基于空间电压矢量的PWM整流器谐波特性分析  

Harmonic Analysis of PWM Rectifier Based on Space Voltage Vector

作　　者：卜文绍[1] 汪显博[1] 翟利利[1] 

机构地区：[1]河南科技大学电子信息工程学院,河南洛阳471003

出　　处：《电测与仪表》2011年第8期23-27,32,共6页Electrical Measurement & Instrumentation

基　　金：河南省教育厅自然科学基金资助项目(2010B510011);河南科技大学科研基金项目(2003ZY27)

摘　　要：为定量分析PWM整流器的谐波特点,在脉宽调制规律和PWM整流器数学模型分析的基础上,首先通过傅里叶变换得到了网侧电压、电流的谐波解析式,然后分析出了PWM整流器的网侧电压、网侧电流在系统不同参数设置下的谐波特性,并给出了各次谐波的幅值及含量随调制参数改变而变化的规律。本文还通过仿真手段对谐波计算方法进行了验证分析,给出了不同电感值条件下的网侧电流谐波频谱,仿真分析结果验证了该计算方法的有效性。To analyze the harmonic characteristics of PWM rectifier quantificationally,on the basis of analyzing the principle of math model of PWM rectifier,the analytical expressions of harmonics voltage and current on power network side are given by Fourier analysis firstly.Then,Harmonic characteristics of voltage and current on power network side are analyzed with different parameters,and the mutative principle of amplitude and content of each harmonic with the variation of modulation parameters are presented also.The presented harmonic calculation method is verified by simulation,and harmonic spectrums of current on power network side with different inductance values are presented.Simulation results have verified the validity of the presented algorithm.

关 键 词：PWM整流器 谐波特性 脉宽调制 仿真 

分 类 号：TM461[电气工程—电器]