A new robust controller approach for a wind energy conversion system under high turbulence wind velocity

Wind energy is a uncertain fluctuating resource, requires tight control management. So, the classical proportional integral (PI) control is not perfect during high turbulence wind velocities. This is raising interest towards the robust control strategies. Due to implementation complexity for a continuous H∞ controller, and availability of the high speedy microcontrollers, the design of a sample-date or digital H∞ controller is very important for practical implementation. This paper is proposed a digital H∞ controller scheme comprises for both generator and grid interactive power converters, and the control performance is compared with the conventional PI controller. Effectiveness of the proposed method is verified by the numerical simulations.