CBPWM牵引整流器谐波特性分析方法研究.pdfVIP

CBPWM 牵引整流器谐波特性分析方法研究 崔恒斌 冯晓云 张杰 宋文胜 （西南交通大学电气工程学院成都 四川 610031 ） 摘要 本文针对高速列车电力牵引交流传动系统中的单相整流器，基于简化的正弦切割模型， 解释了 CBPWM 的调制机理，并结合经典双边傅里叶级数与贝塞尔函数，推导出单相整流器输入 电压的理想谐波计算公式。深入分析死区对正弦切割模型的影响，建立起考虑死区的正弦切割模 型，并推导出死区附加谐波计算公式，定量分析死区对谐波的影响。以某高速列车牵引传动系统 单相整流器为例，分别基于纯数字仿真与半实物实验验证本文理论分析的正确性。 关键词： CBPWM 单相整流器 正弦切割模型 死区 附加谐波 中图分类号：TM922.7 Research of Harmonic Characteristics Analyze Methods of CBPWM Traction Converter Cui Hengbin, Feng Xiaoyun, Zhang Jie, Song Wensheng (Electrical Engineering School of Southwest Jiaotong University, Chengdu, China, 610031) Abstract This paper presents the CBPWM modulation mechanism based on the simplified sinusoidal cutting model, taking a single phase rectifier of a high-speed train traction system as the research object. Classical bilateral Fourier series and Bessel function are combined to deduce the idea harmonic calculation formula of the single phase rectifier input voltage. Based on the above, the dead time effect on the sinusoidal cutting model is deeply analyzed. So the new sinusoidal cutting model considering dead time effect is deduced, the dead time additional harmonic calculation formula is deduced and the quantitative analysis for the effects of the dead time on harmonics is performed. In the end, digital simulation and hardware-in-loop experiment results of a high-speed train single phase rectifier are shown to verify the theoretical correctness of this paper. Keywords ：CBPWM, single phase rectifier, sinusoidal cutting model, dead time, additional harmonics 1 引言1 尽管已有众多文献对变流器谐波频谱进行 分析，然而仅有部分文献专门针对单相整流器展 高速列车电力牵引交流传动系统中的单相 开研究。因此，定量分析牵引传动系统中单相整