考虑磁路饱和效应的无刷直流电机电感参数研究

Inductance Parameter Study of BLDC Motor Considering Magnetic Saturation Effect

为研究无刷直流电机电感参数的动态特性,从磁路饱和效应的基本原理出发,通过电机磁路分析,结合理论推导,得到了基于磁路法的无刷直流电机电感计算方程.采用了基于Ansoft Maxwell软件的有限元法对基于该电感方程在Matlab/Simulink环境下进行仿真计算得到的电感变化规律进行了验证.同时结合矢量理论对电感参数随电机转子位置周期变化的规律进行了系统的分析.该研究成果对深化无刷直流电机的理论,正确地确定电感参数及建立精确的分析模型都有重要意义.

In order to investigate the inductance parameter dynamic behavior of BLDC motor , the induct-ance equations were derived based on magnetic circuit method through theoretical derivations and magnetic path analysis , proceeded from the basic principle of magnetic saturation effect .The change rule of inductance was summarized from the calculation based on these equations by Matlab /Simulink and verified by finite element method using Ansoft Maxwell software .Combined with vector theory , the inductance periodic variation over rotor position was systematically analyzed .The outcomes achieved here may have important implications for deepening BLDC motor theory and building high -precision analytical model .