动态电压恢复器并联系统及其控制策略研究
李锦，陈远华，胡磊磊，王天宇
（思源清能电气电子有限公司，上海201108）
摘要： 提出了一种动态电压恢复器（DVR）的主从并联系统架构及补偿主机和从机的控制策略。系统架构由开关部
分、补偿主机部分、补偿从机部分组成，补偿主机采用三相电压的正序负序幅值来判断电压跌落，在补偿状态下，补偿
主机被控制为一个受控电压源，从机被控制为一个受控电流源，实现补偿主机和补偿从机之间的均流运行。仿真结论验
证了提出的并联架构及其控制策略。
关键词： 动态电压恢复器；主从控制；跌落检测；闭环控制调节器
中图分类号： TM761 文献标识码： A 文章编号： 2095-0802-(2016)04-0002-03
Research on Parallel System and Control Strategy of Dynamic Voltage Restorer
LI Jin, CHEN Yuanhua, HU Leilei, WANG Tianyu
(Siyuan Qingneng Electrical and Electronics Co., Ltd., Shanghai 201108, China)
Abstract: This paper proposes a master-slaver parallel system of dynamic voltage restorer (DVR). The proposed parallel system
consists of switch subsystem, master compensation subsystem and slaver compensation subsystem. The master compensation
subsystem is in charge of grid voltage sag detection and coordination control of the other subsystems so as to achieve the seamless
transfer between different operation modes like standby mode, compensation mode and stop mode. In the standby mode, the master
compensation subsystem senses three phase voltages and calculates the positive and negative sequence components to detect the
voltage sag event. In the compensation mode, the master compensation subsystem is controlled as a voltage-controlled voltage source
and the slaver compensation subsystem is controlled as a current-controlled current source to achieve the current sharing between
the master and slaver. Simulation results verified the operation principle of proposed parallel system and the control strategy.

 Key words: dynamic voltage restorer; master-slaver control; voltage sag detection; close-loop control regulator