高速动车组网侧电流谐波特性的研究  

Harmonic Analysis of Power Grid-side for High Speed Train

作　　者：刘玉洁[1] 盛彩飞[1] 林飞[1] 游小杰[1] 郑琼林[1] 

机构地区：[1]北京交通大学电气工程学院,北京100044

出　　处：《电气传动》2010年第1期33-37,50,共6页Electric Drive

基　　金：国家电网公司科技项目资助(SGKJ[2007]102号)

摘　　要：研究了高速动车组注入牵引网电流的谐波特性。分析了两电平及三电平4象限变流器的主电路拓扑及控制策略。利用双边傅立叶级数法,给出了两种4象限变流器网侧电流的谐波公式,总结了谐波分布规律。编制了CRH2和CRH5型动车组4象限变流器的仿真软件,研究了不同牵引和制动功率下,网侧电流的THD及各次谐波电流大小,验证了理论分析的正确性。The characteristics of harmonic currents of four-quadrant converter of AC-DC-AC locomotives and EMUs were researched. The main circuit topology and control strategy of the two-level and three-level four-quadrant converters were studied. Using Double Fourier Series, the grid-side current harmonic formulas were obtained with given grid voltage, DC voltage and active power of the converter. Therefore the distribution characteristics of harmonic currents were analyzed. The simulation software using Matlab was developed for harmonic analysis of CRH5 and CRH2 EMUs. With different traction and braking power, the main harmonic currents of EMUs injecting to the traction grid were studied and compared. It is shown that the harmonic currents determined according to the proposed formula agree well with those results obtained by using the time-domain simulation tool.

关 键 词：4象限变流器 双边傅立叶变换 谐波分析 仿真 

分 类 号：TM461[电气工程—电器]