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Dissertations / Theses on the topic 'Synchronous PWM'

Author: Grafiati

Published: 4 April 2023

Last updated: 31 July 2025

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1

So, Ting-pat Albert, and 蘇廷弼. "PWM-based asymmetrical rotor synchronous/industion drive." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1988. http://hub.hku.hk/bib/B31208903.

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So, Ting-pat Albert. "PWM-based asymmetrical rotor synchronous/industion drive /." [Hong Kong : University of Hong Kong], 1988. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12359452.

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3

Gullone, Giorgio. "Sensorless algorithm for synchronous machines using current oversampling and PWM harmonics." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-240413.

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Sensorless-controlled drives represent a solution drawing an increasinglyimportant attention for the benefits they entail. At the cost ofa slightly lower dynamics compared with the traditional drives, theyinvolve a reduction of the system costs and complexity and improvednoise immunity and reliability. Besides the traditional signal injectionmethods, involving a limitation of the machine voltage margin, higheriron losses, torque ripple and acoustic noise, a new method has beenproposed in 2010 by professors Bolognani, Faggion and Sgarbossa.This algorithm, which has been defined "intrinsic injec

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4

Ibrahim, Zulkifilie. "Fuzzy logic control of PWM inverter-fed sinusoidal permanent magnet synchronous motor drives." Thesis, Liverpool John Moores University, 2000. http://researchonline.ljmu.ac.uk/5058/.

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5

Yang, Jian. "Prediction of the power losses of PWM inverter drives for permanent magnet synchronous motors." Thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-06112009-063124/.

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6

Miao, Dongmin. "Voltage Stabilization Control of Wide-Speed-Range Permanent-Magnet Synchronous Generator Systems." Doctoral thesis, Universite Libre de Bruxelles, 2016. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/246410.

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DC power systems have a constant DC-link voltage, as well as the advantages such as high stability, high efficiency, small size and light weight; therefore, they are widely used in stand-alone power systems, e.g. the power systems in aircrafts and automobiles, isolated wind power generation systems, etc. Permanent-Magnet Synchronous Generators (PMSGs) possess the advantages including high power density, high efficiency, and high control precision, and have obtained great attention and have been widely used in military, inductry, and daily life. Pulse Width Modulation (PWM) rectifier has been o

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7

Eriksson, Per. "Design and implementation of a servo system by Sensor Field Oriented Control of a BLDC motor." Thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-236875.

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A servo system intended to steer antennas on board ships is designed, built and tested. It uses a Brushless Direct Current (BLDC) motor with an encoder to keep track of its position, and Field Oriented Control (FOC) implemented on Toshibas microprocessor TMPM373 in order to control the current flowing to the motor. The servo system will be connected in cascade to another already existing servo system and controlled with two input signals. The first signal determines if the antenna axis should rotate clockwise or counter clockwise. The second signal is a stream of pulses, where each pulse means

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Bernardes, Thiago Araújo. "Análise e controle de gerador síncrono a ímã permanente aplicado a sistema de conversão de energia eólica." Universidade Federal de Santa Maria, 2009. http://repositorio.ufsm.br/handle/1/8472.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This dissertation addresses the analysis and control of permanent magnet synchronous generators (PMSG) found in wind energy conversion system. The operation modes of the wind turbine the current and voltage constraints of a PWM rectifier are defined and a methodology to determine the generator current is presented. The generator currents obtained guarantee the maximization of wind energy extraction as well as the minimization of the PMSG and rectifier losses. In addition, a space-vector modulation technique in overmodulation region

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Bourgeade, Adrien. "PWM control optimization of a two-level inverter : Application to electric and hybrid vehicles." Electronic Thesis or Diss., Ecole centrale de Nantes, 2022. http://www.theses.fr/2022ECDN0045.

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Malgré les améliorations de topologies des convertisseurs DC/AC, l'onduleur à deux niveaux reste le "gold standard" dans l'industrie ceci pour de multiples raisons : simplicité, fiabilité, etc. Dans le cadre de cette thèse entre Centrale Nantes et Renault, de nouvelles commandes d'onduleur ont été développées afin d'améliorer les performances sans modifier la topologie du convertisseur. Pour cela, deux approches basées sur des commandes hors-ligne synchrones ont été proposées. Premièrement, celles qui relaxent la contrainte de symétrie angulaire entre phases, usuellement imposée au convertisse

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Yildirim, Dogan. "Field Oriented Control Of A Permanent Magnet Synchronous Motor Using Space Vector Modulated Direct Ac-ac Matrix Converter." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614302/index.pdf.

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The study designs and constructs a three-phase to three-phase direct AC&ndash<br>AC matrix converter based surface mounted permanent magnet synchronous motor (PMSM) drive system. First, the matrix converter topologies are analyzed and the state-space equations describing the system have been derived in terms of the input and output variables. After that, matrix converter commutation and modulation methods are investigated. A four-step commutation technique based on output current direction provides safe commutation between the matrix converter switches. Then, the matrix converter is simulated

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11

TARHAN, Muhammed Mustafa. "Assessment and Development of Advanced Power Saving and Supply Concepts For Small Automotive Electronics." Thesis, Mittuniversitetet, Avdelningen för elektronikkonstruktion, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-23588.

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With rising fuel prices, increasing electrification, and imminent fines on CO2 emission within the EU, the requirement for energy and cost efficient supply concepts is becomingmore and more important in the automotive industry. This thesis presents an assessmentof, and improvement for energy and cost efficient power supply concepts for low-end automotiveand light e-mobility electronic control units, containing small µCs, and analogand logic components. Specifically, linear regulators, synchronous and non-synchronous buck converters, andswitched capacitor converters are investigated and assesse

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12

Bláha, Martin. "Elektronicky komutovaný motor." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217634.

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This work discusses about nowadays problematic of the electronic comutation motors.This work also describes the opportunity of electronic control of these motors. The result of this work is realization of electronic control circuit from discreet components. There also are mentioned is proposal of electronic control board from SMD components. This control board include temperature control with ventilator switching , commutation logic, PWM speed control. In the last part of this paper are results of evaluation measurements of EC motor.

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Barden, Alisson Thomas. "Projeto e análise de controladores robustos aplicados a inversores trifásicos de fontes ininterruptas de energia (UPS)." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/141945.

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O objetivo principal deste trabalho é o desenvolvimento de controladores robustos baseados no princípio do modelo interno, em referenciais síncrono e estacionário, para aplicação ao estágio de saída de uma fonte ininterrupta de energia (UPS) a fim de minimizar a distorção na tensão de saída causada pela conexão de cargas não lineares balanceadas e desbalanceadas. A formulação em referencial estacionário (abc) é realizada através da aplicação de controladores com múltiplos modos ressonantes, a fim de se estabelecer erro nulo ao seguimento de referência senoidal e rejeição de distúrbios na tensã

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14

Pazdera, Ivo. "Průmyslové čerpadlo s integrovaným elektromagnetickým systémem." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-233600.

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This work is focused on innovative construction of the industrial radial sealless pump and mainly on construction of the three phase DC/AC converter based on new semiconductor technology SiC. These new semiconductor devices allow move switching frequency up to 100 kHz. For such high switching frequency new non-conventional topology of the output filter was designed. This high frequency is currently unusual in three-phase application with output voltage 400V. High switching frequency reduces size of wound components of the output filter and its presence is accepted in terms of total weight and

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Johnson, Jordan Lowell. "Integrating Synchronous Collaborative Applications with Product Lifecycle Management Workflows." BYU ScholarsArchive, 2015. https://scholarsarchive.byu.edu/etd/5501.

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Product Lifecycle Management (PLM) systems are used by thousands of engineering companies world wide. Improving these systems will have a drastic and global effect. One possible improvement is to integrate synchronous collaborative applications with PLM systems. These applications allow multiple people to work on a single digital object simultaneously. They have already been shown to reduce the time a task requires. Using these applications to complete a project will reduce the project time. However, simply including synchronous collaborative applications within a PLM system ignores powerful b

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16

Hasnain, Bakhtiyar Asef, and Ademir Hodzic. "Design and Simulation of a Slotless Aircored PM Synchronous Generator." Thesis, Uppsala universitet, Institutionen för elektroteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-425268.

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This thesis is a study on an unconventional slow speed direct drive permanent magnet (PM) generator. Unlike a standard permanent magnet synchronous generator (PMSG) which has the copper coils wound around iron teeth, the work in this thesis will present a generator where the copper coils are directly mounted on the stator which eliminates the slots and teeth in the generator. By having a slotless design it is possible to eliminate cogging torque, iron losses in teeth and achieve a lightweight design. These characteristics can prove useful when developing generators for an application such as w

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17

Tiwari, Raghbendra. "Application of AC Superconducting Windings in Large PM Synchronous Generators for Wind Power." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18308.

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Superconductors are known for carrying very high current density without any loss of energy. This characteristic helps to achieve very high power capacity with compact size of machine. In application of superconductors, the main obstacle has been the cooling of the conductors since it operates at very low temperatures below ambient. After the discovery of high temperature superconductor (HTS) in 1986, several prototype machines have been built using in DC field winding. The application of superconductor in AC armature winding has not been feasible due to excessive AC losses. These losses are c

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18

Sibande, Sguda Enock. "Rotor design and performance evaluation of a PM-assisted reluctance synchronous traction machine." Thesis, Stellenbosch : Stellenbosch University, 2005. http://hdl.handle.net/10019.1/50444.

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Thesis (MScEng)--University of Stellenbosch, 2005.<br>ENGLISH ABSTRACT: The thesis describes the optimum rotor design and performance of a 110kW Permanent-Magnet assisted (PM-assisted) Reluctance Synchronous traction Machine (RSM) using bonded permanent magnet sheets. Particular attention is given to the performance of the machine drive in the flux-weakening speed region. A detail explanation is given of the finite-element design optimisation, the basic principles of operation and the control-design of the PM-assisted RSM drive. A theoretical torque comparison of the PM-assisted RSM, th

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19

Manzolini, Virginia. "Advanced algorithms for flux-weakening and sensorless control of interior PM and reluctance synchronous motor drives." Doctoral thesis, Università degli studi di Padova, 2019. http://hdl.handle.net/11577/3427316.

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Everyone is noting that Permanent Magnet Synchronous Machines (PMSMs) are more and more invading home, commercial and industrial applications thanks to their superior performance and efficiency, high torque and power density. Due to these features, this kind of machines is widely employed in several fields of technology. In the transportation branch, electric traction based on PMSM is becoming a strong competitor with conventional propulsion systems based on either combustion engines or induction machines. Clear examples are pure and hybrid electric vehicles, trains etc... Due to the always mo

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20

Ivanic, Boris. "AVR for a synchronous generator with a six-phase PM alternator and rotating excitation system." Thesis, Uppsala universitet, Elektricitetslära, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-201997.

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Automatic voltage regulation is necessary for all power producing synchronous generators to ensure that the produced power have a constant and stable voltage level and to sustain grid stability. The aim of this thesis is to design and build an automatic voltage regulator for a synchronous generator. A six-phase permanent magnet alternator will be used to excite the rotor with solid-state relay controlled rotating bridge rectifier. The field current is regulated by a closed loop control system that is based on a programmable logic controller, PLC. Programing of the PLC is executed in the develo

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21

Acquaviva, Alessandro. "Analytical Modeling of Iron Lossesfor a PM Traction Machine." Thesis, KTH, Elektrisk energiomvandling, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-105477.

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Permanent magnet (PM) machines offer several advantages in traction applications such as high efficiencyand high torque per volume ratio. The iron losses in these machines are estimated mostly with empiricallaws taken from other types of machines or with finite element simulations (FEM). In the first part of thisthesis the objective is to define an accurate analytical model for the stator yoke, teeth and rotor of a PMmotor which should work well enough for all operating point (different loads and frequency).This analytical model is found using an iterative process. After building a loss matrix

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22

Faggion, Adriano. "Algorithms and Rotor Designs for the Position Estimation of PM Synchronous motors at Zero and Nonzero Speed." Doctoral thesis, Università degli studi di Padova, 2011. http://hdl.handle.net/11577/3427488.

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This thesis deals with the estimation algorithms, reassuming in detail the principles commons techniques and testing them in simulation and by experimentation. The following estimator typologies are discussed: MRAS estimator in the high speed region, estimator based on the high frequency injection signals in the low and zero speed region. As regards the MRAS estimator, after its description, a particular application that exploits this estimation solution is presented. Then, a sensorless control of a Permanent Magnet synchronous motor drive for a hybrid electric catamaran is reported. A Surfa

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23

Mikuška, Martin. "Střídač pro trojfázový motor." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220710.

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This master’s thesis goes into design of particular circuits for three phase inverter. Inverter’s control is ensured by digital signal controller MC56F8013 with his program. Principle of control is suggested for individual motors. Inverter design considerate universal use and capability for any three phase motor. Particular blocks are compatible each other.

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Huang, Ming Chuan. "Comparison of shaft position estimation and correction techniques for sensorless control of surface mounted PM synchrononous motors." Thesis, Cardiff University, 2009. http://orca.cf.ac.uk/54888/.

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This thesis is a detailed study of how two error correction schemes affect the precision of shaft position estimation in state-observer techniques for sensorless control surface-mounted Permanent Magnet Synchronous Motors (PMSM), variance correction and variable PI regulation. A novel sensorless estimation technique based on Linear Kalman Filter (LKF) through constant variance correction is proposed and compared with the conventional Flux Linkage Observer (FLO) method and other state-estimation sensorless control techniques namely, Extended Kalman Filter (EKF), variable variance correction, Si

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Lee, Youngkook. "A Stator Turn Fault Detection Method and a Fault-Tolerant Operating Strategy for Interior PM Synchronous Motor Drives in Safety-Critical Applications." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/16156.

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A stator turn fault in a safety-critical drive application must be detected at its initial stage and imperatively requires an evasive action to prevent a serious accident caused by an abrupt interruption in the drive s operation. However, this is much challenging for the case of an interior permanent magnet synchronous motor (IPMSM) drives because of the presence of the permanent magnets that cannot be turned off at will. This work tackles the problem of increase the stator turn fault tolerance of IPMSM drives in safety-critical applications. This objective is achieved by an on-line turn fa

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Fakam, Tchakoue Mathias. "Dimensionnement vibro-acoustique des machines synchrones à aimants permanents pour la traction ferroviaire : Règles de conception silencieuse." Thesis, Ecole centrale de Lille, 2014. http://www.theses.fr/2014ECLI0004/document.

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Cette thèse de doctorat s'inscrit dans un projet pour le développement du transport ferroviaire piloté par la société ALSTOM Transport. Il répond aux prévisions de quadruplement des déplacements interurbains et régionaux en France à l'horizon 2020 en respectant les contraintes environnementales très sévères, dont les normes restrictives du niveau de bruit émis par les trains. Une réduction importante du bruit émis par le moteur est donc nécessaire. Notre mission dans ce projet a été de développer un outil capable de prédire le bruit d'origine électromagnétique produit par les moteurs synchrone

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27

Preindl, Matthias. "Novel Model Predictive Control of a PM Synchronous Motor Drive; Design of the Innovative Structure, Feasibility and Stability Analysis, Efficient Implementation, Experimental Validation." Doctoral thesis, Università degli studi di Padova, 2014. http://hdl.handle.net/11577/3423480.

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This text focuses on advanced torque control of permanent magnet synchronous motor drives. A novel modular structure is introduced to simplify the design and implementation of Model Predictive Control (MPC). The layout consists of the control and the control framework. The dynamic control is the novel virtual flux controller, which is used to reach desired reference values, and the state observer, which is used to reduce effects of non-modeled system properties. The control framework consists of static mappings to simplify the control problem. Besides the alpha-beta and d-q transformations, a

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Silaghiu, Sorin Mihail [Verfasser], Peter [Akademischer Betreuer] Mutschler, and Bernhard [Akademischer Betreuer] Piepenbreier. "Design and test of a highly scalable servo drive system based on PM linear synchronous motors / Sorin Mihail Silaghiu. Betreuer: Peter Mutschler ; Bernhard Piepenbreier." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2012. http://d-nb.info/1106114892/34.

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29

Sporni, Peter. "Model synchronního stroje s PM založeného na ekvivalentní reluktanční síti." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218792.

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Táto práca pojednáva o problematike vytvárania a simulácie reluktančnej sieti synchrónneho stroja s V tvarovanými permanentnými magnetmi v programe PSpice. Na začiatku sa oboznámime s konštrukciou a parametrami stroja a potom vyvodíme základné rovnice na výpočet každého prvku siete. Vypočítame každý prvok tohto stroja a potom vytvoríme túto sieť v PSpice. Na začiatku je simulovaná sieť statická a všetky magnetické odpory sú lineárne. Neskôr nahradíme lineárne odpory reprezentujúce plechy nelineárnymi a počítame s precovnou teplotou permanentných magnetov. Potom porovnáme naše výsledky s FEM me

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Dušek, Jiří. "Řízení stroje s PM v d-q osách při použití Matlab/Simulink." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218789.

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Tato práce se zabývá synchronním motorem s permanentními magnety na rotoru (PMSM), jeho modelováním a návrhu regulační struktury. V práci jsou uvedeny způsoby a výhody použití permanentních magnetů v elektrických motorech. Dále se práce zabývá transformací třífázové soustavy do dq0. Pomocí Parkovy transformace jsou v práci odvozeny rovnice stroje v dq0 souřadnicovém systému a vytvořeny náhradní schémata stroje v dq osách. Rovnice i schémata zahrnují jak ztráty v mědi, tak ztráty v železe. Náhradní schémata jsou popsány elektrickými a mechanickými rovnicemi a následně překresleny do grafické po

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Cuenot, Jérémy. "Architectures d'alimentation et de commande des actionneurs haute-vitesse connectés aux réseaux avioniques à tension variable." Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0263/document.

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La révolution technologique majeure des nouveaux aéronefs repose sur une électrification intensive de nombreux constituants de l'appareil et le fait que la vitesse des génératrices électriques n'est plus fixe mais variable. Cette nouvelle manière de générer la puissance électrique engendre des variations de tension sur les réseaux DC. De plus, pour accroître la compacité des Machines Synchrones à Aimants Permanents (MSAP) à puissance donnée, on augmente autant que possible leur vitesse d'entrainement, en les associant pour certaines applications à des réducteurs mécaniques. La variation du niv

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Billings, Don, Mei Wei, Joseph Leung, Michio Aoyagi, Fred Shigemoto, and Rob Honeyman. "REAL-TIME INTEGRATION OF RADAR INFORMATION, AND GROUND AND RADIOSONDE METEOROLOGY WITH FLIGHT RESEARCH DATA." International Foundation for Telemetering, 1998. http://hdl.handle.net/10150/607368.

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International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, California<br>Although PCM/TDM framed data is one of the most prevalent formats handled by flight test ranges, it is often required to acquire and process other types. Examples of such non-standard data types are radar position information and meteorological data from both ground based and radiosonde systems. To facilitate the process and management of such non-standard data types, a micro-processor based system was developed to acquire and transform them

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Cuenot, Jérémy. "Architectures d'alimentation et de commande des actionneurs haute-vitesse connectés aux réseaux avioniques à tension variable." Electronic Thesis or Diss., Université de Lorraine, 2017. http://www.theses.fr/2017LORR0263.

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La révolution technologique majeure des nouveaux aéronefs repose sur une électrification intensive de nombreux constituants de l'appareil et le fait que la vitesse des génératrices électriques n'est plus fixe mais variable. Cette nouvelle manière de générer la puissance électrique engendre des variations de tension sur les réseaux DC. De plus, pour accroître la compacité des Machines Synchrones à Aimants Permanents (MSAP) à puissance donnée, on augmente autant que possible leur vitesse d'entrainement, en les associant pour certaines applications à des réducteurs mécaniques. La variation du niv

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Aboelhassan, Mustafa Osman Elrayah. "Robustní řízení synchronního stroje s permanentními magnety a spínaným tokem." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-233605.

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Je jasné, že nejúspěšnější konstrukce zahrnuje postup vícefázového řízení, ve kterém každá fáze může být považována za samostatný modul. Provoz kterékoliv z jednotek musí mít minimální vliv na ostatní, a to tak, že v případě selhání jedné jednotky ostatní mohou být v provozu neovlivněny. Modulární řešení vyžaduje minimální elektrické, magnetické a tepelné ovlivnění mezi fázemi řízení (měniče). Synchronní stroje s pulzním tokem a permanentními magnety se jeví jako atraktivní typ stroje, jejíž přednostmi jsou vysoký kroutící moment, jednoduchá a robustní konstrukce rotoru a skutečnost, že perman

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游宗穎. "A high-efficiency synchronous CMOS switching regulator with PWM/PFM-mode operation." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/90574937537011997692.

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Hsu, Pao-Sheng, and 許堡勝. "A Synchronous PWM Controller for A CCFL Royer Inverter." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/84363382960434258762.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>93<br>This thesis presents a synchronous PWM controller for self-oscillation Royer inverter. The dead-time-modulated PWM (DTM-PWM) controller is composed of a monostable circuit and a constant-current charger (CCC). The controller use the primary-side feedback control strategy to eliminate the thermometer effect occurring in the cold-cathode fluorescent lamp (CCFL).The referred sawtooth is composed with a constant-period charge time and a variable dead-time. The synchronizing strategy is conducted by modulating the dead-time according to the resonant frequency of the

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Chih, Yi-Te, and 池怡德. "Study of Direct Torque Control for Permanent Magnet Synchronous Motor Drives with Space Voltage Vector PWM." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/51421247337279610310.

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碩士<br>國立成功大學<br>工程科學系碩博士班<br>93<br>This thesis presents a new direct torque control (DTC) system to control the permanent magnet synchronous motor (PMSM) based on a TMS320F2812 digital signal processor (DSP) experiment board. The digitalized PMSM control system was implemented by using DSP experiment board with advantages such as high precision and reliability and the controlling error caused by the variance of temperature or the interference of noise can be banished. 　The proposed DTC scheme in this thesis uses a flux compensator to eliminate the error in stator flux estimation at low speed

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Su, Hao-Bin, and 蘇豪斌. "Analysis and Synthesis for A Novel ZVT-PWM Diagonal Half-Bridge Forward DC/DC Converter with Synchronous Rectification." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/53072295022980075395.

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碩士<br>國立成功大學<br>工程科學系碩博士班<br>94<br>Based on the Diagonal Half-Bridge Forward (DHBF) DC/DC converter and soft switching technique, a novel Zero-Voltage-Transition Pulse-Width Modulation (ZVT-PWM) DHBF DC/DC converter is proposed in this thesis. It has high power conversion efficiency. 　　The diagonal switches of the conventional DHBF converter exhibits hard switching. To achieve soft-switching operation, the voltages of the diagonal switches must resonate down to zero before switching. 　　The proposed converter is developed by paralleling an auxiliary circuit at primary side of the transformer

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Liu, Li-hsiang, and 劉立祥. "DSP-Based Sensor-less Permanent Magnet Synchronous Motor Driver With Quasi-Sine PWM for Air-Conditioner Rotary Compressor." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/92687055331848466788.

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博士<br>國立中山大學<br>電機工程學系研究所<br>100<br>This thesis presented a sensor-less permanent magnet synchronous motor (PMSM) driver for controlling air-conditioner rotary compressor speed. In this thesis, a quasi-sine pulse-width modulation (PWM) driving method was proposed. Furthermore, the current feedback control scheme and rotor magnet pole position detection were included. The system structure was implemented by using a digital signal processing (DSP) platform. The proposed driving scheme was compared with the square-wave driving without current feedback and six-step square-wave driving method with

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Jiang, Maoh Chin, and 江茂欽. "Novel three-phase current-forced voltage-doubler PWM converter and applications to solid-state synchronous condenser and active power filter." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/91085629515430974431.

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Xu, Li-Fang, and 許力方. "A new torque controlled PM synchronous motor drive." Thesis, 1991. http://ndltd.ncl.edu.tw/handle/05178326170056099465.

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Lin, Da-Chung, and 林大鈞. "Robust Two Degree of Freedom Control of PM Synchronous Motors." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/71207057423287661976.

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碩士<br>國立中山大學<br>電機工程學系研究所<br>88<br>Because of several advantages, e.g. compact structure, high air-gap flux density, and high torque capability, the PM synchronous motor plays an important role in recent years. The basic principle of controlling a PMSM is based on vector control. The control performance is influenced by factors as the plant parameter variations, the external load disturbances, and the unmodeled or nonlinear dynamics. In the thesis, we apply a recently proposed robust 2DOF configuration to designing controllers for PMSM to achieve the robust asymptotical tracking under perturba

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Lin, Tsung-Jen, and 林宗仁. "A Study on Integration of PM/Synchronous Generators and PV System." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/btu78x.

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碩士<br>國立成功大學<br>電機工程學系碩博士班<br>90<br>This thesis presents the results of a study on integration of a permanent magnet generator (PMG)/a synchronous generator (SG) and a PV System. A PMG and a SG are respectively utilized as a wind generator. To improve variable frequency, variable voltage, and loading effects of both generators under random wind speeds, a rectifier module and a battery system are employed to combine both PV and wind systems. The stored energy in the battery system is converted into constant voltage and constant frequency by means of an inverter module to supply isolated loads o

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Chia-NingChang and 張家寧. "A Study on Suppression of Bearing Current for PM Synchronous Motor." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/2cpvdr.

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Πρωιμάδης, Ιωάννης. "Μελέτη και κατασκευή συστήματος οδήγησης σύγχρονου κινητήρα μαγνητικής αντίδρασης (reluctance)". Thesis, 2012. http://hdl.handle.net/10889/6225.

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Η παρούσα διπλωματική πραγματεύεται τη μελέτη και κατασκευή ενός κυκλώματος οδήγησης ενός Σύγχρονου Κινητήρα Μαγνητικής Αντίδρασης. Η εργασία αυτή εκπονήθηκε στο Εργαστήριο Ηλεκτρομηχανικής Μετατροπής Ενέργειας του τμήματος Ηλεκτρολόγων Μηχανικών και Τεχνολογίας Υπολογιστών της Πολυτεχνικής Σχολής του Πανεπιστημίου Πατρών. Σκοπός είναι η μελέτη και κατασκευή ενός κυκλώματος Τριφασικού Αντιστροφέα Πηγής Τάσης, ο οποίος θα επιτρέπει την υλοποίηση βαθμωτού και διανυσματικού ελέγχου της λειτουργίας του Σύγχρονου Κινητήρα Μαγνητικής Αντίδρασης. Στην παρούσα διπλωματική εργασία υλοποιήθηκε βαθμω

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Chen, Li-Yuan, and 陳立原. "The Design and Implementation of a DSP-Based PM Synchronous Motor Drive." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/00540601894458922132.

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碩士<br>逢甲大學<br>電機工程所<br>96<br>The main purpose of this thesis is to design and implement a Permanent Magnet Synchronous Motor (PMSM) drive by using the Digital Signal Processor (DSP) controller. The Direct Torque Control (DTC) is a method to control the torque by calculating the magnetic flux and torque based on the measured voltage and current of the motor. Because of the fast response characteristics for torque and flux changes, if has widely adopted to the AC inductor motors drive. In order to obtain the same results as in the inductor motors drive, the DTC algorithm will be applied to the P

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Luo, Yi-ren, and 羅以任. "Optimal Design and Analysis of a Direct-Drive Wind PM Synchronous Generator." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/67317260859013451789.

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碩士<br>逢甲大學<br>電機工程所<br>98<br>The purpose of this thesis is to design a direct-drive wind permanent magnet synchronous generator for use in small-scale wind energy applications. First, based on the proposed design procedure, a suitable slot and pole number combination and winding layout are selected. Then a prototype generator that meets the required output power is designed. In order to reduce the cogging torque and increase the efficiency, the shapes of slot in the stator and the size of the magnets in the rotor are optimized using the Taguchi method coupled with the finite element analysis f

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Chen, Yu-Da, and 陳昱達. "Design of Vector Control Chip for Speed Sensorless Interior PM Synchronous Motor." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/36041236686903048420.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>97<br>This thesis applies the cell-based IC design flow procedure to develop a vector control chip for a speed sensorless interior permanent magnet (IPM) synchronous motor. First, the speed sensorless vector control system for an IPM is established. The system is per unitized so that it can be applicable to different motor specifications. Next, the computer-aided design tool, MATLAB/Simulink, is used to build the floating-point based numerical model, which is then used to design fixed-point Q-value based 32-bit and 16-bit numerical models for the IPM control system.

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Baek, Jeihoon. "Robust Generator System Using PM Assisted Synchronous Reluctance Generator with Current-fed Drive." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7319.

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The growth of embedded generation and portable electrical installations has led to an increased demand for low cost, flexible and reliable generator systems for military and commercial applications. An interior permanent magnet (IPM) machine has high power density due to its reluctance torque and magnetic torque components so it can produce a large constant power-speed range. However, an IPM machine needs demagnetizing current at high-speed during the flux-weakening region and thus develops an inverter shutdown problem in an uncontrolled generator mode operation. In order to overcome the disad

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Chiu, Chien-Shiang, and 邱健翔. "Experimental results on speed control of a PM synchronous motor using fuzzy-vss." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/30717334061857613860.

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碩士<br>國立聯合大學<br>電機工程學系碩士班<br>95<br>In this paper, we try to apply a fuzzy variable structure controller in the speed control of permanent magnet synchronous motor. Since the variable structure controller is extremely robust, it can be used to eliminate the variance of motor parameters as well as the impact of external load on the system response. However, the introduction of high speed and discontinuous switching action cause the so-called chattering phenomenon, which is highly undesirable because it may excite high frequency unmodeled plant dynamics and may lead to unforeseen instability. To

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