While the engine limit is still rarely exceeded, further analysis showed that the air excess ratio stays between the knock limit and misfire limit, meaning no switching to diesel fuel is required. As a result, continuous dredging… Advisors/Committee Members: de Vos, Peter (mentor), Delft University of Technology (degree granting institution).

Subjects/Keywords: Hybrid; Dredging; Supercapacitor; Flywheel; Transient operation; Peak shaving; LNG

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APA (6^th Edition):

van Leeuwen, M. (. (2017). Hybrid solutions for cutter suction dredgers: A feasibility study on the application of electrical energy storage. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:f2460767-9e27-4d28-8cdd-f3a345f28779

Chicago Manual of Style (16^th Edition):

van Leeuwen, Menno (author). “Hybrid solutions for cutter suction dredgers: A feasibility study on the application of electrical energy storage.” 2017. Masters Thesis, Delft University of Technology. Accessed January 18, 2021. http://resolver.tudelft.nl/uuid:f2460767-9e27-4d28-8cdd-f3a345f28779.

MLA Handbook (7^th Edition):

van Leeuwen, Menno (author). “Hybrid solutions for cutter suction dredgers: A feasibility study on the application of electrical energy storage.” 2017. Web. 18 Jan 2021.

Vancouver:

van Leeuwen M(. Hybrid solutions for cutter suction dredgers: A feasibility study on the application of electrical energy storage. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Jan 18]. Available from: http://resolver.tudelft.nl/uuid:f2460767-9e27-4d28-8cdd-f3a345f28779.

Council of Science Editors:

van Leeuwen M(. Hybrid solutions for cutter suction dredgers: A feasibility study on the application of electrical energy storage. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:f2460767-9e27-4d28-8cdd-f3a345f28779

21. Cusack, Jessy L. Design of a High Speed Clutch with Mechanical Pulse-Width Control.

Degree: MS, 2013, Worcester Polytechnic Institute

URL: etd-030613-094613 ; https://digitalcommons.wpi.edu/etd-theses/173

► Kinetic energy storage via flywheels is an emerging avenue for hybrid vehicle research, offering both high energy and power density compared to more established… (more)

▼ Kinetic energy storage via flywheels is an emerging avenue for hybrid vehicle research, offering both high energy and power density compared to more established electric and hydraulic alternatives. However, connecting the high speed flywheel to the relatively low speed drivetrain of the vehicle is a persistent challenge, requiring a transmission with high variability and efficiency. A proposed solution drawing inspiration from the electrical domain is the Switch-Mode Continuously Variable Transmission (SM CVT), which uses a high speed clutch to transfer energy to a torsion spring in discrete pulses with a variable duty cycle. The greatest limitation to the performance of this system is the speed and efficiency of commercial clutch technology. It is the goal of this thesis to develop a novel clutch which meets the actuation speed, controllability, and efficiency requirements of the SM CVT, with potential for reapplication in other rotary mechanical systems with switching functionality. The performance demands of the clutch were derived via a theoretical design case based on the performance requirements of a typical passenger vehicle, indicating the need for a sub-millisecond engagement and disengagement cycle. This is not met by any conventional clutch. Several concepts were considered across the fluid, electromagnetic and mechanical energy domains. A final concept was chosen which employs a friction disk style architecture, with normal force produced by compressing springs via an axial cam mounted to the flywheel. To control duty cycle, the cam was designed with a radially varying profile such that increasing radial position results in proportionally increasing ratio of high dwell to low dwell. Three synchronized followers are then translated radially on the cam by a control linkage. Analysis of the follower train dynamics and system stiffness were carried out to inform the design of a scaled benchtop prototype. Experimental testing was carried out to characterize the performance of the prototype. It was found that the intended functionality of the design was achieved, with discrete energy transfer accomplished via pulsing of the clutch. However, maximum efficiency was only 33% and torque capacity was only 65% of the intended 70Nm. Significant opportunity exists for improvement of the clutch performance in future research. Advisors/Committee Members: James D. Van de Ven, Advisor, Mark W. Richman, Committee Member, John M. Sullivan, Jr., Committee Member, Holly K. Ault, Committee Member.

Subjects/Keywords: transmission; CVT; clutch; switch-mode; flywheel; hybrid; cam

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APA (6^th Edition):

Cusack, J. L. (2013). Design of a High Speed Clutch with Mechanical Pulse-Width Control. (Thesis). Worcester Polytechnic Institute. Retrieved from etd-030613-094613 ; https://digitalcommons.wpi.edu/etd-theses/173

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):

Cusack, Jessy L. “Design of a High Speed Clutch with Mechanical Pulse-Width Control.” 2013. Thesis, Worcester Polytechnic Institute. Accessed January 18, 2021. etd-030613-094613 ; https://digitalcommons.wpi.edu/etd-theses/173.

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

MLA Handbook (7^th Edition):

Cusack, Jessy L. “Design of a High Speed Clutch with Mechanical Pulse-Width Control.” 2013. Web. 18 Jan 2021.

Vancouver:

Cusack JL. Design of a High Speed Clutch with Mechanical Pulse-Width Control. [Internet] [Thesis]. Worcester Polytechnic Institute; 2013. [cited 2021 Jan 18]. Available from: etd-030613-094613 ; https://digitalcommons.wpi.edu/etd-theses/173.

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

Council of Science Editors:

Cusack JL. Design of a High Speed Clutch with Mechanical Pulse-Width Control. [Thesis]. Worcester Polytechnic Institute; 2013. Available from: etd-030613-094613 ; https://digitalcommons.wpi.edu/etd-theses/173

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

Brno University of Technology

22. Chlud, Martin. Konstrukce standu pro laboratorní testování rozjezdu pneumobilu: Design the stand for laboratory testing of pneumobil acceleration.

Degree: 2016, Brno University of Technology

URL: http://hdl.handle.net/11012/60039

The Bachelor’s thesis deals with solution about pneumobile laboratory testing. It focuses especially on acceleration.There is suggested concept of flywheel based on calculations. The concept simulates inertia of pneumobil. Advisors/Committee Members: Koutný, Daniel (advisor), Nohál, Libor (referee).

Subjects/Keywords: Setrvačník; pneumobil; simulace rozjezdu; Flywheel; pneumobil; accelereation simulation

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APA (6^th Edition):

Chlud, M. (2016). Konstrukce standu pro laboratorní testování rozjezdu pneumobilu: Design the stand for laboratory testing of pneumobil acceleration. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/60039

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):

Chlud, Martin. “Konstrukce standu pro laboratorní testování rozjezdu pneumobilu: Design the stand for laboratory testing of pneumobil acceleration.” 2016. Thesis, Brno University of Technology. Accessed January 18, 2021. http://hdl.handle.net/11012/60039.

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

MLA Handbook (7^th Edition):

Chlud, Martin. “Konstrukce standu pro laboratorní testování rozjezdu pneumobilu: Design the stand for laboratory testing of pneumobil acceleration.” 2016. Web. 18 Jan 2021.

Vancouver:

Chlud M. Konstrukce standu pro laboratorní testování rozjezdu pneumobilu: Design the stand for laboratory testing of pneumobil acceleration. [Internet] [Thesis]. Brno University of Technology; 2016. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/11012/60039.

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

Council of Science Editors:

Chlud M. Konstrukce standu pro laboratorní testování rozjezdu pneumobilu: Design the stand for laboratory testing of pneumobil acceleration. [Thesis]. Brno University of Technology; 2016. Available from: http://hdl.handle.net/11012/60039

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

University of New South Wales

23. Uddin, Md. Sayem. Finite element modelling and analysis of composite flywheel disk including effects of filament-winding mosaic pattern.

Degree: Engineering & Information Technology, 2013, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/53117 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:11803/SOURCE01?view=true

► A filament-wound spinning composite disk is characterised by the mosaic-patterned configuration of the layers produced during a filament-winding process. In this structure, each helically wound… (more)

▼ A filament-wound spinning composite disk is characterised by the mosaic-patterned configuration of the layers produced during a filament-winding process. In this structure, each helically wound layer consists of curved triangular-shaped units alternating in the radial and circumferential directions. The mosaic-patterned configuration is not normally considered in the general stress analysis procedures based on the conventional modelling of laminated composite structures, including those available in FEA packages. However, the filament-winding mosaic pattern of the composite layer could significantly affect the stress fields developed due to rotational loading. Therefore, a methodology for the FE modelling and analysis of the filament-wound disk taking into account this effect is developed and structural analyses are performed using ANSYS, with different types of filament-winding mosaic patterns incorporated. Also, the disk is modelled and analysed using a conventional method and the differences in predicted stress values from both techniques are demonstrated through distributions of various stresses.The modelling governed by the first order shear deformation theory is performed using the SHELL 281 element. Firstly, using a conventional approach, the filament-wound composite disk is modelled as a laminated circular plate composed of different numbers of plies in which interlacing of plies due to filament-winding is not considered. Alternatively, three designs composed of 4, 8 and 14 plies are chosen to model the mosaic-patterned structure and to demonstrate changes in the stress levels in different layers and the extent of the influence of ply interlacing. Each design is associated with three types of mosaic-patterned configurations, namely 4, 6 and 8 mosaic units around the circumference of the disk. The disk is rotated at a constant angular velocity with the boundary conditions to prevent in-plane rigid body motions in both the radial and circumferential directions and also out-of-plane rigid body motion in the axial direction. As observed, the stress levels in the thin filament-wound composite flywheel disk could be underestimated in case of a structural analysis using the conventional mechanics of laminated structures.The layers of the filament-wound composite flywheel disk are reinforced with radially varying fibre trajectories that result in continuous changes in fibre orientation angles which generate stiffness variations and composite laminates with such stiffness variations are called variable-stiffness laminates. Thus, varying fibre trajectories should be modelled accurately to incorporate the actual stiffness variations for FEA of variable-stiffness composite structures. Therefore, a modelling approach is developed that would take into account the continuously varying fibre orientation angles derived from the predefined changing fibre trajectories. FE modelling of variable-stiffness laminates is performed using the proposed method and corresponding results obtained from various analyses are reported.Based… Advisors/Committee Members: Morozov, Prof. Evgeny V., Engineering & Information Technology, UNSW Canberra, UNSW, Shankar, Dr. Krishnakumar, Engineering & Information Technology, UNSW Canberra, UNSW.

Subjects/Keywords: mosaic unit; composite flywheel disk; filament-winding pattern

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APA (6^th Edition):

Uddin, M. S. (2013). Finite element modelling and analysis of composite flywheel disk including effects of filament-winding mosaic pattern. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/53117 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:11803/SOURCE01?view=true

Chicago Manual of Style (16^th Edition):

Uddin, Md Sayem. “Finite element modelling and analysis of composite flywheel disk including effects of filament-winding mosaic pattern.” 2013. Doctoral Dissertation, University of New South Wales. Accessed January 18, 2021. http://handle.unsw.edu.au/1959.4/53117 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:11803/SOURCE01?view=true.

MLA Handbook (7^th Edition):

Uddin, Md Sayem. “Finite element modelling and analysis of composite flywheel disk including effects of filament-winding mosaic pattern.” 2013. Web. 18 Jan 2021.

Vancouver:

Uddin MS. Finite element modelling and analysis of composite flywheel disk including effects of filament-winding mosaic pattern. [Internet] [Doctoral dissertation]. University of New South Wales; 2013. [cited 2021 Jan 18]. Available from: http://handle.unsw.edu.au/1959.4/53117 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:11803/SOURCE01?view=true.

Council of Science Editors:

Uddin MS. Finite element modelling and analysis of composite flywheel disk including effects of filament-winding mosaic pattern. [Doctoral Dissertation]. University of New South Wales; 2013. Available from: http://handle.unsw.edu.au/1959.4/53117 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:11803/SOURCE01?view=true

University of California – Berkeley

24. Talancon, Daniel Raul. Design, Fabrication, and Testing of the INSTAR [INertial STorage And Recovery] System: A Flywheel-based, High Power Energy Storage System for Improved Hybrid Vehicle Fuel Efficiency.

Degree: Mechanical Engineering, 2015, University of California – Berkeley

URL: http://www.escholarship.org/uc/item/328239cw

► This thesis describes the development of the INSTAR system: a high-power, cost-effective energy storage system designed to improve HEV regenerative braking capabilities by combining chemical… (more)

Subjects/Keywords: Engineering; Automotive engineering; Energy; Battery; Energy Storage; Flywheel; Hybrid Vehicle; Lithium-Ion; Regenerative Braking

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APA (6^th Edition):

Talancon, D. R. (2015). Design, Fabrication, and Testing of the INSTAR [INertial STorage And Recovery] System: A Flywheel-based, High Power Energy Storage System for Improved Hybrid Vehicle Fuel Efficiency. (Thesis). University of California – Berkeley. Retrieved from http://www.escholarship.org/uc/item/328239cw

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):

Talancon, Daniel Raul. “Design, Fabrication, and Testing of the INSTAR [INertial STorage And Recovery] System: A Flywheel-based, High Power Energy Storage System for Improved Hybrid Vehicle Fuel Efficiency.” 2015. Thesis, University of California – Berkeley. Accessed January 18, 2021. http://www.escholarship.org/uc/item/328239cw.

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

MLA Handbook (7^th Edition):

Talancon, Daniel Raul. “Design, Fabrication, and Testing of the INSTAR [INertial STorage And Recovery] System: A Flywheel-based, High Power Energy Storage System for Improved Hybrid Vehicle Fuel Efficiency.” 2015. Web. 18 Jan 2021.

Vancouver:

Talancon DR. Design, Fabrication, and Testing of the INSTAR [INertial STorage And Recovery] System: A Flywheel-based, High Power Energy Storage System for Improved Hybrid Vehicle Fuel Efficiency. [Internet] [Thesis]. University of California – Berkeley; 2015. [cited 2021 Jan 18]. Available from: http://www.escholarship.org/uc/item/328239cw.

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

Council of Science Editors:

Talancon DR. Design, Fabrication, and Testing of the INSTAR [INertial STorage And Recovery] System: A Flywheel-based, High Power Energy Storage System for Improved Hybrid Vehicle Fuel Efficiency. [Thesis]. University of California – Berkeley; 2015. Available from: http://www.escholarship.org/uc/item/328239cw

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

Penn State University

25. Emerson, Ryan Paul. Viscoelastic Flywheel Rotors: Modelling and Measurement.

Degree: 2008, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/6018

► An investigation of the creep behavior of polymer composites was performed in developing a closed-form structural model of advanced polymer matrix composite (PMC) flywheels. The… (more)

▼ An investigation of the creep behavior of polymer composites was performed in developing a closed-form structural model of advanced polymer matrix composite (PMC) flywheels. The model is of the linear-viscoelastic type, and is applicable to the design and analysis of multiple concentric-ring PMC flywheel rotors in a state of plane-stress. This model incorporates techniques for approximating the quasi-static response to general time-varying loads including rotation, temperature change, and interference-fits between adjacent rings. The model accounts for the effect of temperature on the material response using the time-temperature superposition principle. The quasi-elastic technique was used to discretize the linear viscoelastic constitutive law, allowing the derivation of approximate solutions for the stress and strain field variables. Experimental work performed in support of this model includes thermo-viscoelastic characterization of a unidirectional glass/epoxy composite. Experimental measurement of pressure loss and strain redistribution in interference-fitted filament-wound glass and carbon fiber PMC ring pairs was performed using moir¨¦ interferometry and electrical resistance strain gages. Good agreement between the data and the plane-stress model at locations away from the ring interfaces was obtained. With the purpose of making creep measurements through the radial thickness of high-speed rotating flywheels, a new optical displacement measurement method was developed. Notable improvements over a known related method include greater displacement sensitivity, the ability to measure rigid body vibrations and separate the associated vibration-induced displacement from the strain-induced displacement, and the ability to compensate for sensor drift during flywheel operation. Displacement measurements made on an aluminum rotor operating at a maximum speed of 16 krpm (255 m/s at the point of measurement) were made with 1-micrometer accuracy. At this speed, hoop strains were found to be within 40 to 125 microstrain of theoretical predictions. Relative to the theoretical hoop strains, the measured hoop strains differed by 5-6% at 16 krpm. Advisors/Committee Members: Heath F Hofmann, Committee Member, Charles E Bakis, Committee Chair/Co-Chair, Clifford Jesse Lissenden Iii, Committee Member, Renata S Engel, Committee Member, George A Lesieutre, Committee Member.

Subjects/Keywords: viscoelastic; strain measurement; rotor; Composite; flywheel

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

APA (6^th Edition):

Emerson, R. P. (2008). Viscoelastic Flywheel Rotors: Modelling and Measurement. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/6018

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):

Emerson, Ryan Paul. “Viscoelastic Flywheel Rotors: Modelling and Measurement.” 2008. Thesis, Penn State University. Accessed January 18, 2021. https://submit-etda.libraries.psu.edu/catalog/6018.

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

MLA Handbook (7^th Edition):

Emerson, Ryan Paul. “Viscoelastic Flywheel Rotors: Modelling and Measurement.” 2008. Web. 18 Jan 2021.

Vancouver:

Emerson RP. Viscoelastic Flywheel Rotors: Modelling and Measurement. [Internet] [Thesis]. Penn State University; 2008. [cited 2021 Jan 18]. Available from: https://submit-etda.libraries.psu.edu/catalog/6018.

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

Council of Science Editors:

Emerson RP. Viscoelastic Flywheel Rotors: Modelling and Measurement. [Thesis]. Penn State University; 2008. Available from: https://submit-etda.libraries.psu.edu/catalog/6018

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

Texas A&M University

26. Saeed, Ahmed. Vibration Suppression and Flywheel Energy Storage in a Drillstring Bottom-Hole-Assembly.

Degree: PhD, Mechanical Engineering, 2012, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2012-05-11035

► In this study, a novel concept for a downhole flywheel energy storage module to be embedded in a bottom-hole-assembly (BHA) is presented and modeled, as… (more)

▼ In this study, a novel concept for a downhole flywheel energy storage module to be embedded in a bottom-hole-assembly (BHA) is presented and modeled, as an alternative power source to existing lithium-ion battery packs currently deployed in measurement-while-drilling (MWD) or logging-while-drilling (LWD) operations. Lithium-ion batteries disadvantages include deteriorated performance in high temperature, limited lifetime that necessitates frequent replacement which elevates operational costs, and environmental disposal. Extreme and harsh downhole conditions necessitate that the flywheel module withstands temperatures and pressures exceeding 300 ?F and 20 kpsi, respectively, as well as violent vibrations encountered during drilling. Moreover, the flywheel module should adhere to the geometric constraints of the wellbore and its corresponding BHA. Hence, a flywheel sizing procedure was developed that takes into consideration the required energy to be stored, the surrounding environmental conditions, and the geometric constraints. A five-axis magnetic levitation control system was implemented and tuned to maintain continuous suspension of the flywheel under the harsh lateral, axial and torsional drilling vibrations of the BHA. Thus, an integrated finite element model was developed that included the rotordynamic behavior of the flywheel and the BHA, the component dynamics of the magnetic levitation control system, and the cutting dynamics of the drillbit for both PDC and tricone types. The model also included a newly developed coupling between lateral, axial and torsional vibrations. It was demonstrated through simulations conducted by numerical integration that the flywheel maintains levitation due to all different types of external vibration as well as its own lateral vibration due to mass unbalance. Moreover, a passive proof-mass-damper (PPMD) was developed that suppresses axial bit-bounce vibrations as well as torsional vibrations, and was extended to also mitigate lateral vibrations. Optimized values of the mass, stiffness and damping values of the PPMD were obtained by the hybrid analytical-numerical Chebyshev spectral method that was superior in computational efficiency to iterative numerical integration. This also enabled the fine-plotting of an operating stability chart indicating stability regions where bit-bounce and stick-slip are avoided. The proof-mass-damping concept was extended to the flywheel to be an active proof-mass-damper (APMD) where simulations indicated functionality for a light-weight BHA. Advisors/Committee Members: Palazzolo, Alan B. (advisor), Ahmed, Shehab (advisor), Kim, Won-jong (committee member), McAdams, Daniel (committee member).

Subjects/Keywords: Downhole Flywheel; Bottom-Hole-Assembly (BHA); Drillstring Vibrations; Drillbit Cutting Dynamics; Active Magnetic Bearing (AMB)

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

APA (6^th Edition):

Saeed, A. (2012). Vibration Suppression and Flywheel Energy Storage in a Drillstring Bottom-Hole-Assembly. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2012-05-11035

Chicago Manual of Style (16^th Edition):

Saeed, Ahmed. “Vibration Suppression and Flywheel Energy Storage in a Drillstring Bottom-Hole-Assembly.” 2012. Doctoral Dissertation, Texas A&M University. Accessed January 18, 2021. http://hdl.handle.net/1969.1/ETD-TAMU-2012-05-11035.

MLA Handbook (7^th Edition):

Saeed, Ahmed. “Vibration Suppression and Flywheel Energy Storage in a Drillstring Bottom-Hole-Assembly.” 2012. Web. 18 Jan 2021.

Vancouver:

Saeed A. Vibration Suppression and Flywheel Energy Storage in a Drillstring Bottom-Hole-Assembly. [Internet] [Doctoral dissertation]. Texas A&M University; 2012. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2012-05-11035.

Council of Science Editors:

Saeed A. Vibration Suppression and Flywheel Energy Storage in a Drillstring Bottom-Hole-Assembly. [Doctoral Dissertation]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2012-05-11035

Penn State University

27. Ross, Jacob Wayne. On the Optimization of Composite Flywheel Rotors.

Degree: 2013, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/18997

► Energy storing flywheel rotor technology has yet to be fully optimized given the design possibilities. There have been many design approaches that have been published… (more)

▼ Energy storing flywheel rotor technology has yet to be fully optimized given the design possibilities. There have been many design approaches that have been published over the years, but no overall comparisons of the many manufacturable design options have been put forth. This research increases understanding of how boundary constraints coupled with optimization objective selection can affect optimized designs. This research also compares different design options by searching for the global optimum for all cases investigated: (A) varying the fiber/matrix ratio of each material ring in the composite rotor; (B) including radial fibers in addition to the circumferential fibers for each material ring; (C) co-mingling two fiber materials with a variable ratio in each material ring; (D) material ring press-fitting; and (E) matrix ballasting, where high-density particles can infiltrate the matrix to vary the density, stiffness, and thermal coefficient of expansion within each material ring. The results show that fixing both the outer and inner rotor radii in an optimization search produces a highly restrictive design constraint compared to when at least one of the radii are allowed to vary. The combinations that hold the most promise without producing overly restrictive, trivial, or degenerate solutions are as follows: (1) total stored energy, fixed outer radius, (2) specific energy, fixed outer radius, with a minimum total stored energy constraint. Concerning the design options, (B) has been shown to be a very poor design choice and should not be used. Option (D) has shown to have great potential in maximizing both total stored energy and specific energy, being the single best design option investigated. However, if the inner radius is allowed to vary, the total stored energy can be comparably maximized by combining options (C) and (E). Option (E) was found to be the second best design option with consistent reliability in improving performance. Advisors/Committee Members: Charles E Bakis, Dissertation Advisor/Co-Advisor, Charles E Bakis, Committee Chair/Co-Chair, Renata S Engel, Committee Member, George A Lesieutre, Committee Member, Albert Eliot Segall, Committee Member.

Subjects/Keywords: composite flywheel rotor; CMA-ES; evolutionary optimization; energy storage; press fit; matrix ballast; fiber comingling

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APA (6^th Edition):

Ross, J. W. (2013). On the Optimization of Composite Flywheel Rotors. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/18997

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):

Ross, Jacob Wayne. “On the Optimization of Composite Flywheel Rotors.” 2013. Thesis, Penn State University. Accessed January 18, 2021. https://submit-etda.libraries.psu.edu/catalog/18997.

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

MLA Handbook (7^th Edition):

Ross, Jacob Wayne. “On the Optimization of Composite Flywheel Rotors.” 2013. Web. 18 Jan 2021.

Vancouver:

Ross JW. On the Optimization of Composite Flywheel Rotors. [Internet] [Thesis]. Penn State University; 2013. [cited 2021 Jan 18]. Available from: https://submit-etda.libraries.psu.edu/catalog/18997.

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

Council of Science Editors:

Ross JW. On the Optimization of Composite Flywheel Rotors. [Thesis]. Penn State University; 2013. Available from: https://submit-etda.libraries.psu.edu/catalog/18997

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

Texas A&M University

28. Yeksan, Ahmet Yasin. Transmotor Applications for Electric Vehicles.

Degree: PhD, Electrical Engineering, 2018, Texas A&M University

URL: http://hdl.handle.net/1969.1/173457

► Efficient energy storage and cost-effective solutions are vital for electric vehicle applications. As it is widely known, the battery pack of an electric vehicle is… (more)

▼ Efficient energy storage and cost-effective solutions are vital for electric vehicle applications. As it is widely known, the battery pack of an electric vehicle is a significant component that determines the range and price of the electric vehicle mostly. The recent trend in electric vehicles is using Li-Ion battery packs as the primary energy source. However, Li-Ion battery technology is still immature and its cost is higher than other battery solutions. Although the range of recent electric vehicles has been improved significantly with this recent battery type, their range is still less than conventional vehicles and their market price is almost twice of a gasoline fueled-vehicle. This has brought about new electric powertrain configurations to increase the vehicle energy efficiency. Regenerative braking is a feature that increases the energy efficiency of an electric vehicle by capturing the kinetic energy and storing it in the electrical energy storage unit. This unique feature leads to drive some extra miles with an electric vehicle. However, the round-trip efficiency of the regenerative braking is quite low in applications. The powertrain components in an electric vehicle have more than 90% efficiency values. Improving the efficiency of the electrical machine or the power processor unit would not increase the regenerative braking efficiency because of the overall energy efficiency chain. In addition, regenerative braking has a power limitation that is the rated electrical power. Because of these reasons, if we would like to improve the range of an electric vehicle, we need to increase the regenerative braking capability. Energy form conversions should be avoided and mechanical form of the energy in the vehicle should be kept the same as much as possible. In this study, we introduced a magnetically coupled three-port electric machine, the transmotor. The transmotor consists of two mechanical ports that are decoupled and an electrical port for the power processor unit connection. In vehicle applications, the first mechanical port can be connected wheels. The second mechanical port in the machine can be connected a mechanical energy storage device such as a flywheel. Hence, the structure of the transmotor creates two mechanical paths for the energy exchange. This two-path energy exchange feature can be used to enhance the regenerative braking capability of electric powertrains. We developed a new powertrain configuration for electric vehicles that is called Flywheel Transmotor (FWT) powertrain. Application of the transmotor and a flywheel in an electric powertrain was presented. This new powertrain configuration was applied in a commercial electric vehicle, Nissan Leaf 2012 that is currently in the electric vehicle market. Simulation models were developed for the existing powertrain of the vehicle and flywheel transmotor powertrain. Standard drive cycles were used to run simulations. Simulation results of the new powertrain configuration were presented and compared with the conventional Nissan Leaf 2012… Advisors/Committee Members: Ehsani, Mehrdad (advisor), Balog, Robert S (committee member), Bhattacharyya, Shankar P (committee member), Palazzolo, Alan B (committee member).

Subjects/Keywords: Transmotor; electric vehicles: flywheel; energy storage; dual mechanical port machines; power buffer

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

APA (6^th Edition):

Yeksan, A. Y. (2018). Transmotor Applications for Electric Vehicles. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/173457

Chicago Manual of Style (16^th Edition):

Yeksan, Ahmet Yasin. “Transmotor Applications for Electric Vehicles.” 2018. Doctoral Dissertation, Texas A&M University. Accessed January 18, 2021. http://hdl.handle.net/1969.1/173457.

MLA Handbook (7^th Edition):

Yeksan, Ahmet Yasin. “Transmotor Applications for Electric Vehicles.” 2018. Web. 18 Jan 2021.

Vancouver:

Yeksan AY. Transmotor Applications for Electric Vehicles. [Internet] [Doctoral dissertation]. Texas A&M University; 2018. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/1969.1/173457.

Council of Science Editors:

Yeksan AY. Transmotor Applications for Electric Vehicles. [Doctoral Dissertation]. Texas A&M University; 2018. Available from: http://hdl.handle.net/1969.1/173457

University of Edinburgh

29. Sabihuddin, Siraj. Investigation of diamagnetic bearings and electrical machine materials for flywheel energy storage applications.

Degree: PhD, 2018, University of Edinburgh

URL: http://hdl.handle.net/1842/28957

► Recent trends in energy production have led to a renewed interest in improving grid level energy storage solutions. Flywheel energy storage is an attractive option… (more)

▼ Recent trends in energy production have led to a renewed interest in improving grid level energy storage solutions. Flywheel energy storage is an attractive option for grid level storage, however, it suffers from high parasitic loss. This study investigates the extent to which passive diamagnetic bearings, a form of electromagnetic bearing, can help reduce this parasitic loss. Such bearings require three main components: a weight compensation mechanism (lifter-floater), a stabilizing mechanism and an electrical machine. This study makes use of a new radial modification of an existing linear multi-plattered diamagnetic bearing. Here a prototype is built and analytical expressions derived for each of the three main components. These expressions provide a method of estimating displacements, fields, forces, energy and stiffness in the radial diamagnetic bearing. The built prototype solution is found to lift a 30 [g] mass using six diamagnetic platters for stabilization (between ring magnets) with a disc lifter and spherical floater for weight compensation. The relationship between mass and number of platters was found to be linear, suggesting that, up to a point, increases in mass are likely possible and indicating that significant potential exists for these bearings where high stiffness is not needed – for instance in flywheel energy storage. The study examines methods of reducing bearing (parasitic) losses and demonstrates that losses occur in three main forms during idling: air-friction losses, electrical machine losses, stabilizing machine losses. Low speed (158 [rpm]) air-friction losses are found to be the dominant loss at 0.1 [W/m3]. The focus of this study, however, is on loss contributions resulting from the bearing’s electrical machine and stabilizing machine. Stabilizing machine losses are found to be very low at: 1 × 10−6 [W/m3] – this leaves electrical machine losses as the dominant loss. Such electrical machine losses are analysed and divided into eddy current loss and hysteresis loss. Two components of hysteresis loss are remanent field related cogging loss and remagetization loss. Eddy current losses in silicon steel laminations in an electrical machine are quite high, especially at high speeds, with losses in the order of 1 × 105 [W/m3]. Noting the further high cost of producing single unit quantities of custom lamination-based electrical machine prototypes, this high loss prompts a look at potentially lower cost ferrite materials for building these machines. A commercial sample of soft magnetite ferrite is shown to have equivalent eddy current losses of roughly 1 × 10−13 [W/m3]. The study notes that micro-structured magnetite has significant hysteresis loss. Such loss is in the order of 1 × 10−3 [W/m3] when referring to both remanence related cogging and remagnetization. This study, thus, extends its examination of loss to nano-structured magnetite. Magnetite nano-particles have shown superparamagnetic (no hysteresis) behaviour that promises the elimination of hysteresis losses. A co-precipitation route…

Subjects/Keywords: Flywheel Energy Storage; friction; levitation; diamagnetic materials; energy loss; hysteresis; nano-materials

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

APA (6^th Edition):

Sabihuddin, S. (2018). Investigation of diamagnetic bearings and electrical machine materials for flywheel energy storage applications. (Doctoral Dissertation). University of Edinburgh. Retrieved from http://hdl.handle.net/1842/28957

Chicago Manual of Style (16^th Edition):

Sabihuddin, Siraj. “Investigation of diamagnetic bearings and electrical machine materials for flywheel energy storage applications.” 2018. Doctoral Dissertation, University of Edinburgh. Accessed January 18, 2021. http://hdl.handle.net/1842/28957.

MLA Handbook (7^th Edition):

Sabihuddin, Siraj. “Investigation of diamagnetic bearings and electrical machine materials for flywheel energy storage applications.” 2018. Web. 18 Jan 2021.

Vancouver:

Sabihuddin S. Investigation of diamagnetic bearings and electrical machine materials for flywheel energy storage applications. [Internet] [Doctoral dissertation]. University of Edinburgh; 2018. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/1842/28957.

Council of Science Editors:

Sabihuddin S. Investigation of diamagnetic bearings and electrical machine materials for flywheel energy storage applications. [Doctoral Dissertation]. University of Edinburgh; 2018. Available from: http://hdl.handle.net/1842/28957

Linköping University

30. Romeling, Gustav. Improving Misfire Detection Using Gaussian Processes and Flywheel Error Compensation.

Degree: Vehicular Systems, 2016, Linköping University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-132721

► The area of misfire detection is important because of the effects of misfires on both the environment and the exhaust system. Increasing requirements on… (more)

Subjects/Keywords: Misfire detection; Gaussian processes; Multiple misfires; Flywheel tooth angle errors; EKF; SVM; Control Engineering; Reglerteknik

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

APA (6^th Edition):

Romeling, G. (2016). Improving Misfire Detection Using Gaussian Processes and Flywheel Error Compensation. (Thesis). Linköping University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-132721

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):

Romeling, Gustav. “Improving Misfire Detection Using Gaussian Processes and Flywheel Error Compensation.” 2016. Thesis, Linköping University. Accessed January 18, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-132721.

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

MLA Handbook (7^th Edition):

Romeling, Gustav. “Improving Misfire Detection Using Gaussian Processes and Flywheel Error Compensation.” 2016. Web. 18 Jan 2021.

Vancouver:

Romeling G. Improving Misfire Detection Using Gaussian Processes and Flywheel Error Compensation. [Internet] [Thesis]. Linköping University; 2016. [cited 2021 Jan 18]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-132721.

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

Council of Science Editors:

Romeling G. Improving Misfire Detection Using Gaussian Processes and Flywheel Error Compensation. [Thesis]. Linköping University; 2016. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-132721

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

Open Access Theses and Dissertations