Influence of anti-short-circuit design on the performance of dual-redundancy PMSM

Recently, redundancy permanent magnet synchronous motor (PMSM) is widely applied in aviation. To improve the reliability of redundancy PMSM, the short-circuit current should be restrained via anti-short-circuit design. For the further optimization design of redundancy PMSM, it is essential to research the influence of anti-short-circuit design on the PMSM performance. Therefore, in this paper, two dual-redundancy PMSMs are designed without and with anti-short-circuit design method. Then, via theoretical analysis and simulation, the performance differences between the two PMSMs are researched, such as back electromotive force, electromagnetic torque, stator core loss and dynamic performance. The results show that anti-short-circuit design degrades the electromagnetic torque and dynamic performance, and increases the stator core loss.