Adaptive Control of the Wind Turbine Transmission System for Smooth Power Generation

Wind energy sector is growing rapidly now a day's as compared to other renewable sources of energy. The energy conversion from wind to electrical energy through hydrostatic transmission (HST) has been studied. The hydrostatic transmission system has been used for the power transfer from low-speed wind turbine rotor shaft to a high-speed generator shaft using variable displacement axial piston pump and motor. A fuzzy PID controller has been used to control the rotational speed of the pump and motor by controlling the displacement ratio. The hydraulic and overall efficiency has found to be approximately 82.2% and 38.8%, respectively. The performance of present dual control system has been found quite satisfactory as it is capable of maintaining output motor speed better compare to the single control mode. The constant output motor speed ensure quality power output in fluctuating wind speed and gusts.