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Dissertations / Theses on the topic 'Space-vector modulation'

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Published: 4 June 2021

Last updated: 26 July 2025

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1

Rogers, L. Warren. "Synthetic space vector modulation." Monterey, California: Naval Postgraduate School, 2013. http://hdl.handle.net/10945/34731.

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Approved for public release; distribution is unlimited<br>Alternating current motors are used throughout the fleet because of their rugged construction and nearly maintenance free operation. Since the U.S. Navy is exploring and acting on the possibilities of DC distribution systems, the need exists for simple, reliable three-phase voltage source inverter (VSI) powered induction machines. Until recently, VSIs utilized a pulse width modulation (PWM) scheme controlling the frequency and amplitude of each phase. A novel and simple hardware centered VSI controller was designed, simulated, built and

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2

Khan, Hamid. "Optimised space vector modulation for variable speed drives." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2012. http://tel.archives-ouvertes.fr/tel-00999475.

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The dissertation documents research work carried out on Pulse Width Modulation (PWM) strategies for hard switched Voltage Source Inverters (VSI) for variable speed electric drives. This research is aimed at Hybrid Electric Vehicles (HEV). PWM is at the heart of all variable speed electric drives; they have a huge influence on the overall performance of the system and may also help eventually give us an extra degree of freedom in the possibility to rethink the inverter design including the re-dimensioning of the inverter components.HEVs tend to cost more than conventional internal combustion en

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3

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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4

Mason, Nicholas J. "Space vector modulation of a 4-leg matrix converter." Thesis, University of Nottingham, 2011. http://eprints.nottingham.ac.uk/12266/.

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This thesis covers the investigation into the use of Space Vector Modulation for the control of a 4-leg matrix converter, which is capable of providing a 3-phase plus neutral supply from a standard balanced 3-phase source. Traditional 3x3 matrix converters have limited use in this application as they are only capable of supplying a balanced three-phase load. It would be desirable to be able to power unbalanced and non-linear loads, requiring that the converter provides a neutral connection. As with voltage source inverters, this goal can be achieved by extending the number of output legs in th

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Prasad, V. Himamshu. "Analysis and Comparison of Space Vector Modulation Schemes for Three-Leg and Four-Leg Voltage Source Inverters." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/36578.

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Several space vector modulation schemes have been analyzed for three-leg and four-leg voltage source inverters. The analysis is performed with respect to a) switching losses, b) total harmonic distortion, c) peak-to-peak ripple in the line current and d) the ease of digital implementation. The analysis is performed over the entire range of modulation index and for varying load power factors (leading and lagging) under both balanced and unbalanced load conditions. The analysis shows that the performance of four-leg inverters is similar to three-leg inverters for various space vector modulation

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6

Kronberg, Anders. "Salient Pole Motor Inverter Design : with Implementation of Space Vector Modulation." Thesis, Uppsala universitet, Elektricitetslära, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-192994.

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The researchers at the Department of Electricity at Uppsala University has recently entered the field of electric motor design, however no real knowledge of motor control of salient pole permanent magnet motors exists in the department. This master thesis is a continuation of a previous bachelor thesis that analyses the theory behind the control and simulating two different control methods. The two methods are here discarded for their high torque ripple. A third method is therefore implemented in this thesis to improve the performance. This thesis will present the design and construction of an

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7

Narayanan, G. "Synchronised Pulsewidth Modulation Strategies Based On Space Vector Approach For Induction Motor Drives." Thesis, Indian Institute of Science, 1999. https://etd.iisc.ac.in/handle/2005/139.

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In high power induction motor drives, the switching frequency of the inverter is quite low due to the high losses in the power devices. Real-time PWM strategies, which result in reduced harmonic distortion under low switching frequencies and have maximum possible DC bus utilisation, are developed for such drives in the present work. The space vector approach is taken up for the generation of synchronised PWM waveforms with 3-Phase Symmetry, Half Wave Symmetry and Quarter Wave Symmetry, required for high-power drives. Rules for synchronisation and the waveform symmetries are brought out. Th

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8

Narayanan, G. "Synchronised Pulsewidth Modulation Strategies Based On Space Vector Approach For Induction Motor Drives." Thesis, Indian Institute of Science, 1999. http://hdl.handle.net/2005/139.

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In high power induction motor drives, the switching frequency of the inverter is quite low due to the high losses in the power devices. Real-time PWM strategies, which result in reduced harmonic distortion under low switching frequencies and have maximum possible DC bus utilisation, are developed for such drives in the present work. The space vector approach is taken up for the generation of synchronised PWM waveforms with 3-Phase Symmetry, Half Wave Symmetry and Quarter Wave Symmetry, required for high-power drives. Rules for synchronisation and the waveform symmetries are brought out. Thes

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9

Zhang, Richard S. "High Performance Power Converter Systems for Nonlinear and Unbalanced Load/Source." Diss., Virginia Tech, 1998. http://hdl.handle.net/10919/29314.

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This dissertation covers three levels of issues and solutions dealing with unbalanced and/or nonlinear situations in power electronic systems, namely power converter level, power converter system level, and large-scale power electronics system level. At power converter level, after review of traditional PWM methods, especially two-dimensional space vector modulation schemes, three-dimensional space vector modulation schemes are proposed for four-legged voltage source converters, including inverters and rectifiers. The four-legged power converters with three-dimensional space vector modulatio

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10

Cuadros, O. Carlos E. "Modified Space Vector Modulation for a Zero-Voltage Transition Three-Phase to DC Bi-directional Converter." Thesis, Virginia Tech, 1995. http://hdl.handle.net/10919/36712.

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A modified space vector modulation algorithm for a zero-voltage transition three-phase voltage source inverter/boost rectifier is presented. The converter is intended for high performance medium power applications requiring bi-directional power flow. The proposed modified space vector modulation allows the main switches to be operated with constant frequency and soft switching for any phase shift between the three-phase currents and voltages. The modulation algorithm also eliminates any low frequency distortion caused by the zero-voltage transition and can be extended to other soft-switching P

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11

Treharne, William. "The optimal application of common control techniques to permanent magnet synchronous motors." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:e8e2902a-d383-400f-9be0-bb3c11b3899c.

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Permanent magnet synchronous motors are finding ever increasing use in hybrid and electric vehicles. This thesis develops a new control strategy for Permanent Magnet Synchronous Motors (PMSMs) to reduce the motor and inverter losses compared to conventional control techniques. The strategy utilises three common control modes for PMSMs; brushless DC with 120°E conduction, brushless DC with 180°E conduction, and brushless AC control. The torque and power output for each control mode is determined for an example motor system using a three phase axial flux YASA motor and an IGBT inverter. The loss

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12

Krohn, Austin Bengoechea. "Electro-Thermal Dynamics and the Effects of Generalized Discontinuous Pulse Width Modulation Algorithms on High Performance Variable Frequency Drives." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1397643253.

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13

Carnielutti, Fernanda de Morais. "Estratégias de modulação para conversores multiníveis em cascata sob faltas." Universidade Federal de Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/8497.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Multilevel converters are being increasingly employed nowadays, specially in mediumand high-voltage industrial applications. Even though these converters are able to synthesize output line-to-line voltages with a high number of levels, close to a sinusoidal waveform, their modulation is more complex than the one for two- and three-level converters. In this context, this dissertation proposes new modulation strategies for multilevel converters, specifically symmetrical and asymmetrical cascaded multilevel ones, composed of many full

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14

Moraes, João Batista. "Estratégias de modulação por largura de pulso." reponame:Repositório Institucional da UFABC, 2016.

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Orientador: Prof. Dr. José Alberto Torrico Altuna<br>Dissertação (mestrado) - Universidade Federal do ABC, Programa de Pós-Graduação em Engenharia Elétrica, 2016.<br>O presente trabalho estuda as técnicas de modulação de inversores trifásicos com aplicação principal em controle de máquinas de indução. Na primeira parte é realizada a pesquisa bilbiográfica considerando as principais técnicas de modulação, sendo apresentado depois o princípio de funcionamento destes moduladores. A operação do inversor é estudada apresentando os sinais trifásicos gerados a partir de uma fonte de tensão C.C. É fei

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Nusair, Ibrahim Rakad. "Comparison Between PWM and SVPWM Three-Phase Inverters in Industrial Applications." Youngstown State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1355949821.

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Carnielutti, Fernanda de Morais. "Modulação space vector para conversores multiníveis com células assimétricas em cascata sob condições de faltas." Universidade Federal de Santa Maria, 2015. http://repositorio.ufsm.br/handle/1/3694.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This Thesis proposes a Space Vector Modulation for cascaded miltilevel converters with asymmetric cells under normal conditions and with faults in the power cells, avoiding converter saturation as much as possible. The switching state vectors and the voltage references are represented in the output line-to-line voltages coordinate system. Under this representation, the switching state vectors have only integer entries, easing the implementation of the proposed algorithm. The modulation is developed in a way such as to guarantee tha

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Johansson, Tomas. "Active rectification and control of magnetization currents in synchronous generators with rotating exciters : Implementation of the SVPWM algorithm using MOSFET technology." Thesis, Uppsala universitet, Elektricitetslära, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-257433.

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This thesis aims to design and build a power electronics system for the rectification and control of magnetization currents in synchronous generators with rotating exciters.The rotating exciter provides three-phase AC while the generator rotor needs DC with a high degree of control. The system needs to be able to rectify the three-phase AC to a stable DC without unwanted harmonic content, neither on the DC or the AC side. For control purposes it is also important that the current in the rotor can be changed very swiftly, preferably by several amperes during a single revolution ofthe machine.Th

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Mascarenhas, Manuel Maria Brás Pereira. "Speed control of induction machine based on direct torque control method." Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/9957.

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Dissertação para obtenção do Grau de Mestre em Engenharia Electrotécnica e de Computadores<br>Multi-level converters have been receiving attention in the recent years and have been proposed as the best choice in a wide variety of medium voltage applications. They enable a commutation at substantially reduced voltages and an improved harmonic spectrum without a series connection of devices, which is the main advantage of a multi-level structure. The use of multi-level inverters contributes to the performances amelioration of the induction machine control. In fact, the use of three level inver

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SHALINI. "DESIGN AND CONTROL OF CONVERTERS FOR SOLAR WATER PUMPING APPLICATION." Thesis, DELHI TECHNOLOGICAL UNIVERSITY, 2021. http://dspace.dtu.ac.in:8080/jspui/handle/repository/18895.

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This thesis presents designing and modelling of water pumping system powered by solar energy and comprising of BLDC motor drive. It manifests the performance comparison between Zeta, Sepic and Cuk converter based output conditioning of SPV array as well. As the solar insolation level is not constant, SPV array output is controlled using Maximum Power Point Tracking (MPPT) along DC-DC converter in order to ensure maximum power usage from SPV array. MPPT is implemented using Incremental Conductance (INC) algorithm along with Zeta, Sepic and Cuk converters to power BLDC motor drive. The D

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Nekvapil, Jan. "Řízení trojfázového asynchronního motoru." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228416.

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This theses concern proposal and implementation asynchronous motor control algorithm in the processor DSP56F807 from the manufacturer Freescale. The complex design of applicable control algorithm and suitable interconnection with processor and outer component is solved in this work. Integral part is also choosing of suitable power elements of inverter and sensors.

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Ustuntepe, Bulent. "A Novel Two-parameter Modulation And Neutral Point Potential Control Method For The Three-level Neutral Point Clamped Inverter." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606928/index.pdf.

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In this thesis, the neutral point potential drift/fluctuation of the three-level neutral point clamped inverter is analyzed and a novel control algorithm, the two-parameter PWM method is proposed to confine the neutral point potential variation to a very small range. The two-parameter PWM method provides superior neutral point potential control performance even with small DC bus capacitors. The method is based on PWM pulse pattern modification and requires no additional hardware. Detailed analytical models of the neutral point current and potential as a function of the modulation parameters ar

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Pou, Félix Josep. "Modulation and control of three-phase PWM multilevel converters." Doctoral thesis, Universitat Politècnica de Catalunya, 2002. http://hdl.handle.net/10803/6327.

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La present tesi doctoral estudia els inversors trifàsics multinivell del tipus denominat de díodes de fixació (diode-clamped converters). Aquests convertidors poden generar tres o més nivells de tensió a cada fase de sortida, i normalment s'apliquen a sistemes de gran potència ja que poden treballar amb tensions majors que els inversors clàssics. L'anàlisi es centra fonamentalment en la topologia de tres nivells, tot i que també es realitzen contribucions per a convertidors de més nivells. Els principals objectius són la proposta de nous algorismes de modulació vectorial PWM de processat ràpid

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Wu, Jia. "Implementation of a 100kW Soft-Switched DC Bus Regulator Based on Power Electronics Building Block Concept." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/32468.

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Power electronics building blocks (PEBBs) are standardized building blocks used to integrate power electronics systems. The PEBB approach can achieve low cost, high redundancy, high reliability, high flexibility and easy maintenance for large-scale power electronics systems. This thesis presents the implementation of a 100kW PEBB-based soft-switched bus regulator for an 800V DC distributed power system. The zero current transition (ZCT) soft-switching technique is used to improve the performance of the bus regulator by minimizing switching loss and improving overall efficiency. PEBB module

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Espindola, Marcos Fernando. "Estudo e implementação de inversor de tensão a três níveis com modulação em largura de pulsos por vetores espaciais aplicado ao controle vetorial de motor síncrono de imãs permanentes = Study and implementation of three level voltage inverter with space vector modulation by pulse width modulation applied to vector control of permanent magnet synchronous motor." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259011.

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Orientadores: Ernesto Ruppert Filho, Marcelo Gradella Villalva<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação<br>Made available in DSpace on 2018-08-21T14:53:53Z (GMT). No. of bitstreams: 1 Espindola_MarcosFernando_M.pdf: 5114547 bytes, checksum: 1601ee84cd6d17c671ba644a288c398d (MD5) Previous issue date: 2012<br>Resumo: Apresenta-se a implementação de um inversor trifásico de tensão a três níveis para ser utilizado no controle de velocidade de um motor síncrono trifásico a imãs permanentes usando o método de controle vetorial.

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Jiao, Yang. "High Power High Frequency 3-level NPC Power Conversion System." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/56653.

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The high penetration of renewable energy and the emerging concept of micro-grid system raises challenges to the high power conversion techniques. Multilevel converter plays the key role in such applications and is studied in detail in the dissertation. The topologies and modulation techniques for multilevel converter are categorized at first by a thorough literature survey. The pros and cons for various multilevel topologies and modulation techniques are discussed. The 3-level neutral point clamped (NPC) topology is selected to build a 200kVA, 20 kHz power conversion system. The modularized ph

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Gléba, Gergely. "Implementace algoritmů řízení elektrických motorů v systémech CompactRIO." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220195.

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This master’s thesis deals with the implementation of existing algorithms of electric AC motor control in Matlab Simulink to LabVIEW Control Design and Simulation. The first part of the thesis treats with the deduction of a mathematical model of an asynchronous motor, permanent magnet synchronous motor and with the theory of vector control of AC motors. In the next part there is a brief guide to create simulation algorithms in LabVIEW environment and to create the model of a motor with EMI functions in language C. The last part contains the comparison of Matlab Simulink and LabVIEW simulation

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Rabelo, joca Davi. "Une Topologie CA-CC Baseé sur un Convertisseur Modulaire Multiniveau Entrelacé Faisible à Applications de Transformateur d’Électronique de Puissance." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLC010/document.

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Ce travail concerne l'étude théorique,l’analyse numérique et la validationexpérimentale d'une topologie de convertisseurd’électronique de puissance basée sur unconvertisseur multiniveau modulaire entrelacéavec transformateur moyenne fréquence.L’architecture est adaptée pour l’étage deconversion AC-DC dans les applications detransformateur d'électronique de puissance pourla connexion entre un réseau alternatif moyennetension et un réseau continu basse tension.L’entrelacement réduit les pertes par conductiondans les interrupteurs. Le transformateurmoyenne fréquence 10 kHz assure une isolationgal

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Cuadros, Carlos Eduardo. "On the Circuit Oriented Average Large Signal Modeling of Power Converters and its Applications." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/11077.

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A systematic and versatile method to derive accurate and efficient Circuit Oriented Large Signal Average Models (COLSAMs) that approximate the slow dynamics manifold of the moving average values of the relevant state variables for Pulse-Width Modulated (PWM) dc to dc and three-phase to dc power converters is developed. These COLSAMs can cover continuous conduction mode (CCM) as well as discontinuous conduction mode (DCM) of operation and they are over one order of magnitude cheaper, computation wise, than the switching models. This method leads primarily to simple and effective input-output or

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Pavan, Rayana Siva. "Study of Induction Motor Drive With Indirect Vector Control Using Space Vector Pulse Width Modulation." Thesis, 2017. http://ethesis.nitrkl.ac.in/8946/1/2017_MT_RSPavan.pdf.

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Induction motors are thee starting point to design an electrical drivee system which is widely used in many industrial applications. Inn modern control theory, different mathematical models describe induction motor according to thee employed control methods. Vector control strategy can bee applied to this electrical motor type inn symmetrical three phase version or in unsymmetrical two phase version. The operation of the induction motor can be analyzed similar to a DC motor through this control method. With the Joint progress of thee power electronics and numerical electronics it is possible t

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Tzeng, Wei-Luen, and 曾威倫. "The research on the Space Vector Pulse Width Modulation Control IC." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/83011075255636066828.

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碩士<br>國立臺北科技大學<br>電機工程系碩士班<br>91<br>The main research of the thesis is based on Cell-based digital IC design flow, and use the TSMC 0.35um 1P4M cell library, to develop Space Vector Pulse Width Modulation（SVPWM）Control IC, and manufactured at S35_92C of the CIC’s advance chip. First , use the Hardware Description Language（VHDL）to encoding the system function, then use the compiler to make sure the syntax of the HDL is correct , after the Synthesis tool and auto place & routed tool and function simulation tool, make sure that every step is right, the design flow of the space vector m

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Wu, Yu-Ren, and 巫毓仁. "A Study on Three-Level Inverter with Space Vector Modulation Methods." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/x48yz2.

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碩士<br>國立高雄應用科技大學<br>電機工程系博碩士班<br>104<br>This thesis investigates the circuit topology of three-level T-Type inverters, and analyzes the principle of space vector modulation (SVM) method. Through the detailed study of three-level SVM, equivalent two-level SVM and the advanced bus-clamping methods, the performance of SVM in controlling the T-type inverter are analyzed, especially the advanced bus-clamping method in improving the output quality of the line current in the high modulation index is verified. MATLAB/Simulink software is adopted for the simulation. ALTERA’s software Quartus II is used

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Kuo, Wei-cheng, and 郭韋誠. "Direct torque control of induction motor drive using space vector modulation." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/83220186241000691731.

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碩士<br>正修科技大學<br>電機工程研究所<br>96<br>The advantage of the conventional direct torque control (DTC) method is that both torque and flux linkage can be controlled rapidly to get a better and faster speed response. Because of using only 8 fundamental voltage space-vectors, DTC easily induces the large ripple problems of the controlled torque and flux responses. Therefore, this thesis proposes a proportional-integral controller (PIC) for induction motor drive based on DTC and space-vector pulsewidth modulation, to solve these ripple problems. However, since PIC is sensitive to parameter uncertainties

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Tsai, Kun-Che, and 蔡昆哲. "FPGA Implementation of Space Vector Modulation for Neutral-Point-Clamped Inverters." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/32277407938499774739.

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碩士<br>國立高雄應用科技大學<br>電機工程系博碩士班<br>101<br>This thesis investigates the space vector modulation (SVM) applied to neutral-point-clamped inverters (NPC). The principle of space vector modulation is analyzed, and the MATLAB/Simulink/SimPowerSystems is used for constructing the circuit model and control module, simulation results of SVM with different switching sequence are compared, and the effect on neutral point voltage balancing, voltage utilization and harmonic distortion are discussed. Then, the ALTERA Quartus II software is used for constructing the control module of space vector modulation, a

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Yang, Ting Ou, and 歐陽霆. "A novel Space Vector Modulation strategy for quasi-Z-source inverters." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/6djxmw.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>105<br>Quasi-Z-source inverter (qZSI) features high compactness, low component and thermal stresses, continuous input current and the capability of simultaneously carry out both DC voltage boost and DC-AC inversion. For qZSIs, sinusoidal pulse width modulation (SPWM) method is typically applied. Comparing with SPWM, space-vector PWM (SVPWM) has advantages such as low current harmonics and high voltage utilization; hence, the traditional space-vector concept has been modiﬁed to be applicable for the qZSI in the literatures. In this thesis, a novel SVPWM strategy for q

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Babu, Amarlapudi Mahesh. "Direct Torque Control of BLDC Motor Using Space Vector Modulation Technique." Thesis, 2017. http://ethesis.nitrkl.ac.in/8915/1/2017_MT_AMBabu.pdf.

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Brushless DC Motors are used because of their higher efficiency, easy maintenance and high torque to inertia ratio. Several methods were proposed for better control of torque and current. Almost all the proposed techniques are complex and stator flux control is not considered in this technique due to this high-speed operations are not possible. The sensorless technique implemented is similar to Direct Torque control Technique for AC Motors This method controls torque directly and stator flux indirectly. The electric rotor position of the motor can be determined by using winding inductance, sta

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Kumar, Amit. "Improved Direct Torque Control of Induction Motor With Space Vector Modulation." Thesis, 2017. http://ethesis.nitrkl.ac.in/8923/1/2017_MT_AmitKumar.pdf.

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The Direct Torque Control (DTC) is a type of vector control technique which is used to regulate the torque and hence speed of an induction motor drive. This method is very efficient, cheap and is very easy to execute. The absence of mechanical speed estimators along with the ease of processing and computations make it the most preferred option among all vector control techniques. In this method, only the voltage and current are sensed and they are used to estimate the torque, flux and the angle between the rotor and stator flux. Depending on the torque and flux errors, a suitable voltage vecto

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Huang, Hsien-Ching, and 黃献清. "Research of Space Vector Pulse Width Modulation Method for the Matrix Converter." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/4kah8s.

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碩士<br>中華大學<br>電機工程學系<br>107<br>This study is use the Space Vector Pulse Width Modulation Method for the Matrix Converter, the relationship between the input current and the output voltage at each output frequency and amplitude modulation is analyzed in detail under the space vector pulse width modulation method. Compare the output efficiency and total harmonic distortion (THD) of the input current and the output voltage, on the matrix converter at 120∘switching mode and 180∘switching mode.

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Vafakhah, Behzad. "Multilevel Space Vector PWM for Multilevel Coupled Inductor Inverters." Phd thesis, 2010. http://hdl.handle.net/10048/1023.

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A multilevel Space Vector PWM (SVPWM) technique is developed for a 3-level 3-phase PWM Voltage Source Inverter using a 3-phase coupled inductor to ensure high performance operation. The selection of a suitable PWM switching scheme for the Coupled Inductor Inverter (CII) topology should be based on the dual requirements for a high-quality multilevel PWM output voltage together with the need to minimize high frequency currents and associated losses in the coupled inductor and the inverter switches. Compared to carrier-based multilevel PWM schemes, the space vector techniques provide a wider var

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Li, Chien-Hsinh, and 李建興. "Implementation of Space-Vector Pulse-Width-Modulation Inverter for Three-Phase Induction Motors." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/54609099884431307244.

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碩士<br>國立雲林科技大學<br>電機工程技術研究所<br>87<br>This thesis discusses the design and implementation of the three phase induction motor drive system using a space-vector pulse-width-modulation (SVPWM) strategy based on a voltage-source inverter(VSI). A variable frequency, variable voltage converter is applied for the system control in induction motors. This thesis is separated in two sections. First section introduces the implementation of IGBT protection circuit. A gate voltage controlled protection circuit is proposed to cut off the high fault current within short-circuit withstand time(near

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H, Tsai K., and 蔡坤隍. "The Space Vector Pulse Width Modulation Based of Synchronous Reluctance Motor Speed control." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/11349226861501050250.

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碩士<br>國立雲林科技大學<br>電機工程技術研究所<br>86<br>The synchronous reluctance motor(SRM) has the simple structure, easy controllability, no slip, and rotor without permanent magnets which has the advantages both of induction motor and brushless motor. Under the rising growth of power electron and powerful calculation of microprocessors, the AC motors have increasingly disentangled from the conventional analog controller, and develop toward the half-digital or full-digital controller. This thesis proposes a DSP based, variable speed system of synchronous reluctance motor. First, the construction,

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Saeedifard, Maryam. "Space Vector Modulation of Multi-level and Multi-module Converters for High Power Applications." Thesis, 2008. http://hdl.handle.net/1807/17261.

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This thesis presents and investigates Space Vector Modulation (SVM) switching strategies for (i) a multi-level Diode-Clamped Converter (DCC) and (ii) a multi-module Voltage-Sourced Converter (VSC) system in which each module is a conventional two-level VSC. Although the SVM strategies are general and applicable for n-level DCC and n-module VSC systems, this text only concentrates on five-level DCC and four-module VSC systems. For a five-level DCC, a computationally efficient SVM algorithm is proposed. The algorithm, that is based on a classifier Neural Network (NN), reduces the computational

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Chou, Jung-Ching, and 周榮慶. "Design and Implementation of Direct Torque Control with Voltage Space Vector Modulation on FPGA." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/zn277h.

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碩士<br>國立臺北科技大學<br>電機工程系研究所<br>98<br>The thesis is to design a direct torque control (DTC) system using vlotage space vector modulation (VSVM) method to decrease the ripple of torque and flux. Verilog hareware description language (HDL) is used to completed the hardware architecture. Finally, this system is implemented and verified on FPGA. The basic principle of this control system is to calculate the stator’s magnetism flux and torque by detecting the three-phase current, three-phase voltage and the rotor speed. By using the torque PI controller, magnetism flux PI controller, and coordinate t

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Liu, Kuo-Hsien, and 劉國賢. "Analysis and Implementation of a Novel Optimized Space Vector Modulation Strategy for Multilevel Inverter." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/49819057712954708632.

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碩士<br>國立雲林科技大學<br>電機工程系碩士班<br>95<br>Multilevel inverters have been widely used in the high power applications and various multilevel modulation strategies are developing gradually. Among them, space vector pulse width modulation (SVPWM) has better performance, high degree of design freedom and complicated modulation process. Implementation of the SVPWM for multilevel inverter is complicated, tedious and calculation numerously. This is due to the difficulty in determining the location of reference voltage , the calculation for each vector’s dwelling time numerously, and as the number of levels

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Zhang, You-Cheng, and 張祐誠. "Simulation and Implementation of Three Level Z-Source Inverters with Space Vector Modulation Method." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/61734789392372615346.

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碩士<br>國立高雄應用科技大學<br>電機工程系博碩士班<br>103<br>The Z-source inverter employs a unique impedance network and shoot through state to achieve boost voltage that overcome the limitations of the traditional voltage-source inverter. This thesis investigates the space vector modulation method for three-level Z-source inverters. Through the detailed study of shoot through state design and adopt an optimized switching sequence arrangement, this gives the benefit of without extra switching loss and lower output harmonic distortion. The proposed technique is demonstrated in simulation results from MATLAB/ Simul

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Yeh, Ming-Yang, and 葉名揚. "Research of the Space Vector Modulation Technique for the Four-Pole Voltage Source Converter." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/56517013342229135520.

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碩士<br>國立清華大學<br>電機工程學系<br>99<br>In the three phase four wire system, when systems are the unbalance load, it will cause the problems of zero sequence current and voltage. In order to improve this condition, the conventional method is to separate the DC-link capacitor, and inject the zero sequence current into the midpoint of the capacitor. However, this method will need the larger capacitor to eliminate the ripple of capacitor, and even worse, will reduce the lifetime of capacitor because of the effect of zero sequence current. Base on the above problems, this thesis proposes the method for a

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Kumar, Vudatha Vinod. "Analysis of Induction Motor Drive With Direct Torque Control Scheme Using Space Vector Modulation." Thesis, 2015. http://ethesis.nitrkl.ac.in/7642/1/96.pdf.

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Direct torque control (DTC) is one in all the foremost wonderful management methods of torque control of the induction motor. The aim is to regulate effectively the torque and flux. Torque control of associate induction motor (IM) supported DTC strategy is a developed and a comprehensive study which is made during this project. Direct torque management is that the 1st technology to regulate the important control variables of torque and flux. This methodology makes the rotor more accurate and quick management, high dynamic speed response and easy to regulate. The reference value may be calculat

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Myna, Bandi. "Direct Power Control of Three-Phase PWM Rectifier using Space- Vector Modulation (DPC- SVM)." Thesis, 2017. http://ethesis.nitrkl.ac.in/8914/1/2017_MT_BMyna.pdf.

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This work provides a control strategy for PWM rectifiers using space vector modulation technique by keeping the switching frequency as constant. Instead of using line currents as control variables here instantaneous active and reactive power are used as signals for modulation of PWM rectifiers. In traditional control methods like VDPC and VFDPC, we are having line voltage estimator and virtual flux estimator. Here virtual flux estimator and line voltage estimator are replaced with Phase Locked Loop for better performance in distorted conditions at source side. The strategy of direct power cont

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Hari, V. S. S. Pavan Kumar. "Comparative Evaluation Of Space Vector Based Pulse Width Modulation Techniques In Terms Of Harmonic Distortion And Switching Loss." Thesis, 2008. https://etd.iisc.ac.in/handle/2005/868.

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Voltage source inverters (VSI) are popular in variable speed induction motor drive applications. Pulse width modulation (PWM) is employed to achieve variable voltage variable frequency output from a fixed DC bus voltage. The modulation method greatly influences the harmonic distortion in line current and the inverter switching loss. This thesis evaluates a few space vectorbased PWM techniques which reduce the harmonic distortion and/or the inverter switching loss, compared to conventional space vector PWM (CSVPWM), at a given average switching frequency. In space vector-based PWM, the averag

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Hari, V. S. S. Pavan Kumar. "Comparative Evaluation Of Space Vector Based Pulse Width Modulation Techniques In Terms Of Harmonic Distortion And Switching Loss." Thesis, 2008. http://hdl.handle.net/2005/868.

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Voltage source inverters (VSI) are popular in variable speed induction motor drive applications. Pulse width modulation (PWM) is employed to achieve variable voltage variable frequency output from a fixed DC bus voltage. The modulation method greatly influences the harmonic distortion in line current and the inverter switching loss. This thesis evaluates a few space vectorbased PWM techniques which reduce the harmonic distortion and/or the inverter switching loss, compared to conventional space vector PWM (CSVPWM), at a given average switching frequency. In space vector-based PWM, the average

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Wei, Zuo-Ying, and 魏佐穎. "Design and Implementation of a Sensorless IPMSM Drive System Using Space Vector Modulation Compensation Method." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/4jpwcq.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>107<br>This thesis investigates the rotor position/speed estimation using space-vector modulation compensation method and the predictive speed-loop controller design for interior permanent magnet synchronous motor drive systems. By computing the three-phase current slopes, the rotor position and speed of the motor can be estimated. The duty cycles of the active vectors could be too small; as a result, it is impossible to obtain the current-slopes of the active vectors when the motor is operated at standstill or low-speed operating region. An extension and compensatio

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