基于载波脉宽调制技术的牵引整流器谐波特性分析方法  

Harmonic Characteristic Analysis of Carrier Based Pules-Width Modulation Traction Rectifier

作　　者：崔恒斌[1] 冯晓云[1] 张杰[1] 宋文胜[1] 

机构地区：[1]西南交通大学电气工程学院,成都610031

出　　处：《电工技术学报》2013年第9期21-31,共11页Transactions of China Electrotechnical Society

基　　金：国家科技支撑计划(2009BAG12A05);国家自然科学基金(U11344205;51207131;51277153);2013年西南交通大学博士研究生创新基金;中央高校基本科研业务费专项基金资助项目

摘　　要：为研究高速铁路谐波负荷形成的机理及影响因素,基于简化的正弦切割模型,解释了基于载波脉宽调制技术(CBPWM)的工作机理;结合经典双边傅里叶级数与贝塞尔函数,推导出高速列车牵引传动系统CBPWM单相整流器H桥交流电压的谐波频谱计算公式。进一步分析死区对正弦切割模型的影响,建立起考虑死区的统一正弦切割模型。在此基础上,推导出死区附加谐波频谱理论计算公式,量化分析了死区对基波与谐波含量的影响。以某高速列车牵引传动系统为例,分别基于纯数字仿真与硬件半实物实验验证了统一正弦切割模型的精确性与正确性。To study the mechanism and the influencing factors of harmonics from high-speed trains （HSTs）, the mechanism of the carrier based pulse-width modulation （CBPWM） is explained based on the simplified sinusoidal cutting model. And classical bilateral Fourier series and Bessel functions are combined to deduce the harmonic spectrum calculation formula of the H bridge AC voltage of a HST single-phase rectifier. Then the dead-time effect on the sinusoidal cutting model is deeply analyzed. The new unified sinusoidal cutting model considering dead-time effect is established based on it, and then the dead-time additional harmonics calculation formula is deduced. The quantitative analysis of the dead time effects on the harmonic content and its spectrum distribution are performed. In the end, digital simulation and hardware-in-loop （HIL） experimental results of a HST single phase rectifier are shown to verify the accuracy and the correctness of the sinusoidal cutting model.

关 键 词：载波脉宽调制技术 单相整流器 正弦切割模型 死区 附加谐波 

分 类 号：TM922.7[电气工程—电力电子与电力传动]