ADRC Performance in Power Control of DFIG used in Wind Turbine During Grid Voltage Fault

Abstract

This paper presents the performance of Active Disturbance Rejection Control (ADRC) applied to power control of Doubly Fed Induction Generator (DFIG) used in wind turbine during the grid voltage fault such as overvoltage and under voltage.In the situation of a grid fault, the characteristics of the grid changes and also the wind turbine might lose the connection with the grid. The main objective of this article is to evaluate the ADRC performance, and to propose an improved power control of DFIG during the voltage fault without losing the connection with the grid in case of overvoltage and undervoltage fault.The improvement method is based on ADRC controller and adding a circuit to protect the vulnerable rotor converters such as a DC Chopper and a Serial Active Crowbar Resistance (SACR).In this article we synthesize the ADRC controllers applied to turbine, Rotor Side Converter (RSC) and Gride Side Converter (GSC) control strategy. The dynamic model of DFIG and wind system are simulated in Matlab-Simulink environment.