Research on a Novel Control Method for Effectively Reducing Slip Loss Applied to Brushless Doubly-fed Machine

Abstract

To avoid the insulation-based fault problem caused by the large slip loss of the brushless doubly-fed machine (BDFM), this paper proposes a dual electrical port slip vector control method that can effectively reduce the slip loss. Firstly, this paper introduces the mathematical model of the BDFM, then introduces the working principle of dual electrical port operation, then designs the slip frequency vector controller according to the rotor field orientation, and at the same time gives the realization of the control system necessary condition. Finally, the control algorithm in this paper is compared with the control algorithm under single electrical port. The results show the advantage of the dual electrical port control method and its robustness when there are deviations in parameters.