Pitch Angle Control of Wind Turbine using Fuzzy Logic

Abstract

A wind turbine is a device that converts kinetic energy from the wind into electrical power. The speed control of wind turbine rotation is necessary for maximum energy capture and to keep the turbine components within designed speed and torque limits. In this paper, an advanced pitch angle control strategy based on fuzzy logic is proposed. The control input variables for the fuzzy logic controller are generator output power and wind speed and the output is pitch angle reference. A small change in pitch has effect on the extraction of available energy, reduction of torque and output power variation to the grid. The effectiveness of the proposed method is verified by simulation results for a 1.5MW induction generator wind turbine system. Index terms-Fuzzy logic controller ; Pitch angle controller ; Wind turbine.