Compensation Strategy of Short-Circuit Fault for a Single-Winding Bearingless Switched Reluctance Motor

Due to all winding currents are controlled independently, the fault-tolerant control of single-winding bearingless switched reluctance motor (SWBSRM) is more flexible. In this paper, a compensation strategy for short-circuit fault in SWBSRM is investigated to improve the reliability of BSRM. Firstly, the mathematical model with compensation for short-circuit fault is established with consideration of two-phase coupling. Secondly, the validity of the proposed model is verified by the finite element method (FEM). Then a compensation strategy based on this model is proposed to realize rotor levitation in short-circuit fault mode. Finally, the proposed strategy is verified by simulation.