Current Control of a Six-Phase Induction Generator for Wind Energy Plants

A wind energy conversion system (WECS), using a six-phase asymmetrical induction generator, is elaborated in this paper. The current control strategy for the system, including the method of suppressing imbalance caused by the asymmetrical conditions in the six-phase generator, is discussed. A new modified transformation matrix, which allows a more effective suppression of the asymmetries in the six-phase machine, is suggested. Simulation results, obtained using Matlab/Simulink, are used to verify the effectiveness of the suggested method.