۱٫ Introduction

۲٫ Structure of motor for aero car

۳٫ Optimization performance parameters of rotor based on Taguchi algorithm

۴٫ Finite element experiment verification

۵٫ Conclusion

References

Due to the long development cycle and high cost of aeronautical motor, the performance parameters of the rotor with Halbach array structure are optimized by Taguchi algorithm. The performance parameters mainly include the thickness of magnetic steel, the number of blocks per pole as well as magnetizing angle. The evaluation index of the optimized parameters is that the volume of the magnetic steel used is the smallest, the air gap magnetic density is the largest and its shape is closest to the sinusoidal. The experimental group is verified by finite element method. Finally, the rotor structure parameters satisfying the high power density and high air gap magnetic density of aeronautical motor are determined, which shortens the product development cycle and reduces cost of manufacture.

Introduction

The light weight of traditional motor is mainly focused on rotor, housing, and mount and stator. Solutions such as shaft opens pore will decrease strength of shaft; the housing, mount and stator achieve lightweight are depend on the way of developing new materials [2-4]; so the process of motor lightening is slow and the problem can not be solved fundamentally In this paper, for the rotor with Halbach array permanent magnet designed for aero car, Taguchi algorithm is proposed to optimize the height of Halbach array magnetic steel to reduce the volume of magnetic steel, and then reduce the curb weight of motor. At the same time, the number of Halbach arrays and magnetizing angle of magnetic steel are analysed. The optimal number of blocks per pole and the optimal magnetizing angle are determined to produce more larger and most uniform air gap flux density.