辅助变流器供电系统LLCL滤波器谐波抑制研究  

Harmonic suppression of LLCL filter in auxiliary converter power supply system

作　　者：傅亚林 FU Yalin(Jiangsu Alstom NUG Propulsion System Co.,Ltd.,Changzhou 213166,China)

机构地区：[1]江苏新誉阿尔斯通牵引系统有限公司,江苏常州213166

出　　处：《电力机车与城轨车辆》2023年第4期35-40,共6页Electric Locomotives & Mass Transit Vehicles

摘　　要：针对城轨车辆中大功率非线性交流负载产生大量谐波电流,导致谐波电压超标的问题,文章提出采用LLCL无源滤波器的解决方案,列举了国内外若干谐波发射限值标准的不同要求,并对谐波限值的适应性进行研究。对比分析单相谐波滤波等效电路和传递函数对五种不同滤波器的幅频特性,采用MATLAB/Simulink仿真地铁车辆谐波的真实环境,结果表明:车辆变频空调采用LLCL谐波滤波器方案能够达到接近定频空调(线性负载)的效果。Aiming at the problem that a large number of harmonic currents are generated by high-power nonlinear AC loads in urban rail vehicles,resulting in excessive harmonic voltages,this paper proposes a solution using LLCL passive filters.The diferent requirements of several harmonic emission limit standards at home and abroad are listed,and the adaptability of harmonic limit values is studied.The amplitude-frequency characteristics of single-phase harmonic filter equivalent circuit and transfer function for five diferent filters are compared and analyzed.The MATLAB/Simulink soft is used to simulate the real environment of subway vehicle harmonics.The results show that the LLCL harmonic filter scheme can achieve the efect of approaching the fixed frequency air conditioner( linear load).

关 键 词：辅助变流器 谐波滤波器 谐波电流 非线性负载 

分 类 号：U270.381[机械工程—车辆工程]