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Dissertations / Theses on the topic 'Energy storage flywheel'

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Published: 4 June 2021

Last updated: 1 February 2022

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1

Janse, van Rensburg Petrus J. "Energy storage in composite flywheel rotors." Thesis, Stellenbosch : Stellenbosch University, 2011. http://hdl.handle.net/10019.1/17864.

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Thesis (MScEng)--Stellenbosch University, 2011.<br>ENGLISH ABSTRACT: As the push continues for increased use of renewables on the electricity grid, the problem of energy storage is becoming more urgent than ever. Flywheels with wound, composite rotors represent an efficient and environmentally friendly option for energy storage. They have already been applied successfully for voltage control on electrical rail networks and for bridging power in backup UPS systems, but lately they have also proven useful for grid-scale frequency regulation. For flywheels to be deployed on a wider scale, t

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2

Östergård, Rickard. "Flywheel energy storage : a conceptucal study." Thesis, Uppsala universitet, Elektricitetslära, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-164500.

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This master thesis was provided by ABB Cooperate Research in Västerås. This study has two major purposes: (1) to identify the characteristics of a flywheel energy storage system (FESS), (2) take the first steps in the development of a simulation model of a FESS. For the first part of this master thesis a literature reviews was conducted with focus on energy storage technologies in general and FESS in particular. The model was developed in the simulation environment PSCAD/EMTDC; with the main purpose to provide working model for future studies of the electrical dynamics of a flywheel energy s

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3

Read, Matthew. "Flywheel energy storage systems for rail." Thesis, Imperial College London, 2010. http://hdl.handle.net/10044/1/6451.

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In current non-electrified rail systems there is a significant loss of energy during vehicle braking. The aim of this research has been to investigate the potential benefits of introducing onboard regenerative braking systems to rail vehicles. An overview of energy saving measures proposed within the rail industry is presented along with a review of different energy storage devices and systems developed for both rail and automotive applications. Advanced flywheels have been identified as a candidate energy storage device for rail applications, combining high specific power and energy. In order

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4

Brunmark, Filip, Louie Sterin, Yafet Suleman, and Groucho Zimmermann. "A mechanical analysis of a flywheel as an energy storage system." Thesis, Uppsala universitet, Institutionen för materialvetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-446481.

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This report is a theoretical analysis of high inertia flywheels. Four different flywheel shapes are studied and essential parameters for designing flywheels with optimal energy storage capabilities are discussed. This was done by compiling theoretical findings and presenting these in a way relevant for energy storage applications. Aligning the systems principal axis parallel to the earth’s axis of rotation creates even loads upon the bearings, maximizing lifespan. A flywheel with large outer radius and a thin rim allows for maximum energy storage.

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5

Leuschke, Rainer. "Motor integrated actuation for a flywheel energy storage system /." Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/7113.

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6

Neumann, Robert James. "Lifetime analysis of a composite flywheel energy storage system." Thesis, Queen Mary, University of London, 2001. http://qmro.qmul.ac.uk/xmlui/handle/123456789/26689.

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This thesis is concentrated on the long-term fracture of thick unidirectional glass and carbon fibre composites subjected to transverse stress. The objective was to develop a methodology for predicting the long term lifetime of a composite rotor used as part of a flywheel based energy storage system. The flywheel design is based on accommodating high hoop stresses induced during the high speed rotation. However, the different Poisson's ratios of the constituent materials in the rotor result in a complex stress distribution with significant stresses introduced in a direction transverse to the f

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7

Greigarn, Tipakorn. "Mitigating Wind Power Fluctuation Using Flywheel Energy Storage Systems." Case Western Reserve University School of Graduate Studies / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=case1296591556.

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8

Stienmier, J. David. "Contributions to the development of a flywheel energy storage system /." Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/7098.

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9

Ho, Tracey 1976. "High-speed permanent magnet motor generator for flywheel energy storage." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/80068.

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Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.<br>Includes bibliographical references (p. 139).<br>by Tracey Chui Ping Ho.<br>S.B.and M.Eng.

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10

Dhand, Aditya. "Design of electric vehicle propulsion system incorporating flywheel energy storage." Thesis, City University London, 2015. http://openaccess.city.ac.uk/13699/.

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Battery electric vehicles are crucial for moving towards a zero emission transport system. Though battery electric vehicle technology has been rapidly improving, it is still not competitive to the conventional vehicles in terms of both cost and performance. The limited driving range and high cost are significant impediments to the popularity of battery electric vehicles. The battery is the main element which affects the range and cost of the vehicle. The battery has to meet the requirements of sufficient power and energy, quick recharge, safety, low cost and sufficient life. However the batter

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11

Hai, Xin Flowers George T. "Design optimization and health monitoring for multi-directional composite flywheel energy storage systems." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Summer/Dissertations/HAI_XIN_18.pdf.

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12

Talebi, Rafsanjan Salman. "Advanced high-speed flywheel energy storage systems for pulsed power application." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-3163.

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13

Zhang, Ju. "Development of a power electronics for a flywheel energy storage system." Thesis, Virginia Tech, 1995. http://hdl.handle.net/10919/40640.

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The development of a power electronic circuitry for a flywheel energy storage system is discussed in the following aspects. First, due to the nature of permanent magnet brushless DC motor/generator, the operation of three-phase voltage source inverter/rectifier can be simplified to that of a bi-directional DC-DC converter, allowing the use of mostly analog control. Second, there is a problem associated with the existing six-step brushless DC motor/generator control in the generator mode. A twelve-step control scheme is proposed to solve this problem. Third, high-switching frequency is necessar

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14

Okou, Richard. "High Speed flywheel and test rig design for rural energy storage." Doctoral thesis, University of Cape Town, 2010. http://hdl.handle.net/11427/5130.

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There is considerable growth in the renewable energy sector to contribute to sustainable development, environmental conservation and most importantly to provide affordable energy to isolated rural communities of sub-Saharan Africa. Renewable energy sources such as solar and wind require energy storage since the source of energy is intermittent. Electrochemical batteries especially from lead acid are commonly used to store energy in Solar Home Systems (SHS) for rural electrification in sub-Saharan Africa. Disadvantages such as low efficiencies, low life cycle costs, high maintenance, comparativ

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15

Coonick, Alun Howard. "Dynamic aspects of a wind/diesel system with flywheel energy storage." Thesis, Imperial College London, 1991. http://hdl.handle.net/10044/1/46726.

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16

Helkin, Steven Alexander. "Design and optimization of a wave energy harvester utilizing a flywheel energy storage system." Master's thesis, University of Central Florida, 2011. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4774.

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This thesis details the design and optimization of a buoy used to collect renewable energy from ocean waves. The proposed buoy is a point absorber--a device that transforms the kinetic energy of the vertical motion of surface waves into electrical energy. The focus of the research is on the mechanical system used to collect the energy, and methods to improve it for eventual use in an actual wave energy harvester. A flywheel energy storage system was utilized in order to provide an improved power output from the system, even with the intermittent input of force exerted by ocean waves. A series

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17

Abrahamsson, Johan. "Kinetic Energy Storage and Magnetic Bearings : for Vehicular Applications." Doctoral thesis, Uppsala universitet, Elektricitetslära, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-212106.

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One of the main challenges in order to make electric cars competitive with gas-powered cars is in the improvement of the electric power system. Although many of the energy sources currently used in electric vehicles have sufficientlyhigh specific energy, their applicability is limited due to low specific power. It would therefore be advantageous to create a driveline with the main energy storage separated from a smaller energy buffer, designed to have high power capabilities and to withstand frequent and deep discharge cycles. It has been found that rotating kinetic energy storage in flywheels

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18

Asbach-Cullen, Richard Carl. "Electrical versus mechanical interfacing of flywheel energy storage in wind diesel systems." Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339095.

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19

Wright, Derek Thomas. "Magnetic suspension systems, motor/generators and power electronics for flywheel energy storage." Thesis, University of Sussex, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.412659.

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A flywheel energy store comprises a motor/generator driving a flywheel where the noload losses are reduced so that half of the stored energy remains available after six hours of coasting. Analysis of the permitted level of losses is followed by discussion of how the losses can be minimised. The merits of induction and permanent magnet machines are compared in terms of their coasting losses. There is discussion of zero-power magnetic bearing systems developed to suspend vertical-axis energy-storage flywheels. With permanent magnet material in the magnetic circuit, an electronic control system c

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20

Hussien, Zahrul Faizi. "Current control of three-phase PWM Inverter for flywheel energy storage system." Thesis, University of Southampton, 2000. https://eprints.soton.ac.uk/47946/.

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The thesis is concerned with the use of flywheel energy storage system (FESS) in utility load levelling application. The work presented consists of two parts, first, an evaluation of utility load levelling schemes with FESS as the energy storage medium, and second, the development of power electronic interface of FESS to the utility. The thesis presents a study to evaluate FESS load levelling schemes in a UK electricity supply and distribution company. It identifies and quantifies the costs and benefits of the schemes, and carries out a financial appraisal based on Net Present Value (NPV) and

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21

Conteh, Michael Abu. "ENHANCEMENT OF HIGH-SPEED FLYWHEEL ENERGY STORAGE VIA CARBON-FIBER COMPOSITE REINFORCEMENT." OpenSIUC, 2016. https://opensiuc.lib.siu.edu/dissertations/1191.

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This study on the enhancement of high-speed flywheel energy storage is to investigate composite materials that are suitable for high-speed, high-energy density for energy storage and/or energy recovery. The main motivation of the study is to explore the application of the flywheel in the aviation industry for recovering some of the energy that is currently being lost at the wheel brakes of an aircraft due to the high temperature developed in the brake stack as a result of landing, frequent brake applications during taxiing in or out of heavy traffic airports and rejected take-off. Lamina an

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22

Lundin, Johan. "Flywheel in an all-electric propulsion system." Licentiate thesis, Uppsala universitet, Elektricitetslära, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-222030.

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Energy storage is a crucial condition for both transportation purposes and for the use of electricity. Flywheels can be used as actual energy storage but also as power handling device. Their high power capacity compared to other means of storing electric energy makes them very convenient for smoothing power transients. These occur frequently in vehicles but also in the electric grid. In both these areas there is a lot to gain by reducing the power transients and irregularities. The research conducted at Uppsala university and described in this thesis is focused on an all-electric propulsion sy

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23

McArdle, John Malachy. "Flywheel energy storage and retrieval for support of power system frequency under generation fault conditions." Thesis, Queen's University Belfast, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335518.

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24

Sabihuddin, Siraj. "Investigation of diamagnetic bearings and electrical machine materials for flywheel energy storage applications." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/28957.

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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 mu

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25

Schaible, Uwe. "An integrated high speed flywheel energy storage system for peak power transfer in electric vehicles /." *McMaster only, 1997.

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26

Aucamp, Christiaan Daniël. "Model predictive control of a magnetically suspended flywheel energy storage system / Christiaan Daniël Aucamp." Thesis, North-West University, 2012. http://hdl.handle.net/10394/8601.

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The goal of this dissertation is to evaluate the effectiveness of model predictive control (MPC) for a magnetically suspended flywheel energy storage uninterruptible power supply (FlyUPS). The reason this research topic was selected was to determine if an advanced control technique such as MPC could perform better than a classical control approach such as decentralised Proportional-plus-Differential (PD) control. Based on a literature study of the FlyUPS system and the MPC strategies available, two MPC strategies were used to design two possible MPC controllers were designed for the FlyUPS, na

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27

Samuel, Durair Raj Kingsly Jebakumar. "Modeling, Control and Prototyping of Alternative Energy Storage Systems for Hybrid Vehicles." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1331140529.

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28

Schaible, Uwe. "An integrated high-speed flywheel energy storage system for peak power transfer in electric vehicles." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0003/NQ42763.pdf.

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29

Li, Xing [Verfasser], Andreas [Akademischer Betreuer] Binder, and Christian [Akademischer Betreuer] Mittelstedt. "Evaluation and Design of a Flywheel Energy Storage System / Xing Li ; Andreas Binder, Christian Mittelstedt." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2019. http://d-nb.info/1201482135/34.

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30

Svensson, Henrik. "Pre-Study for a Battery Storage for a Kinetic Energy Storage System." Thesis, Uppsala universitet, Elektricitetslära, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-249173.

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This bachelor thesis investigates what kind of battery system that is suitable for an electric driveline equipped with a mechanical fly wheel, focusing on a battery with high specific energy capacity. Basic battery theory such as the principle of an electrochemical cell, limitations and C-rate is explained as well as the different major battery systems that are available. Primary and secondary cells are discussed, including the major secondary chemistries such as lead acid, nickel cadmium (NiCd), nickel metal hydride (NiMH) and lithium ion (Li-ion). The different types of Li-ion chemistries ar

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31

Karrari, Shahab [Verfasser], and M. [Akademischer Betreuer] Noe. "Integration of Flywheel Energy Storage Systems in Low Voltage Distribution Grids / Shahab Karrari ; Betreuer: M. Noe." Karlsruhe : KIT-Bibliothek, 2021. http://d-nb.info/1238147925/34.

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32

Alexander, BXS. "ROTOR POSITION AND VIBRATION CONTROL FOR AEROSPACE FLYWHEEL ENERGY STORAGE DEVICES AND OTHER VIBRATION BASED DEVICES." Cleveland State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=csu1218818393.

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33

Janse, van Rensburg Jan Jacobus. "Development of a flywheel energy storage system : uninterrupted power supply (FLY-UPS) / Jan Jacobus Janse van Rensburg." Thesis, North-West University, 2007. http://hdl.handle.net/10394/2322.

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The School of Electrical, Electronic and Computer Engineering is in the process of establishing an active magnetic bearing (AMB) and high speed permanent magnet synchronous machine (PMSM) laboratory. This is done to gain knowledge on AMB, flywheel and high speed PMSM technologies. Some of the advantages of using AMBs are: no mechanical wear or friction, no need for lubrication, active vibration control and unbalance compensation. This project’s purpose is the development of an AMB suspended flywheel energy storage system. This system should be able to store energy for a certain period with min

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34

McDonough, Joshua. "System Dynamics Modeling and Development of a Design Procedure for Short-term Alternative Energy Storage Systems." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1308287500.

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35

Kamf, Tobias. "High speed flywheel design : Using advanced composite materials." Thesis, Uppsala universitet, Elektricitetslära, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-181256.

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This thesis is a part of a larger project that focuses on the development of a highspeed, high energy flywheel using both high-tech composites and levitating magneticbearings alongside a custom made, permanent magnetized generator built into theflywheel itself. The goal of the project is then to integrate this flywheel into anelectrical vehicle.The main focus of this thesis is the composite material. The composite is to be usedas a shell around the flywheel rotor. This composite shell fills two purposes. The firstis to act as the main energy carrying material, storing above 75% of the total en

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36

Martinez-Gonzalez, Pablo. "A study on the integration of a high-speed flywheel as an energy storage device in hybrid vehicles." Thesis, Imperial College London, 2010. http://hdl.handle.net/10044/1/6082.

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The last couple of decades have seen the rise of the hybrid electric vehicle as a compromise between the outstanding specific energy of petrol fuels and its low-cost technology, and the zero tail-gate emissions of the electric vehicle. Despite this, considerable reductions in cost and further increases in fuel economy are needed for their widespread adoption. An alternative low-cost energy storage technology for vehicles is the high-speed flywheel. The flywheel has important limitations that exclude it from being used as a primary energy source for vehicles, but its power characteristics and l

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37

Rotthäuser, Siegfried, Wilhelm Hagemeister, and Harald Pott. "Pressure Pulse Generation with Energy Recovery." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-200010.

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The Pressure Impulse test-rig uses the principal energetic advantages of displacementcontrolled systems versus valve-controlled systems. The use of digital-control technology enables a high dynamic in the pressure curve, according to the requirements of ISO6605. Accumulators, along with inertia, make energy recovery possible, as well as, enabling the compression energy to be re-used. As a result of this, there is a drastic reduction in operating costs. A simulation of the system before starting the project allows the development risks to be calculated and the physically achievable performance

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38

Li, Shengming. "The development and implementation of an advanced power electronics converter and electric machine control technology for flywheel energy storage system applications /." The Ohio State University, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486462067843111.

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Ripoll, Masferrer Lluís. "Análisis y diseño de volantes de inercia de materiales compuestos." Doctoral thesis, Universitat Politècnica de Catalunya, 2006. http://hdl.handle.net/10803/6415.

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Los volantes de inercia superan a las baterías eléctricas por su capacidad de absorber y ceder energía en poco tiempo y, si se fabrican con materiales compuestos, también por su reducido peso. La tesis presenta un estudio sobre los rotores de materiales compuestos aplicados a los acumuladores cinéticos para hacerlos más asequibles a usos industriales baratos. Para ello se proponen dos objetivos: obtener un sistema analítico de cálculo, y mejorar el diseño de rotores de bajo coste.<br/>Se desarrolla un sistema analítico de cálculo muy completo, tanto en las cargas como en las tensiones. Se cons

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Lashway, Christopher R. "Resilient and Real-time Control for the Optimum Management of Hybrid Energy Storage Systems with Distributed Dynamic Demands." FIU Digital Commons, 2017. https://digitalcommons.fiu.edu/etd/3515.

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A continuous increase in demands from the utility grid and traction applications have steered public attention toward the integration of energy storage (ES) and hybrid ES (HESS) solutions. Modern technologies are no longer limited to batteries, but can include supercapacitors (SC) and flywheel electromechanical ES well. However, insufficient control and algorithms to monitor these devices can result in a wide range of operational issues. A modern day control platform must have a deep understanding of the source. In this dissertation, specialized modular Energy Storage Management Controllers (E

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41

Fells, Graham. "Digital signal processor based magnetic bearing controllers for energy storage flywheels." Thesis, University of Sussex, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.424399.

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42

Carlin, Marc J. (Marc Joseph). "Design of a high-speed motor-alternator for flywheele energy storage systems." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/43532.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.<br>Includes bibliographical references (p. 149-150).<br>by Marc J. Carlin.<br>M.Eng.

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Hearn, Clay Stephen. "Design methodologies for advanced flywheel energy storage." 2013. http://hdl.handle.net/2152/23032.

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Higher penetration of volatile renewable sources and increasing load demand are putting a strain on the current utility grid structure. Energy storage solutions are required to maintain grid stability and are vital components to future smart grid designs. Flywheel energy storage can be a strong part of the solution due to high cycle life capabilities and flexible design configurations that balance power and energy capacity. This dissertation focuses on developing design methodologies for advanced flywheel energy storage, with an emphasis on sizing flywheel energy storage and developing lump

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Lin, Keng-Hsien, and 林庚賢. "A study of flywheel energy storage system." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/50025808224798349525.

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碩士<br>國立勤益科技大學<br>資訊與電能科技研究所<br>95<br>Hi-tech industry has become a necessary trend of industry development in Taiwan. However, despite of the research and development technology, the instability of power system will cause serious influence on both producing efficiency and amount of the Hi-tech industry. Therefore, supplied by stable power is a very important link to the basis of Hi-tech industry. For this idea, the study provides flywheel storage uninterruptible power supply. At first, we aimed at the flywheel energy storage system (FESS) and simulated the storage effect of FESS. Measure the

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Zhang, Xiaohua. "Vibration Isolation of a Locomotive Mounted Energy Storage Flywheel." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7528.

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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 at Texas A&M. This thesis focuses on the motion analysis of a locomotive mounted energy storage flywheel system for a variety of support motion inputs. Two input cases, sinusoidal floor input and ramp input, are analyzed in different sections. Simulation results and methods of ensuring the operating success of the flywheel system are provided at the end of each section. Section 1 introduces the problem and method being used

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Hsieh, Chi-Ting, and 謝季廷. "The Design and Analysis of Flywheel Energy Storage System." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/35137443249491831193.

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碩士<br>大葉大學<br>機械與自動化工程學系<br>103<br>Flywheel, one of oldest invention of human being, has been known for thousands of years in various forms of applications. Flywheel energy storage system, also known as flywheel battery. The complete energy storage system consists of flywheel rotor, motor/generator, magnetic bearing, housing and power transformation electronic, etc. The Most of the research efforts focus on the shape design and new material development of the flywheel seeking higher energy storage capability. Energy density of a flywheel is dependent on the flywheel shape design and on the m

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47

Li, Xing. "Evaluation and Design of a Flywheel Energy Storage System." Phd thesis, 2019. https://tuprints.ulb.tu-darmstadt.de/9461/1/2019-09-24_Li_Xing.pdf.

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This thesis deals with the energetic evaluation and design of a flywheel energy storage system (FESS). The first purpose is to give a quantitative evaluation of the energetic performance of the systems equipped with flywheels. Two systems are chosen: one 5 kWp (kWp: peak power) household PV system equipped with a 3 kWh flywheel to accumulate the excessive energy generation in daytime, and one tramway power system equipped with a 1.5 kWh onboard flywheel to accumulate the recovered braking energy. The energy saving potential of each system is analyzed based on the given profiles and the modeled

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SHAW, YEA-DIH, and 邵亞棣. "Composite Rotor Structural Design for Flywheel Energy Storage Systems." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/48795445218608103906.

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碩士<br>大葉大學<br>工具機產業碩士學位學程<br>104<br>A flywheel rotor design and analysis is with metal hub and composite rim. The analysis is used finite element method for static structure. On rotating speed 20000rpm, the verify prototype models are designed to reach 2 kw．h for storage energy. The flywheel rotor design of best prototype model is selected to reach the highest energy density. On different rotating speed, the stress distributions of the flywheel rotor are discussed. Under the limit of allowed stress, the highest energy density is found. The optimum flywheel rotor of the best prototype model is

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Chao, Yu-Ting, and 趙育廷. "Charging and Position Sensorless Control of the Flywheel Energy Storage System." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/z622ne.

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碩士<br>國立中正大學<br>電機工程研究所<br>102<br>In the flywheel energy storage, the electrical energy is converted into the kinetic energy by making the flywheel spin nonstop in the vacuum. This thesis develops the flywheel energy storage system. The hardware consists of a permanent magnetic synchronous motor, a three-phase three-wire inverter, a flyback and the peripheral circuits of the micro-controller. The online parameter identification, the sensorless control and the current control are introduced in this thesis. The motor parameters are measured by the LCR meter to verify the online parameter identif

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Lu, Po-Yu, and 陸柏伃. "Active Magnetic Bearing Flywheel Energy Storage System MATLAB/ SimMechanics Model Development." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/84044112328738541907.

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碩士<br>國立屏東科技大學<br>機械工程系所<br>101<br>This study builds a MATLAB / SimMechanics active magnetic bearing flywheel energy storage system model with the capability to analyze the sys -tem stability and anti-jamming sensitivity. It can facilitate magnetic bearing flywheel rapid development of a new prototype. This study uses MATLAB / SimMechanics model to construct a five DOF rigid magnetic bearing fly- wheel; further sensitivity analysis using several inertia ratio flywheel rotor model to analyze the system stability and its anti- jamming effect. The results show that the magnetic bearing control sy

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