Dissertation > Excellent graduate degree dissertation topics show

Grid-Side Converter Control and Wind Turbine Emulator in Direct Drive Wind Power System

Author: LiWeiWei
Tutor: XuDianGuo
School: Harbin Institute of Technology
Course: Electrical Engineering
Keywords: permanent magnetic direct-drive wind power generation PWM converter vector control based on grid voltage orientation three-phase software PLL soft start wind turbine emulator
Type: Master's thesis
Year: 2008
Downloads: 503
Quote: 0
Read: Download Dissertation


Wind energy is the world’s fastest growing renewable energy source in recent years, and it has drawn worldwide attention. Due to high efficiency, simple topology and stable operation, variable speed constant frequency (VSCF) direct-drive wind power generation system using permanent magnet synchronous generator (PMSG) is the development trend and one of the focuses of wind power generation system research.Firstly, PWM converter is selected to be the power converter of direct-drive wind power generation system based on PMSG because the generator-side converter and grid-side converter can be controlled separately. The device parameters of main circuit of PWM converter are optimal designed. Software framework, structure and functional modules are designed after choosing appropriate DSP type.Secondly, successful control strategy of grid-side PWM converter is the key technology for direct-drive wind power generation system. Double closed loop control scheme of grid-side PWM converter based on PI regulator is designed and three phase software PLL is used in order to improve the accuracy of grid voltage orientation. Soft-start strategy is designed and implemented to minimize the rush current when the system starts.On the other hand, in the development of wind power generating system, the wind turbine emulator becomes more and more important because it can provide controllable wind turbine characteristics. Simplified mathematical model based on the CT-λcurve is constructed, the system structure and emulation method are analyzed, hardware and software are designed and implemented, and a laboratory set-up is built based on DC motor. Experimental results show that the wind turbine emulator is as good as expected.

Related Dissertations

  1. Saw motor energy-saving controller for tilting sand stone processing DSP-based research and development,TM343
  2. Belt variable speed drive systems research,TH222
  3. Permanent magnet direct drive wind turbine converter control technology research,TM46
  4. With soft start function without arc contactor research,TM572
  5. The Features of Softstarter and Its Application in the Control System,TM573
  6. Design and implementation of application uCOS-Ⅱ , three-phase AC induction motor soft starter,TM343.2
  7. Research on High-voltage Asynchronous Motor Soft-starter Based on Variable Reactor,TM343
  8. Research on Dual-PWM Converter and It’s Control Strategy,TM921.51
  9. Research on the Soft-Start Device Based on Hydraulic Brake and Planetary Gear Speed Adjustion,TH222
  10. Research on the Starting and Braking Integration Automatic Control System of Belt Conveyor,TD634
  11. The Research of Low Power Tri-phase SRD,TM352
  12. The Research of Soft Start Based on Weightiness Load on the Double-variable Ac-Ac Converter,TM921.51
  13. The Research on Doubley-fed Wind Turbine Control System and Converter,TM315
  14. Load commutation frequency conversion technology in the application of high voltage motor starting,TM306
  15. Design and Implementation of motor energy-saving control technology,TM343
  16. Research on Direct Drive Wind Power Variable Speed Constant Frequency System,TM614
  17. Application and Research on High Voltage Thyristor Soft-start of Catalysis Main Fan,TN344
  18. Research on Control Strategies of Converter in Direct-Driven Wind Generation System,TM315
  19. Control of Converters for Megawatt Level DFIG,TM614
  20. Research on the Control of Direct-Drive Permanent Magnet Wind Turbine Generator System,TM614

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