Dissertation > Excellent graduate degree dissertation topics show

Design and Research of the AC Three-Phase Energy Feedback Power Electronic Load

Author: MaKun
Tutor: XiongRui
School: Huazhong University of Science and Technology
Course: Power Electronics and Power Drives
Keywords: AC three-phase power electronic load Load characteristic simulation Energy feedback Direct current control Direct grid current control with harmonic suppression
CLC: TM46
Type: Master's thesis
Year: 2011
Downloads: 137
Quote: 1
Read: Download Dissertation

Abstract


With the technological development of power electronics, more and more power electronic supplies have being applied in every aspects of our society, these power supplies must take some long time aging and electrical properties test before leaving factories for guarantee the reliability in practical applications. The traditional testing method is to adopt the resistors, inductors and diode rectifier equipments as the testing load of those power supplies, but this method has the drawbacks such as high energy consumption, low testing efficiency and so on. If we adopt the power electronic load (PEL) which has being composed by power electronic elements such as IGBT as the testing load for the power supplies, this could not only precisely simulate the characteristics of the loads, but could return the output energy of the being tested power supply to the grid with high efficiency as well.For the AC PEL, there are more energy consumption types than the energy feedback types in both market and some published papers, and even more less papers concerning with the PEL that could simulate the nonlinear load. In addition, the simulated load parameters range is very small in some published papers, while others did not thoroughly research the mathematical model of the IGBT based PEL. Besides, there are also fewer papers concerning with the harmonic suppression for the rectifier part of the power supplies.For the above discussed researching background of the AC PEL, in this thesis, the author designed the control structures and controller’s parameters of the load simulation part and energy feedback part of the AC three-phase PEL both in ABC and dq0 coordinate, and analyzed the disturbance rejection performance of the being controlled electrical variables under designed controller. If the rectifying part of the power supply adopts the traditional diode rectifier topology, this rectifier would bring out large amount of harmonics which would contaminate the electro-magnetic environment of the grid, for this problem, the author researched and designed a control strategy named direct grid current control strategy to suppress this sort of harmonics.Through simulation and experiment of the AC three-phase PEL adopting the proposed control strategies under the two different coordinate, the results confirmed the effectiveness of all the proposed control strategies. Under both stationary and rotational coordinate especially the rotational coordinate, the results shows that the PEL has very fast current regulation speed, and relatively low THD and high load property simulation accuracy, Using the direct grid current control strategy, the results show that the PEL not only has the function of harmonic suppression, but these current control strategies have a more better current steady and dynamic response with a minimum electrical sensors used.

Related Dissertations

  1. Research on the Energy Feedback System of Urban Rail Transit,U270.35
  2. Research on Regenerative Braking Energy Feedback Inverter System of Urban Mass Transit,U270.3
  3. Aerodynamic Simulation of the Long-span Suspension Bridge,U441.3
  4. Research on Control System and Energy Feedback Technology of Flywheel Energy Storage,TM921.5
  5. Optimized Design of Electric Vehicle Drive-motor Controller,U469.7
  6. Study of AC Electronic Load Converter with Energy Feedback,TM461
  7. Electricity Seal with Synchronizing Type Belt Fatigue Life Test Bed Control System,TH871.3
  8. Research on Three Phase Grid-connected Inverter with Feedforward Repetitive Filter,TM464
  9. An Energy-Feedback Six-Phase Rectifier Based on Active Harmonic Suppression Technology on Dc Link,TM461
  10. Hybrid buses Efficiency of energy feedback system,U469.7
  11. Elevator Energy Feedback Controller Design Research,TM571
  12. The Research of Dstatcom Compensating the Unbalanced Load,TM761
  13. Research on Converter in Direct-driven Permanent Magnet Grid-connected Wind Power Generation System,TM46
  14. Design and Implementation of Discontinuous Current Type Electronic Load,TM46
  15. PWM converter based wind power grid control strategy,TM614
  16. Study on Single-phase Power Electonic Load with Energy Feedback,TM46
  17. Research on Flywheel Energy Storage System,TM910
  18. Application Research of Energy-fed Traction Power System for Metro,TM922.3
  19. Research and Design of Three Phases Three Wires Low Voltage SVG Controller,TM714.3
  20. Statcom Static Synchronous Compensator Direct Current Control Analysis and Research,TM761
  21. The Prallel Opration Research and Design of Low Voltage SVG,TM761.1

CLC: > Industrial Technology > Electrotechnical > Transformers, converters and reactors > Converter
© 2012 www.DissertationTopic.Net  Mobile