Real Time Implementation of Sliding Mode Supervised Fractional Controller for Wind Energy Conversion System

Abstract

Wind energy conversion system is increasingly taking the place to be the most promised renewable source of energy, which obliges researchers to look for effective control with low cost. Thus, this paper proposes to apply a suitable controller for speed control loop to reach the maximum power point of the wind turbine under sever conditions. In literature, a major defect of the conventional PI controller is the slow response time and the high damping. Moreover, many solutions proposed the fractional order PI controller which presents also some weakness in steady state caused by the approximation methods. The main idea is to propose a Sliding Mode Supervised Fractional order controller which consists of PI controller, FO-PI controller and sliding mode supervisor that employs one of them. A prototype is built around real-time cards and evaluated to verify the validity of the developed SMSF. The results fulfil the requirements and demonstrate its effectiveness.