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Teses / dissertações sobre o tema "Superconducting magnet energy storage"

Autor: Grafiati
Publicado: 25 de julho de 2024
Última modificação: 31 de julho de 2025

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1

Varghese, Philip. "Magnet design considerations for superconductive magnetic energy storage." Diss., This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-02052007-081238/.

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2

Kumar, Prem. "Applications of superconducting magnetic energy storage systems in power systems." Thesis, Virginia Tech, 1989. http://hdl.handle.net/10919/44118.

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A Superconducting Magnetic Energy Storage (SMES) system is a very efficient storage device capable of storing large amounts of energy. The primary applications it has been considered till now are load-leveling and system stabilization.This thesis explores new applications/benefits of SMES in power systems. Three areas have been identified. â ¢ Using SMES in conjunction with PV systems.SMES because of their excellent dynamic response and PV being an intermittent source complement one another.A scheme for this hybrid system is developed and simulation done accordingly. Using SMES in an Asynchr
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3

Hawley, Christopher John. "Design and manufacture of a high temperature superconducting magnetic energy storage device." Access electronically, 2005. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20060508.143200/index.html.

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4

Yuan, Weijia. "Second-generation high-temperature superconducting coils and their applications for energy storage." Thesis, University of Cambridge, 2010. https://www.repository.cam.ac.uk/handle/1810/229754.

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Since a superconductor has no resistance below a certain temperature and can therefore save a large amount of energy dissipated, it is a 'green' material by saving energy loss and hence reducing carbon emissions. Recently the massive manufacture of high-temperature superconducting (HTS) materials has enabled superconductivity to become a preferred candidate to help generation and transportation of cleaner energy. One of the most promising applications of superconductors is Superconducting Magnetic Energy Storage (SMES) systems, which are becoming the enabling engine for improving the capacity,
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5

Superczynski, Matthew J. "Analysis of the Power Conditioning System for a Superconducting Magnetic Energy Storage Unit." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/34860.

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Superconducting Magnetic Energy Storage (SMES) has branched out from its application origins of load leveling, in the early 1970s, to include power quality for utility, industrial, commercial and military applications. It has also shown promise as a power supply for pulsed loads such as electric guns and electromagnetic aircraft launchers (EMAL) as well as for vital loads when power distribution systems are temporarily down. These new applications demand more efficient and compact high performance power electronics. A 250 kW Power Conditioning System (PCS), consisting of a voltage source c
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6

Yunus, A. M. Shiddiq. "Application of SMES Unit to improve the performance of doubly fed induction generator based WECS." Thesis, Curtin University, 2012. http://hdl.handle.net/20.500.11937/1450.

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Due to the rising demand of energy over several decades, conventional energy resources have been continuously and drastically explored all around the world. As a result, global warming is inevitable due to the massive exhaust of CO2 into the atmosphere from the conventional energy sources. This global issue has become a high concern of industrial countries who are trying to reduce their emission production by increasing the utilization of renewable energies such as wind energy. Wind energy has become very attractive since the revolution of power electronics technology, which can be equipped wi
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7

Arsoy, Aysen. "Electromagnetic Transient and Dynamic Modeling and Simulation of a StatCom-SMES Compensator in Power Systems." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/27225.

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Electromagnetic transient and dynamic modeling and simulation studies are presented for a StatCom-SMES compensator in power systems. The transient study aims to better understand the transient process and interaction between a high power/high voltage SMES coil and its power electronics interface, dc-dc chopper. The chopper is used to attach the SMES coil to a StatCom. Following the transient study, the integration of a StatCom with SMES was explored to demonstrate the effectiveness of the combined compensator in damping power oscillations. The transient simulation package PSCAD/EMTDC has been
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8

Nielsen, Knut Erik. "Superconducting magnetic energy storage in power systems with renewable energy sources." Thesis, Norwegian University of Science and Technology, Department of Electrical Power Engineering, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-10817.

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<p>The increasing focus on large scale integration of new renewable energy sources like wind power and wave power introduces the need for energy storage. Superconducting Magnetic Energy Storage (SMES) is a promising alternative for active power compensation. Having high efficiency, very fast response time and high power capability it is ideal for levelling fast fluctuations. This thesis investigates the feasibility of a current source converter as a power conditioning system for SMES applications. The current source converter is compared with the voltage source converter solution from the pro
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9

Li, Jianwei. "Design and assessment of the superconducting magnetic energy storage and the battery hybrid energy storage system." Thesis, University of Bath, 2017. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.760945.

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10

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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11

Shirai, Yasuyuki. "STUDIES ON POWER SYSTEM CHARACTERISTICS OF SUPERCONDUCTING MAGNETIC ENERGY STORAGE." Kyoto University, 1988. http://hdl.handle.net/2433/74715.

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12

Ciceron, Jérémie. "Superconducting magnetic energy storage with second-generation high temperature superconductors." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAT012/document.

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En chargeant en courant une inductance supraconductrice, on stock de l’énergie magnétique. Ce principe est appelé SMES pour Superconducting Magnetic Energy Storage. Ce type de dispositifs a une densité d’énergie relativement faible mais peut avoir une densité de puissance élevée. Cette thèse s’inscrit dans le cadre du projet BOSSE, qui vise à mettre au point un démonstrateur de SMES dans la gamme du MJ. Ce SMES sera à la fois plus compacte que ses prédécesseurs et battra le record actuel d’énergie spécifique d’un bobinage supraconducteur en atteignant 20 kJ/kg. Cet objectif sera atteint grâce
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13

Bowers, Brian J. (Brian Jeffrey). "Integrated cryogenic refrigeration system design for superconducting magnetic energy storage systems." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/42681.

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14

Zheng, David Z. "Impacts of superconducting magnetic energy storage unit on power system stability." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-07112009-040323/.

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15

Salih, Embaiya. "Superconducting magnetic energy storage for power system stability and quality enhancement." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2018. https://ro.ecu.edu.au/theses/2084.

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The stability of power systems has become the most critical issue affecting their quality and performance. Concerns over climate change are now moving the energy sector into a new era of modern power grids. To sustain the reliable operation of power systems and improve the quality of power generation, several instability issues that affect the quality of the operation of power systems are addressed in this thesis. The first is the fluctuations in generated power due to variations in wind velocity in wind power systems. The fluctuation in the wind, which is the main energy source in a wind powe
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16

Celanovic, Nikola. "Space Vector Modulation and Control of Multilevel Converters." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/29164.

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This dissertation is the result of research and development of a power conditioning system for Superconductive Magnetic Energy Storage System. The dominant challenge of this research was to develop the power conditioning system that can match slowly varying dc voltage and dc current on the super conductive magnet side with the ac voltages and ac currents on the utility side. At the same time the power conditioning system was required to provide a bi-directional power flow to the superconductive magnet. The focus of this dissertation is a three-level diode clamped dc-ac converter which is a
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17

Takashima, Yoshifumi, Takashi Yamane, Yoshikazu Takeda, et al. "Nagoya University Photo-Science Nanofactory Project." American Institite of Physics, 2007. http://hdl.handle.net/2237/11989.

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18

Jagau, Hartmut. "Design of a permanent magnet generator for a sustainable wind energy capture and storage system." Master's thesis, University of Cape Town, 2011. http://hdl.handle.net/11427/12436.

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Includes bibliographical references<br>The main objective of this dissertation is the detailed design, sizing, analysis and experimental validation of the sustainable wind generator. The proposed machine topology for the generator uses permanent magnets (PMs) from discarded hard disk drives (HDDs). The PM configuration inherently produces a non-uniform air gap flux-density distribution and the pole pitches of the PMs are relatively small. This would result to an unbalanced generator output and a number of stator inter-connecting leads, if conventional tooth-concentrated non-overlapping winding
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19

Kvarnström, Joakim. "Increasing the efficiency of the CERN accelerators by use of Superconducting Magnetic Energy Storage (SMES)." Thesis, Uppsala universitet, FREIA, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-450949.

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This report explains how an SMES is operated and how SMES systems could be used to increase the efficiency of the CERN Large Hadron Collider (LHC) and the Future Circular Collider (FCC) as well as to reduce the very high power needs of a future Muon Collider (MC). The performance of SMES for other applications and late developments of the technique will also be described.
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20

Pal, Bikash Chandra. "Robust damping control of inter-area oscillations in power systems with superconducting magnetic energy storage devices." Thesis, Imperial College London, 1999. http://hdl.handle.net/10044/1/7179.

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21

Gaudron, Duflos Bénédicte. "Stabilisation de l'alternateur entièrement supraconducteur par un régulateur a bobine supraconductrice de stockage d'énergie." Vandoeuvre-les-Nancy, INPL, 1993. http://www.theses.fr/1993INPL004N.

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Cette thèse traite du problème de la stabilisation de l'alternateur entièrement supraconducteur dimensionné en minimisant le volume de supraconducteur utilisé. La stabilité de cet alternateur est étudiée aussi bien analytiquement en calculant les pôles des fonctions de transfert que lors des défauts de court-circuit et de report de charge définis par le cahier des charges d'électricité de France. Un premier chapitre est consacre a la mise en équations du système forme d'un alternateur et d'un réseau de puissance infinie sous l'hypothèse de petites variations au tour d'un point de fonctionnemen
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22

Talami, Matteo. "Modeling of the Toroidal Field Insert coil for the ITER Project." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/12916/.

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Il contenuto della tesi riguarda le analisi numeriche e sperimentali effettuate su un campione di cavo superconduttivo del sistema magnetico del reattore sperimentale per la fusione nucleare “ITER”. In particolare, il campione di cavo denominato “Toroidal Field Insert” o “TFI”, appartiene al sistema magnetico toroidale della macchina e viene inserito in un solenoide esterno in modo da replicare le condizioni di campo magnetico tipiche del normale funzionamento di questo conduttore. Le analisi sperimentali effettuate sul campione sono mirate alla caratterizzazione del comportamento durante un i
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23

Schmidt, Frank. "Die Bedeutung der Segregations- und Oxidationsneigung Seltener Erden für die Einstellung hartmagnetischer intermetallischer Phasen in SmCo-basierten Nanopartikeln." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-234251.

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Aufgrund der sehr hohen magnetokristallinen Anisotropiekonstante eignet sich besonders die Phase SmCo5 für zukünftige Festplattenmedien mit hoher Speicherdichte. Durch die starke Oxidationsneigung und die gegebene chemischen Ähnlichkeit anderer Seltenen Erden ist es eine Herausforderung hartmagnetische SmCo-basierte Nanopartikel mittels Inertgaskondensation herzustellen. Zudem bestimmt die Oberflächenenergie maßgeblich die Eigenschaften von Nanopartikeln, sodass ein Element mit einer geringen solchen energetisch bevorzugt die Oberfläche bildet. Diese Arbeit zeigt auf, wie die sauerstoffbasie
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24

Youard, Timothy John. "Feasibility of an Electric Jetpack." Thesis, University of Canterbury. Electrical and Computer Engineering, 2010. http://hdl.handle.net/10092/5293.

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The Martin Aircraft Company Limited has been developing the Martin Jetpack for over 25 years. The recent worldwide launch of the Jetpack has enabled the company to step up its research and development programme. The goal of this project was to determine the feasibility of an electrically powered version of the Martin Jetpack. The feasibility of the Electric Jetpack was determined by researching energy storage technologies, researching power cable technologies, simulations of flight times, surveys of electric motors, and the development of a simulation program which was used to optimise some
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25

Sadeghzadeh, Nokhodberiz Seyed Mohammad. "Amélioration de la stabilité transitoire des oscillations d'un réseau électrique à l'aide de SMES et de SSSC." Grenoble INPG, 1998. http://www.theses.fr/1998INPG0033.

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Dans ce travail, la stabilité transitoire et l'amortissement des oscillations dans les réseaux électriques sont améliorés en utilisant la commande en ligne du SMES (Superconducting Magnetic Energy Storage) et du SSSC (Static Synchronous Series Compensator). Les commandes proposées sont basées sur la théorie de la logique floue. Dans le cas du SSSC, elle est associée à la fonction d'énergie transitoire. Nous avons également associé une loi de type mode glissant pour éliminer le lien hors ligne entre la commande du SMES et le centre de contrôle des réseaux. Ceci permet un maintien du fonctionnem
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26

Ham, Wan Kyun. "Active and reactive power control model of superconducting magnetic energy storage (SMES) for the improvement of power system stability." Thesis, 2003. http://wwwlib.umi.com/cr/utexas/fullcit?p3120301.

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27

Simões, Francisco Luís Gonçalves. "Assessment of Using Superconducting Magnetic Energy Storage for Current Harmonic Compensation." Master's thesis, 2021. http://hdl.handle.net/10362/133296.

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This thesis was developed in the frame of the increasing need for power quality control due to the presence of non-linear loads connected to the grid that inject undesired harmonics. The absence of research regarding the simulation of Superconducting Magnetic Energy Storage technology in this type of application made it an interesting approach to study and develop, with the additional benefit of creating an open-source project to catalyze further research. This harmonic correction was achieved by using an active filter composed of a voltage source converter, a capacitor, and a Supercondu
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28

Pombeiro, João Pedro Aurélio. "Contributos para o projeto de sistemas SMES (Superconducting Magnetic Energy Storage) para melhoria na qualidade da energia." Master's thesis, 2018. http://hdl.handle.net/10362/59919.

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Existem vários sistemas de armazenamento de energia elétrica, esta dissertação irá incidir essencialmente nos sistemas Superconducting Magnetic Energy Storage (SMES). Inicialmente, para um melhor entendimento destes sistemas é necessário estudar concei-tos como a supercondutividade e materiais supercondutores, particularmente os superconduto-res de alta temperatura (HTS). Nesta dissertação irão ser abordadas diversas aplicações destes sistemas. Serão desta-cados os sistemas SMES com tecnologia HTS, pois são os que vão ao encontro dos temas abordados ao longo do presente trabalho. Sendo reali
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29

Liu, Sheng-ying, and 劉昇穎. "Dynamic Simulations of Superconducting Magnetic Energy Storage System." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/93590078231643505840.

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碩士<br>義守大學<br>電子工程學系碩士班<br>93<br>A superconducting magnetic energy storage (SMES) system can achieve high-speed, high-rating power exchange, including both active and reactive power. This thesis presents the dynamic simulations of a SMES system by means of the MATLAB/SIMULINK toolbox, power system blockset (PSB). However, with the modern powerful personal computer technology, the time consumed is nevertheless lengthy. In order to save the simulation time required, this thesis develops a simplified model of the SMES. The simplified model simulations can be completed in couple of seconds, and th
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30

Lee, Shin-Muh, and 李新木. "Damping subsynchronous resonance using superconducting magnetic energy storage unit." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/33158179835374966921.

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碩士<br>國立成功大學<br>電機工程研究所<br>81<br>This thesis investigates a damping scheme using superconducting ing magnetic energy storage (SMES) unit to damp subsynchronous resonance (SSR) of the IEEE Second Benchmark Model, system-1 which is a widely employed standard model for computer simulation of SSR. In order to stabilize all SSR modes, simultaneous active and reactive power modulation and a proportional-integral-derivative (PID) damping controller
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31

Lee, Ying-Te, and 李盈德. "Electrical Power Interchanges using Superconducting Magnetic Energy Storage Systems." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/76514995075525370908.

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碩士<br>義守大學<br>電機工程學系碩士班<br>94<br>This objective of this thesis is to investigate the operation of the superconducting magnetic energy storage (SMES) system. A SMES system can absorb and supply electric power instantly. It comprises a superconducting coil (SC) and a converter. The SC is for energy storage. Electric energy stored in a SC is in the form of dc current. Therefore, an interface that can exchange the stored energy in an SC is required. In this thesis, the converter can employ either a rectifier or a chopper. Several computer simulations demonstrate the dynamics of an SMES system.
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32

Sheelvardhan, K. "Analysis and simulation of superconducting magnetic energy storage system." Thesis, 2014. http://ethesis.nitrkl.ac.in/5576/1/e-thesis_41.pdf.

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Subject field of the energy charging, storing and discharging characteristics of the Superconducting Magnetic Energy Storage system have been theoretically studied in the time to make an integrated mathematical model and the simulation model to analyses the characteristics of charging and discharging practically in Matlab. In this paper a novel controller is designed for controlling the Magnetic Energy storage system ensure (a) fast return of energy to the super­conducting coil under constant current mode and (b) a constant and sinusoidal input supply current irrespective of the varying load d
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33

Badel, Arnaud. "Superconducting Magnetic Energy Storage Haute Température Critique comme Source Impulsionnelle." Phd thesis, 2010. http://tel.archives-ouvertes.fr/tel-00654844.

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Le principe d'un SMES (Superconducting Magnetic Energy Storage) est le stockage d'énergie dans l'induction magnétique créé par une bobine court-circuitée. Dans ce travail, les possibilités offertes par les SMES en matériau supraconducteur haute température critique sont étudiées pour l'application source impulsionnelle. L'étude est plus particulièrement orientée vers l'alimentation de lanceurs électromagnétiques, pour laquelle l'utilisation de SMES est comparée à l'alimentation conventionnelle par banc de condensateurs. Dans ce cadre, de nouveaux concepts de SMES adaptés à la charge sont propo
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34

Mishra, B. "Study of power conditioning system of superconducting magnetic energy storage system." Thesis, 2014. http://ethesis.nitrkl.ac.in/5914/1/E-88.pdf.

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A Superconducting Magnetic Energy Storage System (SMES) can be utilized for the compensation of nonlinear and pulsating loads. In this paper a power conditioning system (PCS) is designed to achieve SMES to work as a shunt active power filter and power conditioner at the same time. Two Hysteresis band controllers have been implemented to obtain (i) a sinusoidal input source current in phase with fundamental component of line to neutral source voltage irrespective of the load conditions (ii) Charging and discharging of SMES under constant voltage control mode. DC link voltage is kept constant by
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35

Devarasetti, Nikhil Chandra. "PI Controller Based Power Conditioning System for Superconducting Magnetic Energy Storage System." Thesis, 2015. http://ethesis.nitrkl.ac.in/6844/1/PI_CONTROLLER_Devarestti_2015.pdf.

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A Superconducting Magnetic Energy Storage System (SMES) works on the principle of superconductivity, which is a phenomenon of occurring exactly zero resistance in certain materials when they are cooled below a certain temperature. The power conditioning system (PCS) of SMES consists of a bidirectional voltage source converter (VSC), a bidirectional chopper and a superconducting coil, which I designed mainly for the compensation of non-linear and pulsating loads. In this paper the PCS of SMES is designed to work both as a shunt active power filter and power conditioner at the same time. Two Hys
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36

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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37

Kumar, Pravesh. "Use of Super Conducting Magnet for Energy Storage in Shunt Active Power Filter." Thesis, 2015. http://ethesis.nitrkl.ac.in/7171/1/Use_Kumar_2015.pdf.

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Huge application of non-linear load and electronics apparatus in power system generates harmonics. That makes the current wave form distorted and causes huge power loss in power system. This problem can be overcome by application of Shunt Active Power Flitter (SAPF). Shunt Active Power Filters in an electric power network can improve the quality of power system by removing harmonics which are generated by non- linear load. In this project, a voltage-source PWM converter, and a Super Conductor Magnet for energy storage is used to design a Shunt Active Power Filter. Earlier use of copper inducto
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38

LI, YONG-XUN, and 李永勳. "Small signal stability analysis of power systems with superconducting magnetic energy storage units." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/87447438940034895600.

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39

kumar, V. B. "Control of a Superconducting Magnetic Energy Storage unit for Synchronous Generator Damping Enhancement." Thesis, 2014. http://ethesis.nitrkl.ac.in/5776/1/212ME5407-1.pdf.

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In power system, oscillations may occur due to load change or system fault which creates unsynchronized and undamped signals and creates instability in the system. So to enhance dynamic stability of the system, a control mechanism is constructed for Superconducting magnetic energy storage (SMES) unit to enhance the damping of the power system. Proportional Integral (PI) controller is utilized to improve damping of oscillation of a synchronous generator connected to an infinite bus. Eigen values of system are found using matlab which helps in minimizing the oscillations caused by disturbances a
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40

Penthia, Trilochan. "Performance Analysis and Application of Superconducting Magnetic Energy Storage in a Power System." Thesis, 2018. http://ethesis.nitrkl.ac.in/9768/1/2018_PHD_TPenthia_514EE1008_Performance.pdf.

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Delivering an adequate amount of power to electrical equipment is being a tough job due to the continuous upgradation and technological advancement in the equipment. One of such familiar challenging technology adapted nowadays in power system for some specific applications is termed as pulsed power technology. The electrical grid with pulsed power loads is of the significant interest in aerospace and marine applications. Keeping in the mind of pulsed power applications, especially in defence sectors, the Superconducting Magnetic Energy Storage (SMES) system is proposed for a smooth and reliabl
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41

Chan, Jui-Teng, and 詹睿騰. "Development of a 5kW Permanent-Magnet Synchronous Generator Drive for Flywheel Energy Storage System." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/22731503859633820177.

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碩士<br>國立中正大學<br>電機工程研究所<br>100<br>This thesis develops a 5kW permanent-magnet synchronous generator drive for flywheel energy storage system (FESS). The generator drive system consists of a induction motor as the prime mover, a permanent- magnet synchronous generator, a three-phase three-wire inverter, the auxiliary power supplies, a micro-controller and the auxiliary driving circuits. The proposed space-vector based feed-forward current control uses the position information from the absolute encoder, DC-bus voltage and the inductance current to determine the instantaneous duty ratios of the p
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Chen, Jian-Cheng, and 陳建呈. "Development of a 5kW Permanent-Magnet Synchronous Motor Driver Appliedto Flywheel Energy Storage System." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/19732422826191368916.

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碩士<br>國立中正大學<br>電機工程研究所<br>100<br>In recent years, flywheel batteries drew more attention in the energy storage system. A flywheel battery consists of flywheel, permanent-magnet synchronous motor and the driver. This thesis proposes a space-vector based feedforward current control for the permanent-magnet synchronous motor driver. The topology of this driver is a three phase full-bridge inverter. We use a micro-control unit, RX62T Group PLQP0112JA-A as the kernel of driver control, manufactured by Renesas Electronics. By sampling the signal of dc-link voltage, inductor current and the position
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Tseng, H. Y., and 曾宏毅. "Damping of SSR in A Nonidentical Twoo-Machine System Using Superconducting Magnetic Energy Storage Units." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/88268675344517078089.

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碩士<br>國立成功大學<br>電機工程學系<br>85<br>This thesis investigates the application of superconducting magnetic energy storage (SMES) units to damp subsynchronous resonance (SSR) occurred in a nonidentical two-machine system. The IEEE Second Benchmark Model, system-2 is employed to analyze the effectiveness of the proposed SMES unit with simultaneous active and reactive power modulation. A proportional-integral-derivative (PID) controller using speed deviations of the studied generators as feedback signals is designed by modal control theory to modulate the firing angle of the SMES unit. In order to h
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Jiang, Ming. "Design of a Permanent Magnet Synchronous Machine for a Flywheel Energy Storage System within a Hybrid Electric Vehicle." Master's thesis, 2010. http://hdl.handle.net/10048/1655.

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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 pollution to the environment. An effective flywheel system can be attributed to its good motor/generator (M/G) design. This thesis describes the research work on the design of a permanent magnet synchronous machine (PMSM) as an M/G suitable for integration in a flywheel energy storage system within a large hybrid electric vehicle (HEV). The operating requirements of the application include wide power and speed
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Chen, Shiang-Shong, and 陳翔雄. "Dynamic-Stability Improvement of a Large-Scale Offshore Wind Farm Using a Superconducting Magnetic Energy Storage Unit." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/08442058689812900233.

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博士<br>國立成功大學<br>電機工程學系碩博士班<br>97<br>This dissertation presents a control scheme based on a superconducting magnetic energy storage (SMES) unit to achieve both power flow control and damping improvement of a large-scale offshore wind farm connected to a large power grid. The performance of the studied wind farm (WF) is simulated by an equivalent 80-MW induction generator (IG) consisting of forty 2-MW IGs while an equivalent 60-MW IG consisting of thirty 2-MW IGs is employed to study the characteristics of the marine-current farm (MCF). A damping controller for the SMES unit is designed by using
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Hu, Kai Wei, and 胡凱維. "DEVELOPMENT AND OPERATION CONTROL OF A WIND PERMANENT-MAGNET SYNCHRONOUS GENERATOR BASED DC MICRO-GRID WITH HYBRID ENERGY STORAGE." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/66455357797359965766.

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博士<br>國立清華大學<br>電機工程學系<br>103<br>This dissertation is aimed at the development and operation controls of a DC micro-grid powered by wind permanent-magnet synchronous generator (PMSG) and DC source with hybrid energy storage devices. The DC sources are interfaced to the common DC bus via an interleaved DC/DC boost converter. As to the wind PMSG, after exploring the derated characteristics of PMSG systems with various AC/DC converters, a three-phase Vienna switch-mode rectifier (SMR) is developed as its interface to establish the common DC bus voltage of DC micro-grid. Its developed power is imp
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Ting-WeiHong and 洪庭尉. "Stability Analysis of a Hybrid Offshore Wind Farm Connected to HVDC System with Supercapacitor Energy Storage System and High Temperature Superconducting Wire." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/81935509193948352234.

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碩士<br>國立成功大學<br>電機工程學系<br>103<br>This thesis presents stability analysis of an integration of a superconducting synchronous generator (SCSG)-based offshore wind farm (OWF) and a permanent-magnet synchronous generator (PMSG)-based OWF connected to a power grid through a high-voltage direct current (HVDC) system using a supercapacitor energy-storage system and a high temperature superconducting wire. The q-d axis equivalent-circuit model is derived to establish the complete system model under three-phase balance conditions. Steady-state analysis characteristics of the studied system under diffe
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Chowdhury, MM. "Modelling and control of direct drive variable speed wind turbine with Interior Permanent Magnet Synchronous Generator." Thesis, 2014. https://eprints.utas.edu.au/20844/1/Whole-Chowdhury-thesis.pdf.

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The interest in wind energy system is growing worldwide to reduce dependency on fossil fuel and to minimize the adverse impact of climate change. Currently, doubly fed induction generator (DFIG) based variable speed wind turbine technology with gearbox is dominating the world market share. However, the problems associated with induction generator based wind turbines are reactive power consumption, mechanical stress and poor power quality. Moreover, the gearbox requires regular maintenance as it suffers from faults and malfunctions. Therefore, it is important to adopt technologies that ca
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(5930828), Abhijit Sahu. "Quantification of uncertainty in the magnetic characteristic of steel and permanent magnets and their effect on the performance of permanent magnet synchronous machine." Thesis, 2019.

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<div>The numerical calculation of the electromagnetic fields within electric machines is sensitive to the magnetic characteristic of steel. However, the magnetic characteristic of steel is uncertain due to fluctuations in alloy composition, possible contamination, and other manufacturing process variations including punching. Previous attempts to quantify magnetic uncertainty due to punching are based on parametric analytical models of <i>B-H</i> curves, where the uncertainty is reflected by model parameters. In this work, we set forth a data-driven approach for quantifying the uncertainty due
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Balibani, Siva Kumar. "Small Signal Stability Analysis of a Power System with a Grid Connected Wind Powered Permanent Magnet Synchronous Generator (PMSG)." Thesis, 2015. http://etd.iisc.ac.in/handle/2005/3835.

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Small signal oscillation has been always a major concern in the operation of power systems. In a generator, the electromechanical coupling between the rotor and the rest of the system causes it to behave in a manner similar to a spring mass damper system. Following any disturbance, such as sudden change in loads, actuations in the output of turbine and faults etc. it exhibits an oscillatory behaviour around the equilibrium state. The use of fast acting high gain AVRs and evolution of large interconnected power systems with transfer of bulk power across weak transmission links have further aggr
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