Modeling and Analysis of Five-phase Fault-tolerant Permanent Magnet Vernier Machine with Equivalent Magnetic Network Method

In order to accurately and efficiently analyze the performance of five-phase fault-tolerant permanent magnet vernier machine (FT-PVM), an equivalent magnetic network method (EMNM) combining magnetic circuit and mesh is proposed in this paper. The magnetic circuit based EMNM is adopted for the stator with uniform and orderly magnetic field. And the mesh-based EMNM is adopted for the complex magnetic field area: air gap and rotor. The finite element method (FEM) is applied to verify the accuracy and rapidity of the proposed EMNM. The results show that the no-load back EMF calculated by the FEM and the proposed EMNM have an error of 3.313%. And the EMNM reduces the simulation time to 2. 9s, while the FEM takes 74s.