Design and performance analysis of permanent magnet claw pole machine with hybrid cores

Permanent magnet claw pole machine (PMCPM) is a new type of transverse flux permanent magnet machine (TFPMM). Due to its special structure, its stator core is usually made by soft magnetic composite (SMC) materials. Based on PMCPM with SMC cores, a new PMCPM with hybrid cores is proposed in this paper. The hybrid core is produced by the combination of silicon sheet cores and SMC cores. Compared with the PMCPM with SMC cores, the PMCPM with hybrid cores has higher average torque and efficiency. However, as the permeability of silicon sheets is higher than that of SMC material and it replaced the SMC in part of stator yoke, the power factor of PMCPM with hybrid cores is lower than that with SMC cores. For performance evaluation, 3-D finite element method (FEM) is adopted, and the PMCPM with SMC cores is used as the benchmark comparison.