A Review on Control Strategies for Wind Power Generation with DFIG for Smart Microgrid

Abstract

A review on control techniques of the Wind Power Generation (WPG) using Doubly Fed Induction Generator (DFIG), integrated to the microgrid/utility grid, has been presented, in this paper. The DFIG contains a three-phase back-to-back Voltage Source Converter (VSC), which has two converters such as Rotor Side Converter (RSC) and Grid Side Converter (GSC). The RSC has been aimed to control stator flux, to deliver reactive power to DFIG, and to track maximum power generation by the WPG. The GSC is targeted to balance the active power of WTG system, and maintain the voltage of dc link of back-to-back VSC. The modelling of WTG system has also been presented for developing its fast response controllers. The controllers of the back-to-back VSC have been widely designed using a rotating d-q synchronous reference frame. For validating the reviewed control strategies, a smart microgrid consisting of WPG system, second generating system as photovoltaic system, and load, has been presented under grid connected mode. The validation test is conducted in the MATLAB environment.