Abstract
The increasing importance of fuel saving and conservation of natural environment in the world has been responsible for a revival of interest in so-called "natural energy". One of the most expected future natural energy is wind power. The wind power system has optimum operating point which extracts available maximum power from generator. Moreover, the wind power varies with time and is sparse. Therefore, the wind power system requires the maximum power point tracking control of generator to obtain electric energy as large as possible.This paper proposes the maximum power point tracing control of wind power system with step-down chopper by using fuzzy control to obtain the maximum output power from generator. This method only uses the output power information, and membership functions consist of duty factor α and output power. Therefore, this control method can track maximum power point without complicated calculatino and mathematical model.
