A Novel P-Q Control Algorithm for Grid Connected Based PWM Converter Applied a Synchronous Generator for a Variable Speed Wind Turbine

摘要

This paper presents the electrical power conversion system which is developed for a synchronous generator in order to apply with a variable speed wind turbine system. In the wind energy conversion system, a synchronous generator is converted the mechanical energy into electrical energy. A B6 rectifier and a boost chopper circuit are utilized to maintain constant intermediate DC voltage. The average power is converted entirely by the PWM converter, consists of B6 voltage-source inverters. A novel P-Q control algorithm is used PI controller to control the active and reactive power to utility grid with PQ theory technique. For the hardware implementation, the system consists of a 1 kW four poles synchronous generator and the voltage source inverter controlled output current by hysteresis controller method. The algorithm is implemented in a dSPACSDS1104DSP together with Matlab/Simulink program. The validity of the proposed method is verified by both simulation and experimental results under power transferred into grid in term of power quality such as real power and reactive power, and so on.