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Dissertations / Theses on the topic 'DTC (direct torque control)'

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Published: 4 June 2021

Last updated: 25 July 2025

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1

Abdollahzadeh, Zare Mohammad. "FPGA-Based Simulation and Implementation of Induction Motor Torque Control Systems Based on Direct Torque Control (DTC)." Thesis, North Dakota State University, 2014. https://hdl.handle.net/10365/27275.

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Electric drives for induction machines are of great importance because of the popularity of this machine type. To design, simulate and implement such drives, fast, reliable digital signal processors are needed. Recently Field Programmable Gate Array (FPGA) has been used in electric drive applications. This is mostly because of higher flexibility of hardware solutions compared to software solutions. In this thesis, FPGA-based simulation and implementation of direct torque control (DTC) of induction motors are studied. DTC is simulated on an FPGA as well as a personal computer. Results prove the

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2

Arias, Pujol Antoni. "Improvements in direct torque control of induction motors." Doctoral thesis, Universitat Politècnica de Catalunya, 2001. http://hdl.handle.net/10803/6317.

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This thesis is mainly devoted to the investigation of speed control methods for three phase cage induction motors with particular emphasis being given to Direct Torque Control (DTC) improved techniques.<br/>Classical Direct Torque Control has inherent disadvantages such as: problems during starting resulting from the null states, the compulsory requirement of torque and flux estimators, and torque ripple. In the classical DTC induction motor drive a voltage vector is applied for the entire period, and this causes the stator current and electromagnetic torque exceeds its reference value early d

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3

Ozturk, Salih Baris. "Direct torque control of permanent magnet synchronous motors with non-sinusoidal back-EMF." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2728.

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4

Bouwer, Pieter. "Modelling, design and implementation of a small-scale, position sensorless, variable speed wind energy conversion system incorporating DTC-SVM of a PMSG drive with RLC filter." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80242.

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Thesis (MScEng)--Stellenbosch University, 2013.<br>Wind energy has proven to be a viable source of clean energy, and the worldwide demand is growing rapidly. Variable speed topologies, with synchronous generators and full-scale converters, are becoming more popular, and the e ective control of these systems is a current trend in wind energy research. The purpose of this study is the modelling, design, simulation and implementation of a small-scale, variable speed wind energy conversion system, incorporating the position sensorless direct torque control with space vector modulation, of a

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5

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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6

Hořava, Jan. "Modelování a simulace vektorového řízení EC motorů v prostředí Simulink." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229792.

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The main goal of my work is the electrically commutated motor with the vector control’s application in the environment of Matlab – Simulink. The theoretical preamble of this document is dedicated to the physical construction of the EC motors. The most common methods are described in the following text – namely it is scalar control, direct torque control and vector control. The conclusion of this work includes the description and analyse of the single parts of a created model of concrete EC motor with the vector control, and simulations results’ evaluation.

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7

He, Lijun. "Analysis of the dynamics of the linear-and-rotary-motion energy-conversion systems with active DC excitation." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54417.

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The objective of the dissertation is to develop simplified analytical models for typical linear-motion and rotary-motion energy-conversion systems under active DC excitation without tedious numerical-simulation effort, and provide practical implementation of the models in optimal-design and thermal-protection aspects. The model of a vacuum automatic circuit recloser (a typical linear-motion system under DC excitation) is first developed in the form of a non-linear discontinuous eighth-order dynamic system. The model is then used to simulate the transient mechanical and electromagnetic perform

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8

Bouallaga, Kamel. "Contribution à l'optimisation de la commande d'un alternateur-démarreur pour automobile." Paris 6, 2003. http://www.theses.fr/2003PA066029.

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9

Hrnčárek, Martin. "Moderní struktury řízení servosystémů se střídavými pohony." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218311.

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This master thesis deals with the modern algorithms of the asynchronous induction machine and permanent magnet induction machine. It focuses at vector control, direct torque control and input-output feedback linearization. It also describes a library creation and its usages in the Matlab – Simulink environment. The final part of this thesis contains an implementation of chosen algorithms on the DSC Freescale 56F800E family.

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10

Magalhães, Pedro Mendes de Lacerda Peixoto de. "Direct torque control em máquinas assíncronas." Master's thesis, Faculdade de Ciências e Tecnologia, 2009. http://hdl.handle.net/10362/3977.

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Dissertação apresentada na Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para obtenção do grau de Mestre em Engenharia Electrotécnica e de Computadores<br>Este trabalho incide sobre o DTC (Direct Torque Control ), técnica de controlo de máquinas eléctricas(polifásicas) de corrente alternada, em particular a máquina assíncrona, e o seu objectivo é construir bases para trabalho futuro nesta área, nomeadamente através da análise crítica dos componentes elementares da técnica e seu desempenho. A realização deste trabalho prevê o estudo teórico do método de controlo e avaliação

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11

Abdalla, Abdelnassir. "Torque Ripple Minimization in Direct Torque Control of Induction Machines." University of Akron / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=akron1116121267.

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12

Alam, S. M. Mahfuz. "Direct Torque Control of AC Machine Drives." Thesis, Southern Illinois University at Edwardsville, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10128872.

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<p> Field oriented control (FOC) and direct torque control (DTC) are the two most important control strategies for modern advanced machine drives. Field oriented control (FOC) has been widely used as the industrial motor drives. The direct torque control has been recently developed by Takashi and has shown great potential in machine drive applications. This thesis discusses the performances of direct torque control on AC machine drives including the industrial workhorse induction machines (IM) and permanent magnet synchronous machines (PMSM). Both of the IM and PMSM dynamics models are derived

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13

Lüdtke, Ingo. "The direct torque control of induction motors." Thesis, University of South Wales, 1998. https://pure.southwales.ac.uk/en/studentthesis/the-direct-torque-control-of-induction-motors(5b85e666-04b6-493b-b615-c5e2144d03c6).html.

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This thesis is mainly devoted to the investigation of speed control methods of three phase, cage rotor induction motors with particular emphasis being given to vector control and direct torque control techniques. Modern control strategies such as vector control and direct torque control are investigated as well as the conventional methods such as open loop (constant V/f) operation. A number of different pulse width modulation (p.w.m.) waveform generation strategies are simulated and discussed and their application to the above speed control systems fully investigated. A 3kW, three phase induct

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14

Bermúdez, guzmán Mario. "Novel control techniques in multiphase drives : direct control methods (DTC and MPC) under limit situations." Thesis, Paris, ENSAM, 2018. http://www.theses.fr/2018ENAM0061/document.

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Les entraînements électriques polyphasés ont acquis une importance particulière ces derniers temps pour leur utilisation dans des applications où la fiabilité présente un intérêt pour des raisons économiques et de sécurité. Cette thèse se centre sur le développement de techniques de commande en mode instantané pour contrôler de manière optimale les machines polyphasées, en analysant leur tolérance dans différentes conditions de fonctionnement, telles que lors de l’atteinte de limites électriques (limites de tension, de courant et de niveau maximum de magnétisation) ou de défauts de type phase

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15

del, Toro GarciÌa Xavier. "Improvements in direct torque control of induction motors." Thesis, University of South Wales, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.446106.

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16

Okumus, Halil Ibrahim. "Improved direct torque control of induction machine drives." Thesis, University of Bristol, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364958.

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17

Tsoutsas, Athanasios. "Designing a sensorless torque estimator for direct torque control of an induction motor." Thesis, Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Sep/09Sep%5FTsoutsas.pdf.

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Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, September 2009.<br>Thesis Advisor(s): Julian, Alexander L. "September 2009." Description based on title screen as viewed on November 5, 2009. Author(s) subject terms: Induction Motor, Electromagnetic Torque Estimator, Field Programmable Gate Array (FPGA), XILINX. Includes bibliographical references (p. 59). Also available in print.

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18

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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19

Ocen, David. "Direct Torque Control of a Permanent Magnet synchronous Motor." Thesis, KTH, Reglerteknik, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-109456.

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This work presents an improved variant of the Direct Torque Control (DTC) for a Permanent Magnet Synchronous Motor (PMSM). The improved DTC use a higher number of voltage space vectors by introducing a kind of Space Vector Modulation technique. The higher number of space vectors are tabulated in more precise switch tables which also take the emf induced in the stator windings into account. The emf voltage significantly affect the motor behavior from a given space vector. It is discussed how the switch tables are constructed. Experiments from the classical and improved DTC are compared and show

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20

Yu, Jian. "Direct torque control of brushless doubly-fed reluctance machines." Thesis, Northumbria University, 2004. http://nrl.northumbria.ac.uk/897/.

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Theoretical and Experimental results of research on the Direct Torque Control (DTC) of the Brushless Doubly Fed Reluctance Machine (BDFRM) are presented in this thesis. The main motivation for this work has been found in the relative simplicity of the DTC strategy and attractive properties of the BDFRM drive, foremost its cost-effectiveness associated with the use of a partially rated power electronics, and reliability of brushless structure of the machine itself. It is hoped that the project outcomes will be extremely helpful to the further study of the machine in light of its application in

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21

Liu, Yong. "Direct torque control of permanent magnet brushless AC/DC drives with reduced torque ripple." Thesis, University of Sheffield, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.630444.

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22

Wong, Wallace Shung Hui. "Improved direct torque control and robust adaptive control of induction motor drives." Thesis, University of Bristol, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271811.

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23

Li, Yaohua [Verfasser]. "Direct Torque Control of Permanent Magnet Synchronous Machine / Yaohua Li." Aachen : Shaker, 2010. http://d-nb.info/1081886862/34.

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24

Pham-Dinh, Truc. "Direct torque control of induction machines considering the iron losses." Thesis, Liverpool John Moores University, 2003. http://researchonline.ljmu.ac.uk/4969/.

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25

Ortega, Garcia Carlos. "Direct torque control of permanent magnet synchronous machines using Matrix Converters." Doctoral thesis, Universitat Politècnica de Catalunya, 2008. http://hdl.handle.net/10803/22732.

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La demanda d’aplicacions industrials avançades, fa que el control de màquines elèctriques de corrent altern (AC) sigui una disciplina contínuament creixent per satisfer l’alt nivell d’exigència. Tradicionalment, la màquina d’inducció (IM) ha estat la més utilitzada en aplicacions industrials de velocitat variable, incloent-ne bombes i ventiladors, màquines tèxtils i de paper, vehicles elèctrics, generació eòlica, etc. A més dels requeriments funcionals, l’estalvi energètic és, actualment, un aspecte a tenir en compte en aplicacions de velocitat variable. Una alternativa molt atractiva a la

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26

Abosh, Atheer. "Direct and indirect torque control of unbalanced permanent magnet synchronous machines." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/15245/.

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Electrical machines may exhibit various types of imbalances and undesirable harmonic distortions. These may increase the torque and flux ripples, acoustic noise, unbalanced three-phase currents, while also reducing efficiency. These types of imbalances and undesirable harmonic distortions cannot be controlled by using the conventional indirect torque control (ITC) and direct torque control (DTC) strategies. For some high-performance motion control, such as precision machine tools, robotics, and servo drives, low torque ripples are, however, obligatory. Nowadays, more studies have been conducte

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27

Fuengwarodsakul, Nisai. "Predictive PWM-based direct instantaneous torque control for switched reluctance machines /." Aachen : Shaker, 2007. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016167111&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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28

Dever, Timothy P. "Direct Torque Control of Resonant Inverter Driven Permanent Magnet Synchronous Motor." Case Western Reserve University School of Graduate Studies / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1586426523199448.

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29

Purcell, Anthony. "New switching techniques for direct torque controlled induction motor drives." Thesis, University of Newcastle Upon Tyne, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285275.

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30

Zhao, Jibo. "An Efficient Wide-Speed Direct Torque Control Based on Fuzzy Logic Technique." University of Toledo / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1352922315.

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31

Ren, Yuan. "Direct torque control of dual three-phase permanent magnet synchronous machine drives." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/12190/.

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32

Abdellatif, Meriem. "Continuité de service des entraînements électriques pour une machine à induction alimentée par le stator et le rotor en présence de défauts capteurs." Thesis, Toulouse, INPT, 2010. http://www.theses.fr/2010INPT0107/document.

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Le développement de commandes en boucle fermée pour des entraînements électriques nécessite l'installation de capteurs pour avoir l'information de la rétroaction. Cependant, un éventuel défaut survenant sur l'un des capteurs installés (de courant, de vitesse/position,…) implique un disfonctionnement de la commande conduisant dans la plupart du temps à la mise hors service du système. Ces conséquences sont contraires aux exigences des industriels qui demandent des degrés de fiabilité du système de plus en plus élevés. Des statistiques montrent que le défaut capteur est fréquent. Il est donc imp

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33

Ramubhai, Patel Chintanbhai. "Investigations On Sensorless Vector Control Using Current Error Space Phasor And Direct Torque Control Of Induction Motor Drive Based On Hexagonal And 12-Sided Polygonal Voltage Space Vectors." Thesis, 2011. https://etd.iisc.ac.in/handle/2005/2180.

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Variable-speed Induction motor drives are nowadays used for various kinds of industrial processes, transportation systems, wind turbines and household appliances in the world. The majority of drives are for general purpose speed control applications where accurate speed control is not required for entire speed range. But for high dynamic drive application, very precise and fast control of induction motor drive is essential. For such applications, sophisticated and well-performing control design is a key issue. Precise and accurate torque control of the Induction Motor (IM) can only be accompli

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Ramubhai, Patel Chintanbhai. "Investigations On Sensorless Vector Control Using Current Error Space Phasor And Direct Torque Control Of Induction Motor Drive Based On Hexagonal And 12-Sided Polygonal Voltage Space Vectors." Thesis, 2011. http://etd.iisc.ernet.in/handle/2005/2180.

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Variable-speed Induction motor drives are nowadays used for various kinds of industrial processes, transportation systems, wind turbines and household appliances in the world. The majority of drives are for general purpose speed control applications where accurate speed control is not required for entire speed range. But for high dynamic drive application, very precise and fast control of induction motor drive is essential. For such applications, sophisticated and well-performing control design is a key issue. Precise and accurate torque control of the Induction Motor (IM) can only be accompli

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35

Silva, Jorge Miguel Gomes da. "Implementação do conversor de eletrónica de potência para um sistema de tração baseado no controlo DTC de um motor AFPMSM para aplicação de mobilidade elétrica." Master's thesis, 2017. http://hdl.handle.net/1822/56572.

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Dissertação de mestrado em Engenharia Eletrónica Industrial e de Computadores<br>A indústria e a comunidade científica têm vindo a estudar variantes das técnicas de controlo vetorial de motores elétricos, de forma a terem respostas satisfatórias a nível do desempenho global do sistema. Esta dissertação de Mestrado pretende expor de forma elucidativa a implementação da técnica de controlo direto do binário (DTC - Direct Torque Control), para aplicação em veículos elétricos (EV), como técnica alternativa ao controlo por orientação de campo (FOC - Field Oriented Control). Neste trabalho foi rea

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36

Carvalho, Jorge Daniel Vieira de. "Desenvolvimento de um Controlador com DSP para um Motor CA de 30 kW para o CEPIUM." Master's thesis, 2013. http://hdl.handle.net/1822/39683.

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Dissertação de mestrado integrado em Engenharia Eletrónica Industrial e Computadores<br>Atualmente existe uma crescente consciencialização para a necessidade de se utilizar fontes de energia renováveis como forma de substituição das fontes de energia não renováveis. Desta forma, os Veículos Elétricos (VE) têm vindo a aumentar a sua posição no mercado automóvel, uma vez que os seus motores são menos poluentes e possuem um rendimento muito superior. O objetivo desta Dissertação de Mestrado foi o de desenvolver um Controlador, constituído por um sistema de controlo e por um sistema de acion

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37

Πατσιάς, Ευστάθιος. "Μελέτη και κατασκευή ηλεκτροκινητήριου συστήματος υβριδικού οχήματος : σχεδιασμός και κατασκευή ηλεκτρονικού κυκλώματος ελέγχου της υβριδικής κατάστασης". Thesis, 2009. http://nemertes.lis.upatras.gr/jspui/handle/10889/2598.

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Η θεματολογία της εργασίας αυτής περιλαμβάνει την υβριδική τεχνολογία στην αυτοκίνηση. Γίνεται μία εκτεταμένη ανάλυση των υβριδικών οχημάτων, αρχικά κάνοντας αναφορά στην ιστορία των υβριδικών και μη οχημάτων και έπειτα στα περιβαλλοντικά θεμάτα που τα έφεραν στο προσκήνιο. Η ανάλυση περιλαμβάνει επίσης την μελέτη των διαφόρων κατηγοριών υβριδικών οχημάτων, την εξέταση των κατασκευαστικών μερών τους και κλείνει με την παρουσίαση κάποιων χαρακτηριστικών οχημάτων που βγήκαν στην παραγωγή. Στη συνέχεια, η εργασία περνά στο πειραματικό της στάδιο, που περιλαμβάνει τη μελέτη και κατασκευή ενός ηλ

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Yun-ChungWeng and 翁允中. "Low Torque Ripple Direct Torque Control for IPM Motor." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/m4fpaq.

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史宗岳. "Implementation of Direct Torque Control Inverter." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/02277787858573295118.

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碩士<br>國立臺北科技大學<br>機電整合研究所<br>86<br>The objective of this project is to develop a sensorless controller for AC induction motor drives based upon the direct torque control technique. First, auto parameter measuring technique is used to measure parameter of AC motor, then Several inverter control technique, including space vector modulation, random space vector modulation, as well as conventional techique using switching table, are investigated and inverter followed by exploring the control structure of AC drives, subjected to these inverter control techniques. 　　The application of the inverter c

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40

Yang, Wei-Chang, and 楊偉昌. "Design of the Direct Torque Control IC." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/90637893026079273341.

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碩士<br>國立臺北科技大學<br>機電整合研究所<br>92<br>The main research of the thesis is based on Cell-based digital IC design flow. We use the way to design and make the motor control ic, the ic is Direct Torque Control ASIC. The method of DTC is analysis the mathematic model of induction motor on stator coordinate axis. We use the input voltage and current to control the torque and flux. It’s foundation on Space Vector Modulation. Therefore the DTC ASIC can control the signal by stator torque and stator flux then to bring the on and off signal. After the inverter we can con

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Wang, Deng-Mao, and 王登茂. "Torque Ripple Reduction Design for Direct Torque Control of Induction Motor." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/11893407918422494189.

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碩士<br>國立中央大學<br>電機工程研究所<br>97<br>This research investigated the phenomenon of over-large ripple generated by direct torque control operated induction motors, and developed a fixed flux variation direct torque control to sufficiently inhibit the ripple. Direct torque control is uncomplicated, easy to practice, and not affected much by factor variations. However, a huge problem of direct torque control is that switching limited voltage vector results in a torque change, and this change causes noise and vibration of the motor. This problem is usually solved by spatial voltage vector adjusting con

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Ασημακόπουλος, Παναγιώτης. "Μελέτη και κατασκευή κινητήριου συστήματος υβριδικού οχήματος : ενεργειακή διαχείριση μέσω ηλεκτρονικών μετατροπέων ισχύος". Thesis, 2009. http://nemertes.lis.upatras.gr/jspui/handle/10889/2576.

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Η μόλυνση του περιβάλλοντος από τα μέσα μεταφοράς και η συνεχής μείωση των αποθεμάτων των ορυκτών καυσίμων αποτελούν τους δύο κύριους λόγους για τη στροφή των τμημάτων έρευνας της παγκόσμιας αυτοκινητοβιομηχανίας στην επινόηση οικολογικότερων μέσων μετακίνησης. Από αυτή την προσπάθεια προέκυψαν τα ηλεκτρικά υβριδικά οχήματα, τα οποία περιορίζουν την κατανάλωση καυσίμου και τις εκπομπες ρύπων συγκριτικά με συμβατικά οχήματα παραπλήσιων τεχνικών χαρακτηριστικών. Τα υβριδικά οχήματα είναι, ουσιαστικά, ο προάγγελος και το πεδίο δοκιμής και εξέλιξης της αμιγούς ηλεκτροκίνησης. Ο κοινός στόχος τη

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Μπούμης, Θεόδωρος. "Μελέτη και κατασκευή κινητήριου συστήματος υβριδικού οχήματος : σχεδιασμός και κατασκευή ηλεκτρονικού μετατροπέα ισχύος". Thesis, 2009. http://nemertes.lis.upatras.gr/jspui/handle/10889/2577.

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Η παρούσα διπλωματική εργασία πραγματεύεται τη μετατροπή ενός συμβατικού αυτοκινήτου σε υβριδικό ηλεκτρικό όχημα. Προς αυτή την κατεύθυνση, μελετάται και κατασκευάζεται το ηλεκτροκινητήριο σύστημα του οχήματος, το οποίο έχει τοπολογία παράλληλης διάταξης. Τα υποσυστήματα που το συνθέτουν είναι ένας τριφασικός ασύγχρονος ηλεκτρικός κινητήρας, μία συστοιχία ηλεκτροχημικών συσσωρευτών και οι απαραίτητοι ηλεκτρονικοί μετατροπείς ισχύος. Το υβριδικό όχημα διαθέτει τη δυνατότητα επιστροφής ενέργειας κατά την επιβράδυνση, φορτίζοντας τους ηλεκτροχημικούς συσσωρευτές (αναγεννητική πέδηση).

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Pal, Ketu. "Improved Direct Torque Control of Induction Motor Drives to Reduce Torque Ripple." Thesis, 2018. http://ethesis.nitrkl.ac.in/9740/1/2018_MT_216EE4306_KPal_Improved.pdf.

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The Direct Torque Control (DTC) is an advanced scalar control technique, which is used to obtain high performance torque control. This dissertation work is aimed to give a detailed comparison between two scheme of the DTC i.e. conventional DTC and SVM-DTC. The study is done by simulation using MATLAB/Simulink power system block set that allows a complete representation of the power section (inverter and induction motor) and the control system. In this thesis, the performance of the two DTC scheme is evaluated in terms of torque and current ripple, and transient response to step variations o

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"Improvements in direct torque control of induction motors." Universitat Politècnica de Catalunya, 2001. http://www.tesisenxarxa.net/TDX-0724101-144636/.

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Brassfield, William R. "Direct torque control for brushless doubly-fed machines." Thesis, 1993. http://hdl.handle.net/1957/36482.

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The Brushless Doubly-Fed Machine (BDFM) has recently become an important research topic in the field of variable-speed AC drives. In recent studies, the BDFM has shown significant potential for improving the reliability and performance of AC drive systems, as well as reducing total system cost. While the BDFM offers several advantages over existing AC drives in steady-state operation, it suffers from dynamic instabilities and slow response times, and a feedback control system is necessary. The mathematics of the BDFM are much more complicated than those of a singly-fed machine, and thus tradit

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Pan, Yi-Cheng, and 潘奕丞. "Hybrid Direct Torque Control for Induction Motor Drives." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/61568632171644115675.

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碩士<br>清雲科技大學<br>電機工程研究所<br>94<br>Induction motors have been widely used in industry applications. According to its mechanical structure identities, the induction motor has a lot of advantages such as stable structure, low price, simplicity of maintenance and so on. Recently, direct torque control technique has been well developed. Differently from the field-oriented control (FOC), DTC does not tend to reproduce the electromechanical behavior of a dc motor drive but is aimed at a complete exploitation of the flux and torque-producing capabilities of an induction motor (IM) fed by a pulse width

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Chang, Wen-Sheng, and 張文勝. "Direct Torque Control of Permanent Magnet Synchronous Motor." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/29202449038718233363.

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碩士<br>國立臺北科技大學<br>機電整合研究所<br>88<br>It is well known that the features of DTC include not requiring complex coordinate transform and decoupling calculations, and with fast torque response. The objective of this thesis is to implement a Permanent Magnet Synchronous Motor (PMSM) based upon Direct Torque Control. The implemented DTC-based PMSM motor drives generates the flux and torque errors, and thereby selecting the switching states via switching table for inverter control. The speed control loop consists of a proportional-integral (PI) controller. The details for the controller desi

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Chu, Bor-Sen, and 褚柏森. "Application of Induction Motor to Direct Torque Control." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/01311922385082708578.

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碩士<br>國立交通大學<br>電機與控制工程系<br>89<br>Direct Torque Control is to use torque and flux magnitude as input commands in the controller, which calculates the voltage vectors for the motor.In this thesis, we deal with the problem of using sliding mode technique to control and observe the states of an induction motor. We hope to directly regulate the rotor torque and the square of the rotor flux magnitude to the desired value. Nonlinear sliding surfaces are chosen and stator voltages are derived such that the state trajectories have a sliding mode behavior for the driving system to achieve the control o

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Panda, Anwesha. "Direct Torque Control of Permanent Magnet Synchronous Motor." Thesis, 2014. http://ethesis.nitrkl.ac.in/6175/1/110EE0215-1.pdf.

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Permanent Magnet Synchronous Motors (PMSM’s) are used in places that require fast torque response and high-performance operation of the machine. The Direct Torque Control (DTC) technique is different from methods which use current controllers in an proper reference frame to control the motor torque and fluxe values. The DTC technique does not any current controllers. DTC controls the Voltage source Inverter states on the basis of difference between the required and obtained torque and flux values. This is done by selecting one out of the six voltage vectors obtained by the Inverter (VSI) to ha

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