Modeling and control of PMSG based variable speed wind turbine using Proportional Resonant controller

Abstract

This paper presents a controlling scheme of a permanent magnet synchronous generator based variable speed wind turbine connected to the utility grid, and a full-scale back-to-back voltage source converter to regulate the voltage at a remote location. The Permanent magnet synchronous generator based wind turbine actively supports the utility grid due to its ability to independently control the active and reactive power at a set value by considering the operating condition and limits. A complete dynamic model of the Permanent magnet synchronous generator based wind turbine together with voltage source converter and a recently introduced controller is presented in this paper. This paper presents the voltage control technique by supervisory reactive power control scheme using Proportional Resonant controller. The basic functional of the proportional resonant controller is to introduce an infinite gain at a selected resonant frequency to eliminate steady-state error at that frequency. By using the Proportional resonant controllers, the converter reference tracking performance can be enhanced which reduces as steady state error controllers can be eliminated. KeywordsWind energy conversion system (WECS), PMSG, Voltage source converter (VSC), P-R controller.