铁路电力贯通线高速瞬时无功补偿研究

Railway power transmission line of high speed instantaneous wattless power compensation

文章介绍了单周期控制的基本原理,分析了单周期控制下的三相变流器工作原理,建了三相变流器的数学模型,推导出了其等效控制方程,在此基础上建立了单周期控制三相变流器无功补偿模型,通过直流电压外环控制和电感电流斜坡调制,实现了对电力贯通线容性电流的瞬时补偿,提高了铁路电能质量。

This paper introduces the basic principle of one cycle control,analysis of the three phase converter working principle of one cycle control,built the mathematical model of three-phase inverter,deduces the equivalent control equation,is established based on the one cycle control of three-phase converter wattless compensation model,a DC voltage outer loop control and inductance current ramp modulation,the instantaneous compensation of capacitive current of power transmission line,the railway to improve power quality.