摘要
为了研究高速动车组注入电网电流谐波特性,根据CRH5型高速动车组工作原理,建立PWM整流器主电路及网侧电流谐波数学模型,利用双边FFT变换方法和Bessel函数,给出了谐波的分布规律。通过MATLAB/Simulink建立网侧变流器仿真模型,并基于瞬态直接电流控制策略,结合多重化载波移相技术,仿真实际运行参数,研究其在不同工况下网侧电流的谐波特性,得到了网侧谐波分布随网压的变化规律。
In order to study the current harmonic characteristics of high speed MU injected into the grid,a digital model of PWM rectifier ’ s main circuit and grid side current harmonic is established according to the working principles of CRH5 high speed MU. The distribution of harmonics is given by using bilateral FFT transform and Bessel function. The simulation model of the network side converter is established by MATLAB/Simulink, and based on the transient direct current control strategy,combined with the multi-carrier phase shift technology, the actual operating parameters are simulated, and the harmonic characteristics of the network side current under different working conditions are studied,and the variation law of the network side harmonic distribution with the grid voltage is obtained.
作者
周诗林
彭飞
伊建辉
李新康
齐浩然
ZHOU Shilin;PENG Fei;YI Jianhui;LI Xinkang;QI Haoran(CRRC Industrial Research Institute(Qingdao)Co.,Ltd.,Qingdao 266109,China)
出处
《铁道机车与动车》
2021年第S02期6-10,I0001,共6页
Railway Locomotive and Motor Car
关键词
动车组
谐波
仿真
网侧电流
MU
harmonic
simulation
network side current
