Optimal design for cogging torque reduction of transverse flux permanent motor using particle swarm optimization algorithm

Great emphasis is paid on transverse flux permanent motors (TFPM) in recent years especially in powerful propulsion system. However, the cogging torque in TFPM leads to mechanical vibration and noise inevitably. This paper presents a new TFPM with combined stator and concentrating flux rotor configurations. The related design parameters that reduce the cogging torque are investigated by using equivalent magnetic network method (MNM) for magnetic field analysis and particle swarm optimization (PSO) algorithm for optimization. The computation result shows the PSO can minimize the cogging torque substantially without deterioration the performance of TFPM