Losses and pulsating torques in dfigs with unbalanced stator and rotor excitation

This paper explores the operation of doubly fed induction generator (DFIG) under unbalanced supply conditions. Supply unbalance generally has a negative effect on induction machine operation, resulting in increased Joule loss and pulsating torques. The aim of this work is to quantify the effect that stator and/or rotor supply unbalance has on these aspects of DFIG performance. © 2008 IEEE