关键词: 稀土永磁同心式电磁齿轮, 同心式永磁齿轮, 转矩密度, 参数优化

Abstract:

A structure of rare earth permanent coaxial electromagnetic magnetic gear (REPCEMG) was presented. Its stator winding can replace the permanent magnet outer rotor of the coaxial magnetic gear ,and the new structure has one rotor and double air gap .It not only cancels a permanent magnet, but also has characteristic of stepless speed regulation. The simulation model of REPCEMG was established based on the ANSYS environment. A method for determining the torque and parameters of REPCEMG was given,and the preliminary design was made. The simulation analysis of the relationship between the parameters such as the thickness of the permanent magnet, the thickness of the air gap, the thickness of the magnetic pole and the ratio of the magnetic pole to the torque density was carried out,and the above parameters were optimized one by one. The results show that the optimized output torque was increased by 15.1% and the he torque amplitude was decreased by 27.5 %. The optimized output speed was maintained near by 96.7 r/min, its amplitude was decreased by 35%. This indicates that the optimized parameters can improve the performance of REPCEMG.

Key words: rare earth permanent coaxial electromagnetic magnetic gear (REPCEMG), coaxial mMagnetic gear, torque density, parameter optimization