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Dissertations / Theses on the topic 'DC DRIVE SYSTEM'

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Published: 3 June 2025

Last updated: 31 July 2025

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1

Shokrollahi-Moghani, Javad. "Analysis, design and dynamic performance of a planar brushless DC drive system." Thesis, University of Bath, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337821.

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2

Akmese, Recep. "Design, operation and dynamic performance of a brushless DC tubular drive system." Thesis, University of Bath, 1989. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328876.

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3

Gule, Nkosinathi. "Analysis and evaluation of brush-DC equivalent controlled multiphase cage induction machine drive." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6489.

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Thesis (PhD (Electrical and Electronic Engineering))--University of Stellenbosch, 2011.<br>ENGLISH ABSTRACT: The multiphase induction machine drive has been under investigation for the last half century. Although it offers several attractive advantages over the conventional three-phase induction machine drive, it is restricted to highly specialised applications. One aspect of the multiphase induction machine drive is the complexity of the control algorithm for decoupled flux and torque control. The complexity, arising from the required coordinate transformations, increases with increase in

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4

Xu, Ye. "Kilowatt Three-phase Rotary Transformer Design for Permanent Magnet DC Motor with On-rotor Drive System." Thesis, Mittuniversitetet, Avdelningen för elektronikkonstruktion, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-27781.

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The aim of this thesis is to design a kilowatt three-phase step-down rotary transformer for a permanent magnet DC motor. The permanent magnet DC motor has an on-rotor drive system, and therefore requiring a power supply that can transfer power to its drive unit without mechanical contact. The rotary transformer has a detached magnetic coupling structure that qualifies it as a potential method for the wireless power transfer. This thesis studies the rotary transformer as a static device, focusing on its core loss. By using a transient finite element analysis of COMSOL Multiphysics and an iron l

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5

Keshri, Ritesh Kumar. "Electric Vehicle Propulsion System." Doctoral thesis, Università degli studi di Padova, 2014. http://hdl.handle.net/11577/3423806.

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Electric vehicles are being considered as one of the pillar of eco-friendly solutions to overcome the problem of global pollution and radiations due to greenhouse gases. Present thesis work reports the improvement in overall performance of the propulsion system of an electric vehicle by improving autonomy and torque-speed characteristic. Electric vehicle propulsion system consists of supply and traction system, and are coordinated by the monitoring & control system. Case of light electric vehicle propulsion system with permanent-magnet (PM) brushless dc (BLDC) drive being used in electric scoo

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6

Macías, Cubeiro Rosa. "Development and Implementation of a Search and Locate Actuator System." Thesis, KTH, Elektrisk energiomvandling, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-109706.

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Over the last years, electrical roads have emerged as a cost effective and environmentally friendly solution towards a transportation system with less dependency on fossil fuels. This thesis presents the design of a search and locate system for road-bound conductive electrical roads with position control in two axes. The system is intended to find and follow the position of an electrified rail. The actuator system constitutes a firm groundwork for further research and development in this field. A laboratory test set up has been designed and both hardware and software parts have been constructe

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7

Zare, Abbas. "Implementation of Embedded Control System for Electric Drives based on Automatic Code Generation." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

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This project focuses on an improved methodology for embedded software development. MATLAB and Simulink allow the user to simplify control algorithm development for specific applications and load the implemented algorithms into the embedded target. MATLAB allows constructing the control algorithms and its interface to different Digital Signal Processor (DSP) modules, such as A/D or D/A conversions and ePWM, as a block scheme in Simulink library. For example, Texas Instrument (TI) Company in collaboration with MATLAB allows the user to create a link between different DSPs of the TI and MATLAB

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8

Ghasemi, Negareh. "Improving ultrasound excitation systems using a flexible power supply with adjustable voltage and frequency to drive piezoelectric transducers." Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/61091/1/Negareh_Ghasemi_Thesis.pdf.

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The ability of a piezoelectric transducer in energy conversion is rapidly expanding in several applications. Some of the industrial applications for which a high power ultrasound transducer can be used are surface cleaning, water treatment, plastic welding and food sterilization. Also, a high power ultrasound transducer plays a great role in biomedical applications such as diagnostic and therapeutic applications. An ultrasound transducer is usually applied to convert electrical energy to mechanical energy and vice versa. In some high power ultrasound system, ultrasound transducers are applied

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9

Dridi, Hocine. "Microprocessor control of a DC variable speed drive." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319962.

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10

Leedy, Aleck Wayne Nelms R. M. "Analysis of DC power systems containing induction motor-drive loads." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Spring/doctoral/LEEDY_ALECK_32.pdf.

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11

Sterk, Douglas Richard. "Compact Isolated High Frequency DC/DC Converters Using Self-Driven Synchronous Rectification." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/9648.

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In the early 1990's, with the boom of the Internet and the advancements in telecommunications, the demand for high-speed communications systems has reached every corner of the world in forms such as, phone exchanges, the internet servers, routers, and all other types of telecommunication systems. These communication systems demand more data computing, storage, and retrieval capabilities at higher speeds, these demands place a great strain on the power system. To lessen this strain, the existing power architecture must be optimized. With the arrival of the age of high speed and power hungry mi

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12

Rezaei-Lori, Ahmad Ali. "Design and simulation of brushless DC drive systems for industrial applications." Thesis, Cardiff University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336117.

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13

Lee, Shiyoung. "Effects of Input Power Factor Correction on Variable Speed Drive Systems." Diss., Virginia Tech, 1999. http://hdl.handle.net/10919/26493.

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The use of variable speed drive (VSD) systems in the appliance industry is growing due to emerging high volume of fractional horsepower VSD applications. Almost all of the appliance VSDs have no input power factor correction (PFC) circuits. This results in harmonic pollution of the utility supply which could be avoided. The impact of the PFC circuit in the overall drive system efficiency, harmonic content, magnitude of the system input current and input power factor is particularly addressed in this dissertation along with the development of analytical methods applicable to the steady-state an

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14

Haeberlin, Marc W. "Adaptive Automotive Lighting Systems." DigitalCommons@CalPoly, 2015. https://digitalcommons.calpoly.edu/theses/1480.

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Over the past few years, the use of LEDs within the automotive and avionic industries has increased due to their high efficiency, durability and wide range of light brightness. As the use of LEDs within these industries grows, a need for reliable, high performance drivers becomes more relevant. Companies are implementing LEDs for applications involving adaptive lighting or simple dimming features. This thesis shows implementation of various non-isolated analog converters integrated with digital dimmers to achieve these adaptive lighting systems. Adaptive lighting systems involve reading an inp

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15

Kourtellis, Achilleas. "Operational evaluation of advanced safety enhancement devices : rearview video system." [Tampa, Fla] : University of South Florida, 2009. http://purl.fcla.edu/usf/dc/et/SFE0003252.

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16

Rostaing, Gilles. "Diagnostic de défaut dans les entrainements électriques." Grenoble INPG, 1997. http://www.theses.fr/1997INPG0029.

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Cette thèse représente une contribution aux études sur la disponiblité des dispositifs électrotechnique. L'étude présentée vise à définir la méthode de redondance analytique, basée sur l'estimation d'état, la mieux adaptée au diagnostic des entraînements électriques en considérant les défauts de l'ensemble du convertisseur, de la commande et des capteurs. La méthode retenue doit permettre d'obtenir un modèle de diagnostic implantable en temps réel et sans ajout de capteurs supplémentaires. L'application retenue est un entraînement à courant continu commandé en couple. Le chapitre II compare de

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17

Samaranayake, Lilantha. "Distributed control of electric drives via Ehernet." Licentiate thesis, KTH, Electrical Systems, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1656.

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<p>This report presents the work carried out aiming towardsdistributed control of electric drives through a networkcommunication medium with temporal constraints, i.e, Ethernet.A general analysis on time delayed systems is carried out,using state space representation of systems in the discretetime domain. The effect of input time delays is identified andis used in the preceding controller designs. The main hardwareapplication focused in this study is a Brushless DC servomotor, whose speed control loop is closed via a 10 MbpsSwitched Ethernet network. The speed control loop, which isapproximate

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18

Noon, John Patrick. "Development of a Power Hardware-in-the-Loop Test Bench for Electric Machine and Drive Emulation." Thesis, Virginia Tech, 2020. http://hdl.handle.net/10919/101498.

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This work demonstrates the capability of a power electronic based power hardware-inthe- loop (PHIL) platform to emulate electric machines for the purpose of a motor drive testbench with a particular focus on induction machine emulation. PHIL presents advantages over full-hardware testing of motor drives as the PHIL platform can save space and cost that comes from the physical construction of multiple electric machine test configurations. This thesis presents real-time models that were developed for the purpose of PHIL emulation. Additionally, real-time modeling considerations are presented as

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19

Awan, Ahmed-Bilal. "Contribution à l’étude de la stabilité des systèmes électriques distributés autour d’un bus commun d'alimentation." Thesis, Vandoeuvre-les-Nancy, INPL, 2011. http://www.theses.fr/2011INPL099N/document.

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La stabilité est un facteur très important dans tous les modes de fonctionnement pour un Système à Puissance Distribué (SPD). En SPD, les charges sont connectées au bus DC à travers d’un filtre entré LC. La plupart des charges de SPD d'avions présents une caractéristique de charge à puissance constante dans un domaine de fonctionnement dans laquelle ils sont étroitement contrôlés. Ainsi, elles peuvent être modélisées comme une résistance négative. Changement de la charge dans un sous-système peut conduire un système stable dans l'instabilité.Une solution pratique pour diminuer le risque d'inst

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20

Takasan, Kazuaki. "Nonequilibrium phenomena and dynamical controls in strongly correlated quantum systems driven by AC and DC electric fields." Kyoto University, 2019. http://hdl.handle.net/2433/242586.

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21

Ay, Gokce Mehmet. "&quot." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605283/index.pdf.

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This thesis focuses on the design of an electrical drive system for the purpose of high precision motion control. A modern electrical drive is usually equipped with a current regulated voltage source along with powerful motion controller system utilizing one or more micro-controllers and/or digital signal processors (DSPs). That is, the motor drive control is mostly performed by a dedicated digital-motion controller system. Such a motor drive mostly interfaces with its host processor via various serial communication protocols such as Profibus, CAN+, RS-485 etc. for the purpose of receiving com

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22

Awadallah, Mohamed Abdel-Azim Mohamed. "Automatic fault diagnosis and location in CSI-fed brushless DC motor drives using Neuro-Fuzzy Systems /." Search for this dissertation online, 2004. http://wwwlib.umi.com/cr/ksu/main.

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23

Peters, Richard David. "Vertical transportation planning in buildings." Thesis, Brunel University, 1998. http://bura.brunel.ac.uk/handle/2438/5407.

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This thesis is submitted for the degree of Doctor of Engineering in Environmental Technology. The degree is awarded for industrially relevant research, based in industry, and supported by a programme of development courses. This project aims to contribute to a reduction in the environmental burdens of vertical transportation systems. The author has carried out an environmental assessment showing that the dominating environmental burdens of vertical transportation systems arise from their use of electricity while in operation in buildings. An assessment of traffic demand has concluded that we a

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24

Awan, Ahmed-Bilal. "Contribution à l’étude de la stabilité des systèmes électriques distributés autour d’un bus commun d'alimentation." Electronic Thesis or Diss., Vandoeuvre-les-Nancy, INPL, 2011. http://www.theses.fr/2011INPL099N.

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La stabilité est un facteur très important dans tous les modes de fonctionnement pour un Système à Puissance Distribué (SPD). En SPD, les charges sont connectées au bus DC à travers d’un filtre entré LC. La plupart des charges de SPD d'avions présents une caractéristique de charge à puissance constante dans un domaine de fonctionnement dans laquelle ils sont étroitement contrôlés. Ainsi, elles peuvent être modélisées comme une résistance négative. Changement de la charge dans un sous-système peut conduire un système stable dans l'instabilité.Une solution pratique pour diminuer le risque d'inst

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25

Green, Clayton R. "MODELING AND TEST OF THE EFFICIENCY OF ELECTRONIC SPEED CONTROLLERS FOR BRUSHLESS DC MOTORS." DigitalCommons@CalPoly, 2015. https://digitalcommons.calpoly.edu/theses/1459.

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Small electric uninhabited aerial vehicles (UAV) represent a rapidly expanding market requiring optimization in both efficiency and weight; efficiency is critical during cruise or loiter where the vehicle operates at part power for up to 99% of the mission time. Of the four components (battery, motor, propeller, and electronic speed controller (ESC)) of the electric propulsion system used in small UAVs, the ESC has no accepted performance model and almost no published performance data. To collect performance data, instrumentation was developed to measure electrical power in and out of the ESC

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26

Ram, Prakash Ranjithh Raj. "Study of an Isolated and a Non-Isolated Modular DC/DC Converter : In Multi-Terminal HVDC/MVDC grid systems." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-278495.

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För sammankoppling av multi-terminala HVDC-system med punkt-till-punkt kopplingar ärDC-DC-omvandlaren den enda möjliga sammankopplingen. Därför genomgår problemenmed spänningsmatchning och likspänningsströmbegränsning i högspännings DC-systemomfattande forskning samt ligger i fokus för denna avhandling. Först analyseras toppmodernatopologier för högspännings DC-DC-omvandlare som används för samtrafik av flera terminalaHVDC-system. De analyserade topologierna jämförs sedan baserat på dess olika funktioner.Topologin för en konventionell icke-isolerad DC-DC-omvandlare analyseras när det gäller de

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27

Rostaing, Gilles. "DIAGNOSTIC DE DÉFAUT DANS LES ENTRAINEMENTS ÉLECTRIQUES." Phd thesis, Grenoble INPG, 1997. http://tel.archives-ouvertes.fr/tel-00909645.

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Cette thèse représente une contribution aux études sur la disponiblité des dispositifs électrotechnique. L'étude présentée vise à définir la méthode de redondance analytique, basée sur l'estimation d'état, la mieux adaptée au diagnostic des entraînements électriques en considérant les défauts de l'ensemble du convertisseur, de la commande et des capteurs. La méthode retenue doit permettre d'obtenir un modèle de diagnostic implantable en temps réel et sans ajout de capteurs supplémentaires. L'application retenue est un entraînement à courant continu commandé en couple. Le chapitre II compare de

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28

Shearrow, Anne M. "Ionic liquid-mediated sol-gel sorbents for capillary microextraction and challenges in glass microfabrication." [Tampa, Fla] : University of South Florida, 2009. http://purl.fcla.edu/usf/dc/et/SFE0002988.

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29

Dong, Rong [Verfasser], Uwe [Akademischer Betreuer] Schäfer, Uwe [Gutachter] Schäfer, Sibylle [Gutachter] Dieckerhoff, Sami [Gutachter] Hlioui, and Julia [Gutachter] Kowal. "Design and comparison of two brushless DC drives for an electric propulsion system of solar-power unmanned aerial vehicles / Rong Dong ; Gutachter: Uwe Schäfer, Sibylle Dieckerhoff, Sami Hlioui, Julia Kowal ; Betreuer: Uwe Schäfer." Berlin : Universitätsverlag der TU Berlin, 2020. http://d-nb.info/1216945020/34.

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30

Chen, Kuan-Jen, and 陳冠仁. "DSP-Based Brushless DC Motor Drive System." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/78697636326061479131.

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碩士<br>國立中央大學<br>機械工程研究所<br>95<br>The thesis discusses the driving system of Brushless DC Motor (BDCM), and the current control was achieved by means of hysteresis control. Hysteresis current control gives fast response and good accuracy. It can be implemented with a simple hardware. The speed control of BDCM was achieved with a PI controller. A brief introduction of the difference between the brush DC motor and the Brushless AC Motor in the first, then the characteristics and mathematical model of the BDCM are introduced. The principle of commutation is also presented. The main advantages of

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wu, chih-nan, and 巫志男. "Digital Frequency-Locked Brushless DC Motor Drive System." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/06461036528234982148.

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碩士<br>國立彰化師範大學<br>電機工程學系<br>95<br>In this paper, a digital frequency-locked pulse width mod¬ulator (DFL-PWM) is proposed to implement a digital frequency-locked DC brushless motor drive system. Hall sensors are used to detect the rotor position and estimate the motor speed. These sensed signals are sent to the frequency pump controller to obtain a suitable pulse wide modulated signal to implement the electronic commutation and the motor speed control. In order to verify the feasi¬bility of the proposed DFL-PWM, a prototype for driving a 1/2 HP motor is design and implemented. The experimental

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ZHANG, GU-JIN, and 張家進. "DC Brushless Motor Drive System for Stringing Machine." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/30289324867428725029.

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碩士<br>大葉大學<br>機械與自動化工程學系<br>101<br>This research develops a digital embedded DC brushless motor drive system for stringing machine. Based on Microchip dsPIC30F2010 microprocessor, the software is designed to integrate an interface circuit, a force measurement circuit and a motor driver. A robust force control law is derived to overcome the disturbance resulted from the stiffness variation of the different strings. The proposed control scheme obtains a precision force accuracy for the various stringing processes, and also solve the motor current oscillation problem. A three-phase MOSFET bridge

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Tsai, Tsung-Cheng, and 蔡宗成. "Sensorless PWM-Controlled Drive System for Brushless DC Motor." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/64539989993598402897.

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碩士<br>國立彰化師範大學<br>電機工程學系<br>96<br>In this thesis, a sensorless PWM-controlled drive system for brushless DC motor is implemented. First, the stepped start-step method is used to generate the magnetic flux of the stator to start the brushless DC motor. After the rotation speed of the brushless DC motor reaches running, the back electromotive force can be captured to estimate the rotor position. The back electromotive force signal is sent to the Microprocessors to determine suitable PWM duty cycles to control rotation speed of the brushless DC motor and stabilize output speed. Finally, prototype

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Lu, Wei-i., and 呂威逸. "Drive System of Electrical Lighter Vehicle withBrushless DC Machine." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/51205165310933644480.

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碩士<br>國立中山大學<br>電機工程學系研究所<br>98<br>A drive system of the electrical lighter vehicle with the brushless DC machine is developed in the thesis. The system consists of a control unit based on a digital signal processor (DSP) and a drive module which combines a drive circuit, a brushless DC machine, and associated wheels. The motive power is delivered directly to the wheels without a power transmission system. The driving comments and the monitored signals between the modules and the control unit are communicated by the Controller Area Network (CAN) Bus. Each module can be controlled independently

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Chen, Da-shien, and 陳達賢. "Development of a Direct-Drive System for Brushless DC Motors." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/10705899826333836239.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>93<br>This thesis is concerned with the design and implementation of a direct-drive system for brushless dc motors. On the grid side, a current-controlled single-phase power converter is designed to improve current harmonics and power factor, while on motor side, Hall-effect sensors are used to detect the position of rotor to estimate speed. In addition, the speed and current of motor are fed back to control speed and torque, respectively. In order to control the brushless dc motor in high speed, the phase-advancement control of six-step square waves is proposed to e

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CHEN, JIAN-CIN, and 陳建秦. "DSP Microcontroller Based Control of Brushless DC Motor Drive System." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/s4x76g.

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碩士<br>大葉大學<br>機械與自動化工程學系<br>105<br>This thesis developed the drive system of BLDC motor based on PICDEM MC LV development board with Microchip dsPIC30F3010 microprocessor. The embedded microprocessor has many built-in functional modules, including PWM, compare, timer, etc. The 3-phase MOSFET bridge was used as the motor drive circuit and 3-phase hall sensing circuit was used to detect the electrical angle of motor shaft. The PWM signal was used to control motor speed to achieve the DC brushless motor drive system. The PI control combined with the feedforward control was applied to the motor c

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Moghe, Prajakta S. "Zigbee based wireless adjustable speed drive system." Thesis, 2016. http://hdl.handle.net/1805/10857.

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Indiana University-Purdue University Indianapolis (IUPUI)<br>This thesis proposes a remotely controlled motor drive system which is able to supply a regulated voltage for both DC and AC motors. The proposed system integrates two different technologies, each of which belongs to the field of wireless communications and semiconductor power electronics. The introduction highlights the literature review and technical contributions in these two electrical engineering fields. The pulse width modulated control algorithm for speed control is discussed in detail. Incorporating the zigbee wireless techno

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Chang, Hu-Chi, and 張護繼. "Design and Implementation of Sensorless DC Inverter-fed Compressor Drive System." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/32384929641759977773.

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碩士<br>國立中央大學<br>電機工程研究所<br>98<br>The objective of this thesis is to develop two kinds of sensorless DC inverter-fed compressor control scheme. One is the high frequency signal injection method combined with the commutation-signal-based speed estimate method, and the other is the high frequency signal injection method combined with the model reference adaptive control method. Both kinds of control structure use high frequency signal injection method for the start strategy to achieve sinusoidal starting. When the motor speed gradually increases to the preset speed, the driver will switch to the

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Lin, Kun Min, and 林琨閔. "Design and Implementation of High Power Brushless DC Motor Drive System." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/10744859517639942349.

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碩士<br>長庚大學<br>電機工程學研究所<br>96<br>The thesis designs and implements a 22 kW class brushless DC (BLDC) motor drive system test bed for hybrid electric vehicle (HEV) applications. First, the driving scheme of the BLDC motor is introduced. Then, a 22 kW BLDC motor test bed is built. Two Types of speed controller,analog controller based on operational amplifies and digital controller based on TMS320F2812, are designed and implemented for the BLDC. Finally, experimental results verify the functions of the 22 kW BLDC motor driving system test bed.

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FAN, JIM-YUAN, and 范晉源. "Design of Drive System for Ceiling Fan with Brushless DC Motor." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/8wjj9c.

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碩士<br>國立虎尾科技大學<br>飛機工程系航空與電子科技碩士班<br>106<br>The purpose of this paper is to design a brushless motor for the drive control of a ceiling fan. The overall system includes two parts. One is design of the power supply. The other is research of the motor drive control. The power supply part is based on the flyback-converter as the main structure, becausethe flyback converter is more efficient than the traditional linear regulator and easy to achieve multiple sets of output function design. The developed flyback converter is a UC3842 analog chip using peak current mode as the control core. Exploit

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Li, Ming-Shian, and 李明憲. "Design of Drive System for Ceiling Fan with Brushless DC Motor." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/yz6p56.

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碩士<br>國立虎尾科技大學<br>飛機工程系航空與電子科技碩士班<br>104<br>The purpose of the thesis, contain the AC-DC converter and the driver of the blushless motor, is to develop a driver system of brushless dc motor for ceiling fan. 　　The AC-DC converter by the flyback topology is used more widely with the ceiling fan driven by the blushless motor. The flyback converter is more efficient than the voltage regulator. The flyback converter employs a UC3842 controller to achieve the peak current mode control. Feedback controller analysis and design for the flyback converter. 　　The fan controller use digital hall sensor t

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Li, Yi Sian, and 李宜憲. "A Novel Boost-type DC/AC Inverter for PMSM Drive System." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/888a74.

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碩士<br>國立虎尾科技大學<br>電機工程研究所<br>98<br>In this thesis, a novel boost-type DC/AC inverter for PMSM (Permanent Magnet Synchronous Motors) drive is proposed. By generalized zero vector control, the proposed inverter has higher output voltage and single-stage control. Besides, Using control mode, back EMF of PMSM can be detected to obtain the phase and magnitude of air-gap flux. Without complicated transformation, the maximum torque control can be achieved by back EMF of PMSM and the signals of encoder. Finally, the proposed some experimental results are compared with the proposed theory for verif

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Chen, Ming-hui, and 陳銘輝. "Implementation of Position control of a Linear Brushless DC Motor Drive System." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/356zbk.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>94<br>The purpose of this thesis is to build a position control system of a linear motor driver. The front stage employs a single-phase full-bridge boost type AC/DC converter, which provides the inverter stage with variable DC voltage. Then, a linear brushless DC motor is driven by the inverter to accomplish the motion control. The AC/DC converter conducts switching-mode operations, so that the low-distortion/high- power-factor line current is obtained. Moreover, this converter provides bidirectional capability when the dc link voltage needs to reduce or the motor de

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Lin, Feng-wen, and 林豐文. "Design and Implementation of Variable Loading Drive System for Brushless DC Motors." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/y263f9.

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碩士<br>崑山科技大學<br>機械工程研究所<br>96<br>This thesis is based on digital signal processor, DSPIC30F4011, as core control that researches on brushless DC motors’ load variance control. Conventional motor often does not have the best performance under various loading conditions and set the v/f speed by open-loop control will be affected by load variance easily. Therefore, control system comes up with a strategy by using closed-loop integral-proportional (IP) control, Bumpless transfer speed control, and complementary pulse width trade flow to modulate brushless DC motor in order to decrease system reac

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Chen, Po-Hsun, and 陳柏勳. "A Sensorless Drive System for Brushless DC Motors with Phase Advance Control." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/22404300193074302218.

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碩士<br>國立成功大學<br>系統及船舶機電工程學系碩博士班<br>95<br>Brushless DC motors (BLDCM) have been applied to many applications due to their advantages such as high power density, high efficiency and less maintenance. In order to process electrical commutations correctly, sensors are required to detect rotor pole positions. For example, Hall Effect sensors are a common-use device with advantages of low cost and high reliability. However, Hall Effect sensors may not be suitable for some conditions such as high temperature or small volume. Hence, the development of sensorless drive techniques has been a very import

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Ciou, Wei-Fong, and 邱韋峯. "Design of Drive System for Sensorless Brushless DC Motor Using Single-Chip PIC18F2431." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/53mbqj.

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碩士<br>崑山科技大學<br>電機工程研究所<br>96<br>This thesis proposes the use of a single-chip microprocessor (PIC18F2431) to design a drive system of sensorless brushless DC (BLDC) motor. The BLDC motor has the advantages of high torque and no carbon brush, and it also can be controlled like a DC motor. Therefore, the BLDC motor is gradually used to replace the inductor motor in industry. In general, the Hall sensor is used to detect the position of rotor pole in industrial circles. However, it must provide some spaces to install Hall sensor. In addition, the Hall sensor is sensitive to the operation environ

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Yin, Dao-hong, and 尹道泓. "Implementation of a Sensorless Drive System for Three-Phase Brushless DC Fan Motors." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/50552636196187248694.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>96<br>This thesis proposes an implementation of a sensorless drive system for three-phase brushless DC fan motors. First, the pulse width modulation control method and the voltage control method are used in the speed control for a three-phase brushless DC fan motor. Next, by using the phase-adjustment method and the 150 degree driving method, the adjustable speed range can be extended. The soft-start technique and soft-switching technique are applied to improve the current pulsations. After that, a rotor position estimator is proposed. By detecting the back emf, a ro

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Chen, Chien-Hua, and 陳建樺. "Design and Implementation of Brushless DC Motor Drive For Automotive HVAC Cooling System." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/r39fhb.

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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>97<br>The objective of this thesis is to design and implement Brushless DC Motor (BLDCM) drives for automotive Heating Ventilation and Air Conditioning (HVAC) system which is used for fan driving application of condenser in heavy duty trucks with No-Idle Thermal Environment (NITE) system. The BLDCM drives are with Hall position sensors and 180° six-step commutation method. The efficiency is up to 80%. The fan is driven by BLDCM drive via PWM control signal based on the requirement of HVAC cooling system. The designed BLDCM drives for HVAC system should meet th

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Chen, Po-Cheng, and 陳柏成. "Design of the Novel Drive System for Brushless DC Motor-Based Ceiling Fans." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/snvzdv.

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碩士<br>國立虎尾科技大學<br>航空與電子科技研究所<br>98<br>The topic of the thesis, contained the AC-DC converter and the driver of the blushless motor, is developed on the driver system of the new ceiling fan based on the blushless motor. The AC-DC converter base on the flyback structure is popular in the ceiling fan for the blushless motor, but the flyback converter has the drawback about the low power factor near 0.45. The new structure of converter modified the flyback structure is presented for improving the power factor. The converter not only provides the high power factor about 0.98, but also keeps the

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Yang, Zhi-Sheng, and 楊智勝. "Implementation of a PMSM Drive System Using Small Film DC-Link Capacitor Based Inverter." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/9f2mjj.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>106<br>The thesis investigates a small film DC-Link capacitor based inverter driving a permanent magnet synchronous motor. Two control methods, including a d-q current control method and a positive torque region control method, are proposed to realize the small film DC-link capacitor based inverter drive system. The input source power factor is effectively increased. In addition, the adjustable speed range is extended. Finally, a damping compensation control is used to reduce the input current harmonics. A predictive speed controller and a predictive current controll

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