Dissertation > Excellent graduate degree dissertation topics show

A Study of AC Excitation Wind Power Generation System and Its Excitation Control Strategies

Author: HeYongQian
Tutor: LuJiMing；MaoChengXiong
School: Huazhong University of Science and Technology
Course: Proceedings of the
Keywords: Wind Power Generation Ac Excitation VSCF LVRT Simulation of wind power generation system
CLC: TM315
Type: Master's thesis
Year: 2011
Downloads: 24
Quote: 0
Read: Download Dissertation

Abstract


As one kind of the most important renewable energy, wind power is of significance in alleviating the world’s energy crisis and environmental crisis, and has attracted a great attention around the world. Almost 378 Wind Farm will be built in 2010 in China.Ac excitation generator,was called doubly-fed generator in many articles,has been used in most wind farms. With the development of high-efficiency and high-capacity for wind turbine, ac excitation wind power generation system becomes the main trend of nowadays wind power generation technology for its advantages of its inverter with small size, light weight, low cost and high efficiency. For these reasons, studying of excitation control technology for ac excitation wind power system is necessary.Firstly, the operating principle of ac excitation wind power system is analyzed in this paper, and then the wind model theory and wind machine model are introduced for the simulation of wind turbine control.Secondly,the scheme for cutting in of ac excited wind turbine generator is proposed by studying the cutting-in control strategy based on stator flux linkage orientation; then control strategy of cutting in that does not depend on the parameters of the generator or the position of the rotor is proposed. The control strategy of ac excitation after the generator that has been connected to the power grid is analyzed.Then, based on the theory of ac excitation wind power system, stator flux oriented vector control strategy and direct power control strategy have been studied and compared briefly, then the linear optimal control strategy was proposed to ac excitation wind power system for its transient stability.The transient process of ac generator under low vltage fault is analyzed. The ac excitation control performance of the generator under low vltage fault was simulated in Matlab/simulink. At last, experiments are carried out on a 5.5kW generator test rig to test the theories.

Related Dissertations

  1. Grid-Side Converter Control and Wind Turbine Emulator in Direct Drive Wind Power System,TM46
  2. Research on Power System Static Security Risk Assessment Method,TM732
  3. Wind turbine low voltage ride through characteristics and test methods of control strategies,TM315
  4. VSCF doubly-fed wind turbine maximum power point tracking control,TM614
  5. Based on hydraulic transmission for wind energy machine \,TM614
  6. The Control Technology of the Rotor-side Converter of the Double-fed VSCF Wind Turbine,TM461
  7. Study on Operating Simulation and Harmonic Characteristics of VSCF Wind Power Generation System,TM614
  8. Pitch control technology in Fuxin Wind Farm Production and Construction,TM614
  9. 1.5MW DIFG Wind Turbine Converter Control System,TM315
  10. Wind power generation system variable pitch control,TM315
  11. Design and Analysis of a Novel PM Wind-power Generator with Opposite-rotation Dual-Rotor,TM341
  12. Study on Stability and Economical Efficiency of AC Excited Hydrogenerator Unit Operation,TM312
  13. The Design and Implement of the Variable Pitch Controller for MW Wind Turbine,TK83
  14. Research on Doubly-fed Inductive Wind Generators Connected with Grid Stability,TM614
  15. The Research on Doubley-fed Wind Turbine Control System and Converter,TM315
  16. Simulation of Doubly-Fed Variable Speed Wind Power Generation System,TM614
  17. A Study of Variable Speed Constant Frequency Doubly Fed Wind Power Generation System and Its Excitation Control Strategies,TM614
  18. Research on Direct Power Control Technology of Variable Speed Constant Frequency Doubly-Fed Wind Power Generation,TM461
  19. Design of Back to Back PWM Converters for Double-fed Wind Power System,TM315
  20. Experimental Research on Excitation Controller of Variable-Speed Constant-Frequency Doubly-Fed Generator,TM614

CLC: > Industrial Technology > Electrotechnical > Motor > Generators, large the generator group ( Zonglun,) > Wind turbines
© 2012 www.DissertationTopic.Net  Mobile