开关磁阻电机的三维有限元分析及非线性研究

Three-dimension Finite Element Method of Switched Reluctance Motor and Non-linear Study

针对开关磁阻电机双凸极结构导致的磁场严重非线性,利用三维有限元分析法对开关磁阻电机的电磁场进行研究。在三维分析中,考虑了端部效应对电机电磁场分布的影响。采用整体建模的方法,并在施加载荷时引入跑道线圈这一概念。通过仿真表明,三维有限元分析能更好地反映电机实际的磁场分布,得出电机静态曲线,为电机的控制研究奠定了基础。将有限元分析所得磁化曲线及电感、转矩数据用于改进的开关磁阻电机调速系统的模型中,来验证电机的静态性能和动态性能。

For the nonlinear characteristics of switched reluctancemotorwith two protruding pole, this paper analyzed the entire filed of the switched reluctance motor with three dimensional finite element analyses by using three-dimensional modeling method. In three-dmi ension finite elementmethod, wholemodelingwas adopted and racetrack coilwas introduced while adding loads. The result indicates thatthree-dmi ension finite elementanalysis can reflectthemagnetic field ditribution ofmotorand getstate character curve to be ready fordeveloping control study ofswitched reluctancemotor. Magnetization curves, inductance and torque charactercan be connected with switched reluctance drive to validate the steady and dynamic performance ofmotor.