Control Of Small Wind Turbine In The High Wind Speed Region

Abstract

This paper deals with the control of small power wind turbine using fixed-pitch blades. A three-phase permanent magnet (PM) brushless generator is connected to the grid through a double stage converter: active rectifier (VSR) + d.c.-link + inverter (VSI). A very simple and effective control strategy of the generation set (PM generator +VSR) is presented; it is mainly aimed to extend the wind-turbines operation range to high wind-speed region, maintaining the generated electric power constant and equal to its “rated” value.