High speed permanent magnet motor design and power loss analysis

This paper introduces the solution of a 150 kW high speed permanent magnet motor (HSPMM). The motor is studied with its design considerations concluded for high speed application at first; then the HSPMM air gap flux density is analytically calculated and verified by finite element method (FEM); the motor stator slot number and slot opening width are studied and investigated to obtain a desirable motor performance, then the optimized rotor pole arc pole pitch can also be employed to increase the fundamental component proportion in the motor back electromotive force (EMF), while the optimized rotor to reduce the power loss for HSPMM is also presented.