含径向通风道的永磁同步发电机电磁有限元分析

Finite Element Analysis of Electromagnetic of PMSG with Radial Vent Duct

在设计含径向通风道的电机时,计算铁心的有效长度需考虑径向通风道对铁心长度的损失,对于异步电机,已经有成熟的数学方法,但对于永磁同步发电机(PMSG),目前没有成熟的数学方法计算径向通风道对铁心长度的损失。结合ANSYS Maxwell软件的二维静态求解器,提出一种通过计算电机轴向气隙磁密分布的方法,得出计算含径向通风道的PMSG有效铁心长度的方法。仿真数据与试验数据高度吻合,证明了该方法的有效性。

During the process of designing motors with radial vent ducts,the influence of radial vent ducts on the loss of the iron core length should be considered when calculating the effective length of the iron core.Although there are mature mathematical methods for asynchronous motors,there is no mature mathematical method to calculate the loss width of vent ducts for permanent magnet synchronous generator(PMSG).Combined with the 2D magnetostatic solver of ANSYS Maxwell software,a method for calculating the flux density distribution of motor along the axial direction of gap is proposed.The effective iron core length of PMSG with radial vent duct is obtained,and the simulation data are highly consistent with the experimental data.The effectiveness of this method is proved.