Dissertation > Excellent graduate degree dissertation topics show

Research on Dual-PWM Converter and It’s Control Strategy

Author: TangHuiGang
Tutor: ChenYiGuang;XuGuangHui
School: Tianjin University
Course: Electrical Engineering
Keywords: dual-PWM converter vector control based on virtual flux direct torque control SVPWM sensorless speed control
CLC: TM921.51
Type: Master's thesis
Year: 2010
Downloads: 143
Quote: 0
Read: Download Dissertation

Abstract


The AC Variable Frequency (VF) speed regulation has brought huge economic and social benefits in various fields. At present, the AC/DC/AC VF speed regulation system is the most widely used form. However, due to the limitation of the circuit structure, the traditional AC/DC/AC converter causes harmonic pollutions to the power grid. A novel dual-PWM converter is introduced in this paper. The converter composed of a PWM rectifier and a PWM inverter without any additional circuits can realize bidirectional flux of energy and improve the dynamic performance of the system.Firstly, the structure and the working principle of this dual-PWM converter are analyzed. Secondly, the working principle and mathematical model are analyzed in details. Compared to the traditional voltage oriented vector control, the virtual flux oriented vector control, which is one type of the direct current control based on space vector pulse width modulation (SVPWM), can obtain higher power factor, lower harmonic distortion, reduce system cost and volume, and provide stable direct current voltage for the inverter. While the traditional direct torque control has some shortcomings, including unsatisfied low-speed performance, torque rippling and unfixed switching frequency, the SVPWM-based direct torque control with no speed sensor is proposed. This method effectively reduces the cost of the system and enhances the stability and reliability of the system.Ultimately, the rectifier and the inverter systems are simulated in MATLAB7.0/Simulink. And the system was realized on TMS320LF2407A digital signal processor. The experimental results confirmed the theoretical analysis.

Related Dissertations

  1. Study on Drive and Control System of Five-Phase PMSM Based on FPGA,TM341
  2. Simulation Research on Compound-Structure Permanent-Magnet Synchronous Machine System Used in Hybrid Electric Vehicles,TM341
  3. The PCH modeling and control of PWM rectifier,TM461
  4. Research on the Control Strategy for Cascade Multilevel STATCOM under Unbalanced Condition,TM761.1
  5. Development of Electric Actuator Servo System,TM921.541
  6. Research on Induction Motor Variable Frequency Starting Power Supply,TM343
  7. Research on DC1500V Metro Auxiliary Power Supply System,TN86
  8. Research & Design of Three-Phase PV Grid-connected Inverter,TM464
  9. FPGA-based motor motion controller design and implementation,TM301.2
  10. Permanent magnet direct drive wind turbine converter control technology research,TM46
  11. Brushless doubly- fed wind generator Direct Torque Control Technology,TM315
  12. VSCF doubly-fed wind turbine maximum power point tracking control,TM614
  13. Appliances phase permanent magnet motor control system,TM341
  14. AC induction motor side inverter wind turbine research,TM464
  15. STM32-based asynchronous motors SVM-DTC system design,TM921.2
  16. Permanent magnet AC servo system without position sensor control study,TM34
  17. SVPWM Based on DSP and motor speed regulation system design and research,TM921.51
  18. Induction Motor Direct Torque Control System Design and Research,TM343
  19. DsPIC based brushless DC motor control system design,TM33
  20. Research on Permanent Magnet Synchronous Motor Vector Control System Based on Dead-Time Compensation,TM341
  21. 1.5MW DIFG Wind Turbine Converter Control System,TM315

CLC: > Industrial Technology > Electrotechnical > Electrification,electrical energy application > Electric drive ( electric drive ) > Control system > Variable frequency control system
© 2012 www.DissertationTopic.Net  Mobile