基于SHE-PWM的车网耦合谐振主动抑制策略研究  

Active Resonance Suppression Strategy for Grid-Train Coupling Resonance Based on SHE-PWM

作　　者：张润泽[1] 林飞[1] 杨中平[1] 曹虎 刘玉萍 Zhang Runze;Lin Fei;Yang Zhongping;Cao Hu;Liu Yuping(School of Electrical Engineering Beijing Jiaotong University Beijing,100089,China;CRRC Qingdao Sifang Rolling Stock Reseaarch Institute Co.Ltd Qingdao,266000,China)

机构地区：[1]北京交通大学电气工程学院,北京100089 [2]中车青岛四方车辆研究所有限公司,青岛266000

出　　处：《电工技术学报》2018年第A01期129-138,共10页Transactions of China Electrotechnical Society

基　　金：国家重点科研项目资助(2016YFB1200506-18)

摘　　要：中国高速铁路交直交机车采用脉宽调制(PWM)技术,该技术造成谐波分布较为广泛,可能导致车网谐振现象,影响牵引供电系统的正常工作,该文针对车网谐振现象进行了研究并提出了可行的谐振抑制策略。首先分析了谐振机理,进一步引入特定谐波消除技术(SHE-PWM),消除注入牵引网的固有谐振频率的谐波来抑制谐振。由于多开关角的SHE-PWM构成的多元超越方程求解困难,采用有效集二次寻优的方式,进行超越方程求解。该算法具有初值依赖度低,收敛速度快,求解精度高的优势。最终通过RT-lab硬件在环实验分析验证了该谐振抑制算法的可行性以及方程算法的准确性。Pulse width modulation(PWM)technology is widely used in High-Speed Railway.The harmonic distribution caused by PWM is extensive,it increases the possibility of the grid-train coupling resonance in the traction power supply system(TPSS)and it may affect the normal operation of the TPSS.In this paper,the mechanism of grid-train coupling resonance was studied and a feasible strategy of resonance suppression was proposed.This paper analysed the mechanism of resonance firstly and adopted specific harmonic elimination-pulse width modulation(SHE-PWM)technology to eliminate the harmonic in the resonant frequency,it could suppress the grid-train coupling resonance.Since the solution process of SHE-PWM with multiple switching angles contains complex transcendental equations,and it was difficult to solve by using ordinary iterative algorithm.In this paper,it used the active-set secondary optimization method to solve the equation.The algorithm has the benefit of low dependence on initial values and high solution accuracy.Finally,the feasibility of the resonant suppression algorithm was verified by RT-lab hardware-in-loop(HIL)experiment.

关 键 词：高速铁路 脉宽调制 车网耦合谐振抑制 特定谐波消除 有效集 

分 类 号：TM921.2[电气工程—电力电子与电力传动] TM922.31