Adaptive passivity-based nonlinear controller for wind energy conversion systems

This paper presents a control method to improve the efficiency and dynamic response of wind energy control systems (WECS) that use a permanent magnet synchronous generator (PMSG) operating under a wide input and load range. An adaptive passivity-based nonlinear controller (APBC) is developed and tested. This controller is designed to overcome the limitations of conventional dq-control methods, which exhibit slow performance and uncertain stability. The APBC controller increases performance and guarantees stability under all operating conditions. This controller is simulated and its performance is compared to that of a conventional controller. Experimental results are presented.