Fuzzy Logic Based Vector Control of a Doubly-Fed Induction Generator in Wind Power Application

Abstract

In this article, a fuzzy PI gain scheduler for a vector controller is developed to control a doubly-fed induction generator used in a variable speed wind turbine. Effects of both main flux and leakage flux saturation are considered in the machine model in order to obtain more realistic results. Extensive simulations have been carried out on the proposed system to investigate its dynamic performance. A comparison between the developed vector controller with the proposed fuzzy PI gain scheduler and the same vector controller with a conventional PI controller employing fixed gains shows that using the fuzzy PI gain scheduler, the system has better performance and faster dynamic response without any steady-state error.