单相三电平脉冲整流器网侧谐波特性研究  

Harmonic characteristic analysis of single-phase three level PWM rectifiers

作　　者：宋文胜[1] 崔凯[1] 陈春阳[1] 周伟[1] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《电机与控制学报》2013年第12期39-45,共7页Electric Machines and Control

基　　金：国家自然科学基金重点项目(U1134205);中央高校基本科研业务费专项资金(SWJTU12CX025)

摘　　要：针对高速列车对牵引网注入谐波产生谐振问题,给出一种定量分析网侧谐波特性及分布的计算方法。以我国高速铁路领域中广泛应用的单相脉冲整流器为研究对象,利用3D几何墙模型SPWM的原理,通过双重傅里叶级数和贝塞尔函数推导出单相两电平整流器网侧电压谐波公式,在此基础上,根据二重化的两电平与三电平整流器之间SPWM调制的等效性,揭示了单相三电平整流器网侧谐波产生机理及定量分布情况。对该计算方法开展了时域仿真算例与小功率实物平台的实验对比研究,仿真与实验结果均验证了该方法的有效性和精确性。此方法可以精确计算整流器各次谐波含量,对谐波谐振的产生机理揭示及谐振抑制具有一定的指导意义。In order to solve the harmonics resonance problems of traction network caused by high-speed locomotive, a quantitative analysis method for calculating the harmonic characteristic and its distribution is proposed. For single-phase pulse converter which is widely used in China high speed railway, a three- dimensional geometrical wall model method was designed to generate sinusoidal pulse width modulation （SPWM） , and mathematic expression of the AC input voltage harmonics of two-level converter was de- rived by the double Fourier series and Bessel function. Then, the equivalent relationship of two interlaced two-level converters and one three-level converter was discussed. On the basis of this, the harmonics characteristic of AC input voltage of three-level converter was analyzed in detail, and harmonic generation mechanism and quantitative distribution were derived. The adopted calculation algorithm was tested and compared in computer simulation and hardware experiment, respectively. The simulation and experimen- tal results verify the validity and accuracy of the adopted algorithm. This method accurately calculates ev- ery harmonic content of rectifier and is a guide for exploring the generation mechanism of harmonic reso- nance as well as its suppression.

关 键 词：三电平整流器 谐波分析 3D几何墙模型 双重傅里叶级数 

分 类 号：TM143[电气工程—电工理论与新技术]