摘要
针对三相四线制低压供电系统电压波动和非线性谐波电流污染的特点,设计了一种能够解决多种复杂电能质量问题的统一电能质量调节器(UPQC)。该系统采用了模块化设计的思路,采用高频隔离DC/DC代替工频隔离变压器,可实现并联侧谐波电流的精确补偿及串联侧电压跌落、谐波电压的快速补偿特性。此处给出了不同组成部分的控制策略,并通过实验验证了该拓扑结构的可行性和有效性。
Aiming at the characteristics of voltage fluctuation and nonlinear harmonic current pollution in three-phase four-wire low-voltage power supply system,a unified power quality conditioner(UPQC)which can adapt to the coexistence of multiple complex power quality problems is designed.The system adopts modular design and insteads power frequency isolation transformer by high-frequency isolated DC/DC,which can realize accurate compensation of harmonic current at parallel side and rapid compensation of voltage drop and harmonic voltage at series side.The control strategies of different components are given.Feasibility and effectiveness of the structure are proved by experiments.
作者
杨连泽
吴学智
曾国宏
孙瑞东
YANG Lian-ze;WU Xue-zhi;ZENG Guo-hong;SUN Rui-dong(National Active Distribution Network Technology Research Center,Beijing Jiaotong University,Beijing 100044,China)
出处
《电力电子技术》
CSCD
北大核心
2021年第9期78-80,共3页
Power Electronics
基金
中国南方电网有限责任公司科技项目(090000KK52180116)。
关键词
统一电能质量调节器
高频隔离
补偿
unified power quality conditioner
high-frequency isolated
compensation
