Hardware implementation of smooth region switching for wind turbine control using PDF controller

Control system for wind turbine will operate with different objectives throughout its complete wind speed regions: from cut-in speed to cut-out speed. This paper presents a method for smoothly switching of controllers between these operating regions. The controllers designed in this paper are based on Pseudo Derivative Feedback (PDF), which provides smoother dynamic and simpler tuning of parameters than general PI controllers. Simulations of the presented method are performed with a non-linear wind turbine model at first, followed by preliminary results of hardware-in-the-loop simulation. The simulation and hardware implementation results present a smooth performance of region switching between different controllers and verify the effectiveness of the controller proposed.