Development of PMSM Drives for Hybrid Electric Car Applications

Permanent synchronous electric machine (PMSM) drives for the FAW hybrid electric car is investigated in this paper. The power system configuration of the FAW is introduced. The influences of the stator winding turn and the permanent magnet width on the torque-speed characteristic are analyzed. The torque-speed characteristic that the specification required is obtained by proper choice of these two parameters. The torque ripple and the harmonic contents of the electromotive force (EMF) are decreased by rotor shape optimizing to improve the traction performance and the supply quality. The rotor shape is optimized by the offset arc method. The analysis is verified by the sample PMSM experimentation