开关磁阻电机磁固耦合建模与分析

Analysis and modeling of magnetism and solid coupling for switched reluctance motors

针对开关磁阻电机振动和噪声问题,本文应用麦克斯韦应力法,考虑铁磁材料的磁饱和和边缘磁通效应,对气隙磁密和电磁力进行分析计算,建立了定子系统的磁固耦合非线性模型。并用有限元软件ANSYS对其进行分析验证。结果表明:该模型与二维有限元结果基本趋于吻合,在误差允许的范围内,且符合电机实际动行特点,验证了模型的有效性。

For the influence of vibration and noise problem of switched reluctance motors, the paper applies maxwell stress method, considering the magnetic saturation of ferromagnetic materials and the edge effect of flux, analyzing and calculating the flux density of air gap and electromagnetic force. The nonlinear mathematical model of magnetism and solid coupling of the stator system is set up. This model conforms to the actual operation characteristics of switched reluctance motor, provides the theo- retical reference for optimizing design of the motor. With a prototype as an example, results show that the model of the 2D finite element analysis of the results compared to verify the correctness of the mathematical model.