Simulation of Variable-Speed Wind Generation System Using Boost Converter of Permanent Magnet Synchronous Generator

This paper proposes a variable-speed wind generation system using the boost converter. The proposed system has three speed control modes for the wind velocity. The control mode of low wind velocity regulates the armature current of the generator with the boost converter to control the speed of wind turbine. The control mode of middle wind velocity regulates the DC link voltage with the vector controlled inverter to control the speed of wind turbine. The control mode of high wind velocity regulates the pitch angle of the wind turbine with the pitch angle control system to control the speed of the wind turbine. The hybrid combination of three control modes extends the variable-speed range. The proposed system simplifies maintenance, improves reliability, and reduces the costs compared with the variable-speed wind generation system using a PWM converter. This paper describes the control strategy and modeling for a simulation of the proposed system using Simulink of Matlab. It also describes the control strategy and modeling of a variable-speed wind generation system using a PWM converter. The steady state and transient responses for wind velocity changes are simulated using Matlab Simulink. This paper verifies the fundamental performance of the system using a boost converter by discussing the simulation results of both systems. (C) 2009 Wiley Periodicals, Inc. Electr Eng Jpn, 169(4): 37-54, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/eej.20902