IPMSM交、直轴电感特性有限元分析

Inductance characteristics analysis of quadrature axis and direct axis based on IPMSM with finite element

内置式永磁同步电机(IPMSM),具有独特的弱磁扩速能力,恒功率调速范围较宽,广泛应用于新能源电动汽车中.电机良好的运行特性与其电感参数密切相关.从永磁同步电机矢量控制的角度,对电机的三相电感、互感与交轴、直轴电感之间变换进行理论分析,并在Maxwell 2D静磁场中,对电机绕组施加不同的电流激励进行有限元仿真分析,得到不同电流激励下直轴、交轴电感参数的分布,并对结果进行分析对比,为电机的优化设计分析提供依据.

Internal permanent magnet synchronous motor （IPMSM）, which is widely used in new energy electric vehicles, has unique flux-weakening ability to spread speed and wide speed range under constant power. The motor inductance par- ameter are closely related to it＇s good operation characteristics. From the viewpoints of the vector control for permanent synchronous motor, the transformation relationship between the three-phase inductance, mutual inductance and quadrature axis inductance are analyzed theoretically. The inductance parameter distribution of direct axis and quadrature axis under different current incentive are achieved by applying different current incentive for motor windings and using finite element simulation analysis in the Mawell 2D static magnetic field. And the results, which are analyzed, provide the basis for the optimization design and analysis of the motor.