The influence of the thickness of the common yoke on the density of the common yoke and the influence of the number of rotor poles in the magnetic gear on the density of the air gap and the performance of the combined motor were analyzed.Two kinds of optimal structures for the common yoke were proposed.Firstly,the theoretical thickness of the shared magnetic yoke and the number of harmonics in the three-layer air gap under a certain magnetic density were calculated by magnetic circuit method.The influence of the change of the thickness of the shared magnetic yoke on the magnetic density of the shared magnetic yoke and the influence of different times of harmonics on the performance of the motor were found.Then,in order to weaken the mutual influence between magnetic gear and asynchronous motor,two new structures are proposed in this paper.One is to add a magnetic separation layer in the shared magnetic yoke,and the other is to change the arrangement of rotor in magnetic gear to Halbach array.Finally,finite element simulation is used to verify the correctness of the theoretical analysis and the improvement of the motor performance by the new structure.
关键词
磁力齿轮/复合电机/隔磁层/Halbach阵列
Key words
magnetic gear/composite motor/magnetic septum/Halbach array
维普
万方数据