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Dissertations / Theses on the topic 'Space vector PWM and DSP'

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Published: 4 June 2021

Last updated: 4 February 2022

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1

Zhang, Yong. "A DSP based variable-speed induction motor drive for a revolving stage." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/273.

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Variable speed drive technology has advanced dramatically in the last 10 years with the advent of new power devices. In this study, a three phase induction motor drive using Insulated Gate Bipolar Transistors (IGBT) at the inverter power stage is introduced to implement speed and position control for the revolving stage in the Frederic Wood Theatre This thesis presents a solution to control a 3-phase induction motor using the Texas Instruments (TI) Digital Signal Processor (DSP) TMS320F2407A. The use of this DSP yields enhanced operations, fewer system components, lower system cost and increa

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2

Nascimento, Bruno Moreira. "Implementação de um controle digital para o compensador regenerativo de potência ativa /." Ilha Solteira : [s.n.], 2009. http://hdl.handle.net/11449/87086.

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Orientador: Dionizio Paschoareli Junior<br>Banca: Falcondes Jose Mendes de Seixas<br>Banca: Hari Bruno Mohr<br>Resumo: A tendência dos sistemas de energia elétrica é uma operação cada vez mais próxima de seus limites operacionais. A presença de equipamentos que utilizam a eletrônica de potência, no controle e condicionamento da energia, é cada vez mais freqüente. A utilização de conversores como fonte de tensão, associados a elementos armazenadores de energia como, por exemplo, a bateria de sódio-enxofre, com alta densidade de energia, alta eficiência na carga e descarga e ainda um longo ciclo

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3

Nascimento, Bruno Moreira [UNESP]. "Implementação de um controle digital para o compensador regenerativo de potência ativa." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/87086.

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Made available in DSpace on 2014-06-11T19:22:32Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-05-28Bitstream added on 2014-06-13T20:09:45Z : No. of bitstreams: 1 nascimento_bm_me_ilha.pdf: 1604913 bytes, checksum: f565cd826c9093459f7a60aa26c658fb (MD5)<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)<br>A tendência dos sistemas de energia elétrica é uma operação cada vez mais próxima de seus limites operacionais. A presença de equipamentos que utilizam a eletrônica de potência, no controle e condicionamento da energia, é cada vez mais freqüente. A utilização

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4

Bergas, Jané Joan. "Control del motor d'inducció considerant els límits del convertidor i del motor." Doctoral thesis, Universitat Politècnica de Catalunya, 2000. http://hdl.handle.net/10803/6293.

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1.1 Objectius de la tesi.<br/>En els últims anys el control del parell i de la velocitat del motor d'inducció ha estat llargament estudiat. Un cop s'ha considerat que les prestacions dinàmiques assolibles eren ja suficientment satisfactòries, els diferents investigadors han reorientat els seus esforços cap a altres enfocs relacionats, ja no únicament amb el MI estrictament parlant, sinó amb tot el sistema que constitueix l'accionament amb si mateix.<br/><br/>L'objectiu principal d'aquesta tesi és posar en evidència, l'existència d'unes idealitzacions i limitacions dels controls tradicionals de

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5

Engku, Ariff E. A. R. B. "Space vector Pwm techniques for six-phase three-level inverter-fed drives." Thesis, Liverpool John Moores University, 2018. http://researchonline.ljmu.ac.uk/7982/.

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In recent years, research in the area of multiphase drives has increased significantly. Having higher number of machine phases allows the current to be shared between the phases, thus reducing the current rating of power semiconductors used in the power converter. Additionally, if a multilevel inverter is used to drive the machine, the output voltage waveforms are going to be approximated closer toward sinusoidal waveforms, thus resulting in lower total harmonic distortion. Therefore, the combination of multiphase and multilevel technologies gives considerable benefits compared to conventional

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6

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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7

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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8

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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9

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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10

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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11

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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12

Venugopal, S. "Study On Overmodulation Methods For PWM Inverter Fed AC Drives." Thesis, Indian Institute of Science, 2006. http://hdl.handle.net/2005/278.

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A voltage source inverter is commonly used to supply a variable frequency variable voltage to a three phase induction motor in a variable speed application. A suitable pulse width modulation (PWM) technique is employed to obtain the required output voltage in the line side of the inverter. Real-time methods for PWM generation can be broadly classified into triangle comparison based PWM (TCPWM) and space vector based PWM (SVPWM). In TCPWM methods such as sine-triangle PWM, three phase reference modulating signals are compared against a common triangular carrier to generate the PWM signals for

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13

Pouresmaeil, Edris. "Advance control of multilevel converters for integration of distributed generation resources into ac grid." Doctoral thesis, Universitat Politècnica de Catalunya, 2012. http://hdl.handle.net/10803/83364.

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Distributed generation (DG) with a converter interface to the power grid is found in many of the green power resources applications. This dissertation describes a multi-objective control technique of voltage source converter (VSC) based on multilevel converter topologies, for integration of DG resources based on renewable energy (and non-renewable energy)to the power grid. The aims have been set to maintain a stable operation of the power grid, in case of di erent types of grid-connected loads. The proposed method provides compensation for active, reactive, and harmonic load current co

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14

Karaduman, Ferdi. "Adaptive Control Of Dc Link Current In Current Source Converter Based Statcom For Improving Its Power Losses." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615310/index.pdf.

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In conventional three-phase PWM (Pulse Width Modulation) current source converter based STATCOM (Static Synchronous Compensator) applications, DC link current is kept constant at a predefined value and the reactive power of STATCOM is controlled by varying modulation index. This control strategy causes unnecessary power losses especially when the reactive power of STATCOM is low. For this purpose, in order to reduce the active power drawn by STATCOM, the modulation index can be maximized by adjusting DC link current. Within the scope of this thesis, an adaptive control of DC link current will

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15

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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16

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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17

Demirkutlu, Eyyup. "Output Voltage Control Of A Four-leg Inverter Based Three-phase Ups By Means Of Stationary Frame Resonant Filter Banks." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608151/index.pdf.

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A method for high performance output voltage control of a four-leg inverter based three-phase transformerless UPS is proposed. Voltage control loop is employed and the method employs stationary frame resonant filter controllers for the fundamental and harmonic frequency components. A capacitor current feedback loop provides active damping and enhances the output voltage dynamic performance. The controller design and implementation details are given. Linear and nonlinear loads for balanced and unbalanced load operating conditions are considered. The steadystate and dynamic performance of the UP

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18

Cetinkaya, Suleyman. "Repetitive Control Of A Three-phase Uninterruptible Power Supply With Isolation Transformer." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608150/index.pdf.

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A repetitive control method for output voltage control of a three phase uninterruptible power supply (UPS) with isolation transformer is investigated. In the method voltage control loop is employed in the stationary dq frame. The controller eliminates the periodic errors on the output voltages due to inverter voltage nonlinearity and load disturbances. The controller design and implementation details are given. The controller is implemented on a 5-kVA UPS prototype which is constructed in laboratory. Linear and nonlinear loads for balanced and unbalanced load operating conditions are considere

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19

Pijáček, Ondřej. "Univerzální řídicí jednotka pro BLDC motory." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-240819.

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This thesis describes the design of universal control unit for BLDC motor powered from airplane power distribution system of 28 V capable of driving motor up to 10 A. The maximal engine power is about 250 W. Important prerequisite is possibility of driving various motor size without needs of changing wiring board using only the configuration in the auxiliary memory unit. To control different motors is enough one unit with one program without any way to interfere to the unit itself.

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20

Bareš, Jiří. "Návrh a realizace aktivního trojfázového usměrňovače." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-242023.

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This work deals with three-phase active rectifier control. In first, theoretical part it describes several control strategies with focus on voltage oriented control. For this type of control a design is worked out, and created model and its simulation is described. Second, practical part deals with realisation on microcontroller TMS320F28335, which is main processing unit of device lent by company Elcom. Therefore in this part abilities and settings of the controller along with developped control algorithm are described. Reached results of measurement are then presented and in the conclusion t

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21

Jung, Jin Woo. "Modeling and control of fuel cell based distributed generation systems." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1116451881.

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Thesis (Ph. D.)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formatted into pages; contains xvi, 209 p.; also includes graphics. Includes bibliographical references (p. 202-209). Available online via OhioLINK's ETD Center

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22

Li, Wen Ao, and 李文翱. "Experiment and analysis of a DSP application for space vector PWM and shaft sensorless speed control of AC induction motor." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/41298195749142867727.

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23

陳宏亮. "Space vector PWM inverter for induction motor." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/80902045781543702812.

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24

wu, chin-chung, and 吳錦長. "Space-Vector PWM and Soft-Switching Inverter Design." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/31901818179071106165.

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碩士<br>國立交通大學<br>電機與控制工程系<br>87<br>Soft-switching techniques ( zero current switching or zero voltage switching ) applied to power inverter can substantially improve the performances, allowing high frequency operation and minimization of acoustic noise and EMI, reduction of switching losses, limitation of dv/dt and di/dt stress in the power devices .The quasi-resonant dc link soft switching circuit used in this paper needs additional components such as two switches, a diode, an inductor and a capacitor, the two switches are also soft switching, which produces a minimum losses. The quasi-reson

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25

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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Ta-Sen, Cheng, and 鄭大森. "A study on space vector PWM for voltage source inverter." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/91600839215347623110.

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Tsay, Tian-Song, and 蔡天送. "Design and Implementation of CPLD Based Space Vector PWM Control ICs." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/58670221699880026739.

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碩士<br>義守大學<br>電機工程學系<br>87<br>Pulse Width Modulation (PWM) is the most widely used technology for power transition. It is the necessary element in the applications of motor drivers and uninterrupted power suppliers. The disadvantage of large dimensions, lots of elements and affection from temperature exists in the classical analog PWM. To improve it, the digital signal processors are used to implement the digital PWM. However, the complex calculations cause the sampling time increased and enlarge the distortion of output waveform. Now, the new chip of ASIC can focus all functions in one chip.

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28

Basu, Kaushik. "Minimization Of Torque Ripple In Space Vector PWM Based Induction Motor Drives." Thesis, 2005. http://etd.iisc.ernet.in/handle/2005/1435.

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29

Hsu, Hau-Jean, and 許皓鈞. "Design and Implementation of an FPGA-Based Space Vector PWM Motor Control IC." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/90156142505810615251.

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Xu, Hao-Jun, and 許皓鈞. "Design and Implementation of an FPGA-Based Space Vector PWM Motor Control IC." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/13592395892757977585.

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31

Ho, Kun-Tai, and 何坤泰. "A Novel Single Shunt Current Sensing for Space-Vector PWM Inverters of a PMSM." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/01936801315311009807.

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碩士<br>國立交通大學<br>電控工程研究所<br>102<br>The thesis proposed a single shunt register current sensing method of the Space Vector Pulse Width Modulation (SVPWM) Inverters for Permanent Magnet Synchronous Motors (PMSM). It is based on the measurement of the current through the shunt resistor that it puts in the dc bus of the inverter. The sampling timing is provided by the switch electronic signals of the transistors. Then, the three-phase current is used to calculate the rotor position and the velocity and implement the Field Oriented Control (FOC). Some aspects involving the non-ideal behavior of th

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YuChen and 陳譽. "Space Vector Based Hybrid PWM Applied to Current Ripple Reduction for Micro-Turbine Generator Operation." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/wut4p2.

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33

Ming, Joung-Jenn, and 莊振銘. "Design and Simulation of an Induction Servo System Driven by a Volatage Space Vector PWM Inverter." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/44333013544765058809.

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碩士<br>國立臺灣科技大學<br>工程技術研究所<br>81<br>We discuss the simulation and design of the driver system of the induction servo motor in the one of the essay. Induction motor control is by the voltage vector space modulation method. The control system applies the algorithm of synchrous coordinate. The content of the essay include of the voltage vector space modulation ,the simulation of open loop and close loop induction motor control.Specially,the open loop induction motor control adopted the method o

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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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Gao, Jia Rong, and 高家榮. "Study of servo driving of the induction motor atlow speed by using flux space vector pwm." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/25198755747279991296.

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Wu, Han-Hung, and 吳漢宏. "Space Vector PWM Control for 3kW Brushless Motor Driver Design and Application for Novel Parallel Hybrid Electric Vehicles." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/65016355890181737338.

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碩士<br>大葉大學<br>機械工程研究所碩士班<br>96<br>In recent years, owing to the environmental protection concept has risen and global warming, it is important to reduce the environmental pollution. If the merits of both internal combustion engine and permanent magnet synchronous motor (PMSM) can be integrated to become a hybrid electric vehicle, it must have ultra-low pollution and energy-saving but still keeping high performance. For this reason, the central purpose of this thesis is to develop a novel parallel hybrid electric vehicle system driver and controller. Electronic motor control systems used by ext

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Rakesh, P. R. "PWM Techniques for Split-Phase Induction Motor Drive." Thesis, 2014. http://hdl.handle.net/2005/3136.

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A split-phase induction motor (SPIM) is obtained by splitting each of the three-phase stator windings of an induction motor into two equal halves. This results in two sets of three-phase windings with a spatial angle diﬀerence of 30◦ (electrical) between them. The two sets of windings are fed from two diﬀerent voltage-source inverters for speed control of the split-phase motor drive. Low dc bus voltage requirement and improved torque profile are some of the advantages of the split-phase motor, compared to the normal three-phase induction motor. A pulse width modulation (PWM) technique is used

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Das, Anandarup. "Investigations On Dodecagonal Space Vector Generation For Induction Motor Drives." Thesis, 2009. http://hdl.handle.net/2005/1034.

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Multilevel converters are finding increased attention in industry and academia as the preferred choice of electronic power conversion for high power applications. They have a wide application area in a variety of industries involving transportation and energy management, a significant portion of which comprises of multilevel inverter fed induction motor drives. Multilevel inverters are ideally suitable for high power drives, since the switching frequency of the devices is limited for high power applications. In low power drives, the switching frequency is often in the range of tens of kHz, so

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Hari, V. S. S. Pavan Kumar. "Space-Vector-Based Pulse Width Modulation Strategies To Reduce Pulsating Torque In Induction Motor Drives." Thesis, 2014. http://etd.iisc.ernet.in/handle/2005/2441.

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Voltage source inverter (VSI) is used to control the speed of an induction motor by applying AC voltage of variable amplitude and frequency. The semiconductor switches in a VSI are turned on and off in an appropriate fashion to vary the output voltage of the VSI. Various pulse width modulation (PWM) methods are available to generate the gating signals for the switches. The process of PWM ensures proper fundamental voltage, but introduces harmonics at the output of the VSI. Ripple in the developed torque of the induction motor, also known as pulsating torque, is a prominent consequence of the h

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Wu, Tian-yau, and 吳天堯. "A DSP-based Adaptive Active Noise Control System in A Duct by Using The L1 And L2 Vector Space Optimization Techniques." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/12196214349578552690.

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Kaarthik, R. Sudharshan. "Multilevel Dodecagonal Space Vector Structures and Modulation Schemes with Hybrid Topologies for Variable Speed AC Drives." Thesis, 2015. http://etd.iisc.ernet.in/handle/2005/2765.

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MULTILEVEL inverters are the preferred choice of converters for electronic power conversion for high power applications. They are gaining popularity in variety of industrial applications including electric motor drives, transportation, energy management, transmission and distribution of power. A large portion of energy conversion systems comprises of multilevel inverter fed induction motor drives. The multilevel inverters are ideal for such applications, since the switching frequency of the devices can be kept low. In conventional two level inverters, to get nearly sinusoidal phase current wav

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Boby, Mathews. "Multilevel Dodecagonal and Octadecagonal Voltage Space Vector Structures with a Single DC Supply Using Basic Inverter Cells." Thesis, 2017. http://etd.iisc.ernet.in/2005/3712.

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Multilevel converters have become the direct accepted solution for high power converter applications. They are used in wide variety of power electronic applications like power transmission and distribution, electric motor drives, battery management and renewable energy management to name a few. For medium and high voltage motor drives, especially induction motor drives, the use of multilevel voltage source inverters have become indispensible. A high voltage multilevel inverter could be realized using low voltage switching devices which are easily available and are of low cost. A multilevel inv

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Lakshminarayanan, Sanjay. "Generation Of 12-Sided And 18-Sided Polygonal Voltage Space Vectors For Inverter Fed Induction Motor Drives By Cascading Conventional Two-Level Inverters." Thesis, 2007. http://hdl.handle.net/2005/693.

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Multi-level inverters play a significant role in high power drive systems for induction motors. Interest in multi-level inverters started with the three-level, neutral point clamped (NPC) inverter. Now there are many topologies for higher number of levels such as the, flying capacitor and cascaded H-bridge etc. The advantage of multi-level inverters is the reduced voltage stress on the switching devices, lower dv/dt and lower harmonic content. The voltage space vector structure in a multi-level inverter has a hexagonal periphery similar to that in a two-level inverter. In the over-modulation

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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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Kanchan, Rahul Sudam. "Investigations On PWM Signal Generation And Common Mode Voltage Elimination Schemes For Multi-Level Inverter Fed Induction Motor Drives." Thesis, 2005. http://etd.iisc.ernet.in/handle/2005/1405.

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Dey, Anubrata. "Investigations on Online Boundary Variation Techniques for Nearly Constant Switching Frequency Hysteresis Current PWM Controller for Multi-Level Inverter Fed IM Drives." Thesis, 2012. http://hdl.handle.net/2005/3161.

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In DC to AC power conversion, voltage source inverters (VSI) based current controllers are usually preferred for today’s high performance AC drive which requires excellent dynamic and steady state performances at different transient and load conditions, with the additional advantages like inherent short circuit and over current protection. Out of different types of current controllers, hysteresis controllers are widely used due to their simplicity and ability to meet the requirements for a high performance AC drives. But the conventional hysteresis controllers suffers from wide variation of PW

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Baiju, M. R. "Investigations On Multilevel Inverter Topologies And Modulation Schemes For Induction Motor Drives." Thesis, 2004. http://hdl.handle.net/2005/1126.

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48

Pappu, Roshan Kumar. "Studies on Single DC Link Fed Multilevel Inverter Topologies by Cascading Flying Capacitor and Floating Capacitor Fed H-Bridges." Thesis, 2014. http://hdl.handle.net/2005/3189.

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Use of multilevel inverters are inevitable in medium and high voltage drives. This is due to the fact that the multilevel inverters can produce voltages in smaller steps which will reduce the harmonic content and result in more sinusoidal voltages and currents as compared to voltages and currents from two-level inverters. Due to the device limitations, use of two-level inverters is not possible in medium and high voltage drive applications. Though multiple devices can be connected both in series and parallel to achieve two-level operation, the output voltages still suﬀer from high harmonic con

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Tripathi, Avanish. "Low Switching Frequency Pulse Width Modulation for Induction Motor Drives." Thesis, 2017. http://etd.iisc.ernet.in/2005/3688.

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Induction motor (IM) drives are employed in a wide range of industries due to low maintenance, improved efficiency and low emissions. Industrial installations of high-power IM drives rated up to 30 MW have been reported. The IM drives are also employed in ultra high-speed applications with shaft speeds as high as 500; 000 rpm. Certain applications of IM drives such as gas compressors demand high power at high speeds (e.g. 10 MW at 20; 000 rpm). In high-power voltage source inverter (VSI) fed induction motor drives, the semiconductor devices experience high switching energy losses during switc

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Sivaprasad, Sreenivasa J. "Control, Modulation and Testing of High-Power Pulse Width Modulated Converters." Thesis, 2013. http://etd.iisc.ernet.in/2005/3310.

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Experimental research on high-power converters, particularly in an academic environment, faces severe infrastructural constraints. Usually, power source and loads of required ratings are not available. Further, more importantly, the energy consumption is huge. One possibility is to establish an experimental research platform, comprising of a network of high-power converters, through which power is circulated and which draws only the losses from the mains. This work deals with the establishment of a circulating power test set-up, comprising of two line-side PWM converters, inclusive of contro

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