文档介绍：电力电子技术
第 43 卷第 4 期
2009 年 4 月 Power Electronics April,2009
整流器谐波特性分析
PWM
葛兴来冯晓云刘柏思
, ,
西南交通大学四川成都
( , 610031)
摘要采用定量数学分析方法详细推导出单相两电平脉冲整流器的输入侧电压谐波特性整流器的控制采用自然采
: ;
样双边正弦脉宽调制给出用几何墙模型生成的方法通过用双重傅里叶级数形式表示脉冲整
(SPWM), 3D SPWM 。
流器输入侧的电压波形计算得出单个整流器的谐波特性总结了各次谐波生成和消除的规律为了防止同一
PWM , , 。
桥臂上下直通需要加入死区时间这又将加重谐波的影响用软件对上述理论分析计算模型的精
, , 。 Matlab/Simulink
确性进行了仿真验证基于的实验结果也表明了分析的合理性
, TMS320F2812 。
关键词整流器脉宽调制谐波分析几何墙模型双重傅里叶级数
: ; / ; ;
中图分类号文献标识码文章编号
:TM461 :A :1000-100X(2009)04-0067-03
Analytical Solution to Harmonic Characteristics of PWM Converter
GE Xing-lai, FENG Xiao-yun, LIU Bai-si
(Southwest Jiaotong University, Chengdu 610031, China)
Abstract:An analytical technique is researched theoretically,which can calculate the AC input voltage harmonic spectra
of single-phase PWM conveter used in railway double edge modulated naturally sampled SPWM is assumed.
The technique bases on a three-dimensional geomitrical wall model and the double Fourier series of PWM
converter bridge are analysis predicts plete harmonic generation and cancellation process of certain
characteristic harmonics and their harmonic characteristics considered the effects of dead time are obtaind
accuracy of this technique is confirmed paring the results with simulations using Marlab/Simulink a