Dissertation > Excellent graduate degree dissertation topics show

PCH asynchronous motor with L2 gain disturbance rejection control technology

Author: LiuJin
Tutor: YuHaiSheng
School: Qingdao University
Course: Control Theory and Control Engineering
Keywords: Hamiltonian System L2 Gain Asynchronous Motor Speed Control
CLC: TM343
Type: Master's thesis
Year: 2011
Downloads: 31
Quote: 0
Read: Download Dissertation

Abstract


Asynchronous Motors drives are the most common electromechanical energy-transformation systems in industry, due to its reliability, ruggedness, and low cost. With the development of electronics and control technology, Asynchronous Motors replace of continuous current motor gradually to be the key power equipment. Asynchronous Motors have the characteristics of multiple variables, uncertain parameters, and so on. Vector control and direct torque control are both raised based of its dynamic model which can achieve the well static and dynamic performance. But there are some disadvantages of these two methods, vector control is easily attached by rotor resistance, direct torque control usually produces torque pulse.Aiming to the nonlinear properties of Asynchronous Motors, some experts apply some nonlinear methods to the motor control such as fuzzy control, intelligent control, backstepping control, passivity-based control, and so on. Many theoretical extensions and practical applications have been reported in the literature. Recently, the principle based on Energy-Shaping (ES) and Port-Controlled Hamiltonian (PCH) has attracted some motor control experts’ attention. In this paper, speed controllers of Asynchronous Motor are designed based on the theory of ES and PCHD.Firstly, we introduce the present situation and development tendency of Asynchronous Motors drive systems at home and abroad.Secondly, some basic theories of ES and PCHD control principle are introduced. Theory of L2 gain is also introduced, L2 gain from the load torque disturbance to a penalty signal may be reduced to any given level if the penalty signal is defined properly.Thirdly, with the coordinate transformation theory, Asynchronous Motors models are constructed in the stationary and rotating reference frame respectively. Then the PCHD model of Asynchronous Motors is given in dq frame. When there are no disturbances, speed controller of Asynchronous Motors is designed based on the state error PCHD control principle; when motor parameters and load torque exit disturbances, we designed the controller based on theory of L2 gain. To improve the dynamic performance, we apply PI control to the motor control.Then, the space vector pulse-width modulation (SVPWM) is introduced and the whole Asynchronous Motors drive system model is realized. And simulation with each controller is studied in Matlab/Simulink condition. Simulation results show the control methods are effective. Then, we compare the PCHD control method with vector control method.At last, the research works in this paper are summarized, the problems in the passed research are proposed and the future research works are also presented.

Related Dissertations

  1. The Research of Fuzzy Adaptive Soft Start Control on AC Asynchronous Motor,TM343
  2. The PCH modeling and control of PWM rectifier,TM461
  3. Asynchronous Motor Direct Torque Control in the Application of Variable Frequency Control Pumping Unit,TM921.51
  4. Modeling & Simulation and Optimization Design on the Control System of Organic Fluid Double-cycle Cogeneration,TM617
  5. The Motor’s Parameter Identification Research to Vector Controlled Inverter Used in Asynchronous Motor,TM921.5
  6. Electric Vehicle AC Speed ??Control System Design,U463.6
  7. TBM cutterhead system synchronization driven research,TM921.48
  8. Hamiltonian System and Semi-analytical Method Approach to Bending Problem of Piezoelectric Cantilever Beam,O241.82
  9. Research on the Vector Control System of Asynchronous Motor Base on Three-level Inverter by DSP,TM343
  10. The Special Design and Research Based on FPGA of Frequency Conversion System for Running Machine,TM921.51
  11. Research on the New Type Brushless Wound-Rotor Asynchronous Motor,TM343
  12. Research on Speed-sensorless Vector Control System Based on MRAS for Asynchronous Motor,TM343
  13. Experimental Studies on the Three-winding Single-phase Motor for Agricultural Engineering,TM343
  14. Research of Motor’s Rotor Fault Diagnosis System Based on DSP,TM307
  15. The Drive Control of the Automatic Transmission Test-bed,TM343
  16. Research on Dual-PWM Converter and It’s Control Strategy,TM921.51
  17. Study of SVPWM Controller Based on Nios II,TM571
  18. Application of Electro-hydraulic Digital Control Technology in Lifting Equipment,TH21
  19. Research and Application of SVPWM Algorithm on Modern Cascade Speed Control System,TM921.5
  20. Polynomial parameter-dependent robust stability and interference suppression systems - linear matrix inequalities (LMI) approach,O231
  21. The Speed Sensor-less Vector Control System of the Asynchronous Motor Based on TMS320F2812,TM921.51

CLC: > Industrial Technology > Electrotechnical > Motor > AC motor > Induction motor
© 2012 www.DissertationTopic.Net  Mobile