一种优化齿槽转矩抑制永磁同步电机振动和噪声的方法

摘要

The vibration and noise of motor could be reduced by keeping a reasonable control on cogging torque.To minimize the vibration and noise of PMSM,an optimization of four main parameters (pole-arc coefficient,eccentric distance,air-gap length and magnet thickness) that affect the cogging torque was done,combining with the finite element analysis method,to analyze the vibration and noise of PMSM.First of all,select a certain number of samples by using orthogonal experiments and fit them with SVM to get a regression equation,then,the ideal cogging torque could be obtained through the optimization of the equation.Finally,took the cogging torque into the motor model for the analysis of the vibration and noise of motor.%合理控制齿槽转矩可以降低电机的振动和噪声.为了降低永磁同步电机的振动和噪声,对影响齿槽转矩的四个主要参量(极弧系数、偏心距、气隙长度、磁极厚度)进行优化,然后利用有限元分析软件,进行电机的振动和噪声的分析.首先利用正交试验选取一定数量的样本;然后利用支持向量机对其进行拟合,得到回归方程;利用微粒群优化算法对其回归方程进行寻优,得到理想的齿槽转矩;最后将齿槽转矩带入电机模型中进行电机的振动和噪声的分析.