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A Study On Modeling and Simulation of VSCF Wind Power System

Author: FuHaiTao
Tutor: YangChangAn
School: Huazhong University of Science and Technology
Course: Motor and electrical
Keywords: Wind power VSCF Wind turbine Doubly-fed induction generator AC - AC inverter Vector control
CLC: TM614
Type: Master's thesis
Year: 2005
Downloads: 1764
Quote: 30
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Abstract


VSCF wind power generation technology is being more and more attention because of its efficiency and practicality , with good prospects for development . This article is dedicated to research VSCF wind power generation technology , starting from the analysis of its operation mechanism , compared to fixed pitch , variable pitch and variable speed constant frequency wind power difference , selected doubly-fed VSCF program : at low wind speeds the stage variable pitch adjustment pursuit of maximum wind energy capture , high wind speeds by controlling the current of the rotor side of the double-fed to the stator output constant frequency and active , and independent regulation of reactive . Pitch from the wind turbine as wind energy is converted to mechanical energy equipment is an important part of the wind power generation system , which directly affects the wind energy resources matching the operating characteristics of the wind power generation system . Wind theory , discusses the selection of the wind turbine equipment , establish a mathematical model of the wind speed and wind turbine system . Double-fed asynchronous motor is the core of VSCF wind power generation system . This paper analyzes the basic operating characteristics that the doubly-fed generator has the incomparable advantage of ordinary AC motor ; study the relationship between the steady-state circuitry and power balance , and MT - 0 coordinate system - order equation of state derived in detail , establish stator flux oriented vector control system, the stator active and reactive power decoupling control, motor control simplistic . The inverter is the key to achieve VSCF doubly-fed machine running , 6-pulse AC - AC inverter is selected as the excitation power . Further analysis to establish the main circuit structure, cosine intercept method and the trigger pulse generation principle , the 6-pulse AC - AC Converter mathematical model , and process interface with the inverter and generator . Finally, Matlab6.5/Simulink5.0 simulation software components of the system simulation model , and simulation study . The simulation results show that the model is correct, VSCF wind power generation system has good operating characteristics .

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CLC: > Industrial Technology > Electrotechnical > Power generation, power plants > Variety of power generation > Wind power
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