Fuzzy Based Output Feedback Control for wind energy conversion System: An LMI Approach

This paper addresses the problem of regulating wind energy conversion system by using fuzzy output feedback controller. First, a Takagi-Sugeno fuzzy model is employed to represent the nonlinear dynamics of the wind energy conversion system. Then, based on the fuzzy model and utilizing the concept of parallel distributed compensation, a fuzzy observer based fuzzy controller is developed to stabilize the nonlinear system. Sufficient condition for stability of WECS fuzzy model using fuzzy output feedback controller are derived. The controller design problem is caste as a linear matrix inequality (LMI) which can be solved very efficiently using convex optimization techniques. The design technique is applied to a dynamic model of wind energy conversion system to illustrate the feasibility of the proposed solution. The fuzzy observer and fuzzy controller are capable of disturbance rejection