基于载波移相控制的ASVG的研究  

Study of ASVG Based on Carrier Phase-shift Control

作　　者：陈雷[1] 唐轶[1] 肖靓 

机构地区：[1]中国矿业大学信电学院,江苏徐州221008 [2]佛山电力设计院有限公司,广东佛山528200

出　　处：《电力电容器与无功补偿》2012年第1期51-56,共6页Power Capacitor & Reactive Power Compensation

摘　　要：无功补偿装置与电网的安全稳定运行关系密切,研究无功补偿问题对电力系统意义重大。文章对ASVG变流器的主回路拓扑结构及其工作原理进行了简要阐述,提出采用多组桥并联结构的载波移相控制方法并搭出十二桥模型,对比了其和传统的变流器结构及其对应的PWM工作方式,用开关模型法计算了直流侧纹波、输出电流纹波的值,最后用MATLAB仿真软件验证之。The var compensation device is closely related to safe and stable operation of power grid, so, the research of var compensation has great significance to power system. In this paper, the topology structure and working principal of main circuit for ASVG inverter are briefly described. The method of carrier phase-shift control with adoption of multi-bridge parallel structure is put forward and a 12-bridges model is made. The comparison with the traditional converter structure and its corresponding PWM working mode have been carried out, and the DC side ripples, output current ripple are calculated by switch model. At last, it is validated by the use of MATLAB simulation software, which reflect the advantage of the new method.

关 键 词：电力系统 静止无功发生器(ASVG) 载波移相 纹波 

分 类 号：TM761.1[电气工程—电力系统及自动化]