Design and Optimization of a Novel Fault-Tolerant Axial Field Modular Spoke-Type Permanent Magnet Machine

A novel fault-tolerant axial field modular spoke-type permanent magnet (AFMSTPM) machine is proposed and investigated. A multi-level multi-objective optimization method is employed to improve the electromagnetic performance of the machine in which the design variables are divided into two groups and optimized with two different optimization methods, respectively. The test results demonstrate the good performance and verify the validity of the proposed optimization method, which give some guidance and reference for the design of axial field modular spoke-type permanent magnet machine.