Research on Control Strategies for Doubly Fed Induction Generator

Abstract

The control methods of the source-side (stator-side) and rotor-side converters of Doubly Fed Induction Generator (DFIG) are researched in the paper. The rotor-side converter of the DFIG introduces the stator flux linkage oriented vector control strategy, realizes track of maximum wind-energy, independently controls the active power, reactive power. The source-side converter of the DFIG maintains the voltage of DC bus, regulates the power factor of source-side by adopting grid voltage oriented vector control strategy. Based on PSCAD/EMTDC software for the power system simulation, this paper constructs simulation models including wind speed ,wind turbine, DFIG, the rotor-side and source-side converters. The result of simulation proves rationality and efficiency of the proposed method.