基于局部均值分解的直流电机换向电流分析  

Study on LMD- Based DC Motor Commutation Current Analysis

作　　者：姬少龙[1] 季宝杰[1] 李观文 李建锋 

机构地区：[1]河南农业大学 [2]96520部队 [3]防空兵学院

出　　处：《微特电机》2016年第5期21-25,共5页Small & Special Electrical Machines

基　　金：河南省科技厅科技攻关项目(142102210158)

摘　　要：提出了基于局部均值分解(local mean decomposition,LMD)的直流电机换向电流分析新方法。首先,运用LMD将起动时的电枢电流分解成系列乘积函数(Product Function,PF)与剩余分量之和;其次,定义了相邻PF相关系数这一概念,并据此确定组成换向电流和直流成分的PF阶数;最后,对换向电流进行基于LMD的能量谱分析,可获取换向电流的能量-时间-频率的三维关系图。相关仿真和实验结果表明了所提方法的正确性。A new method of analyzing DC motor commutation current was presented based on LMD. Firstly,the shortcomings of the armature current signal DC motor no- load starting was decomposed into a series of product function by LMD. Secondly,the concept of correlation coefficient of adjacent PF was defined and the PF order of the component of the commutation current and the DC component was determined according to the correlation coefficient. Finally,the energy spectrum of commutation current based on LMD was obtained. Simulation and experimental results demonstrate the correctness of the method proposed in this paper.

关 键 词：换向电流 局部均值分解 乘机函数 相关系数 能量谱 

分 类 号：TM33[电气工程—电机]