摘要
由于传统的统一电能质量调节器(UPQC)无法实现系统电源电压深度跌落和短时中断的补偿功能,文章提出一种新型UPQC,它加入了双向晶闸管、超级电容储能和双向DC-DC变换器模块,并在传统UPQC基础上去掉了串联逆变器,增加了系统电源电压深度跌落和短时中断的电压补偿功能。基于该拓扑结构,提出了一种快速关断晶闸管的方案,可以实现启动电压补偿的无缝切换。此外,该UPQC还具备有源滤波、无功补偿和三相不平衡补偿功能。仿真和实验结果证实该方案可较全面、有效地解决电能质量问题。
The traditional UPQC（unified power quality conditioner） cannot realize voltage compensation when the system＇s power voltage deeply drops or interrupts in a short time. A new type of UPQC was proposed, which was added bidirectional thyristor, ultra energy storage and bidirectional DC-DC converter modules, removed the series inverter of traditional UPQC, namely increasing the voltage compensation function. A fast turn-off scheme for thyristor was proposed based on the UPQC to realize seamless switching when starting voltage compensation. The UPQC also possesses active power filter and reactive power compensation and three-phase unbalance power compensation. The simulative and experimental results confirm that the scheme can effectively and comprehensively solve the problems of power quality.
出处
《大功率变流技术》
2015年第4期35-38,共4页
HIGH POWER CONVERTER TECHNOLOGY
关键词
统一电能质量调节器
双向晶闸管
超级电容器
UPQC（unified power quality conditioner）
bidirectional thyristor
ultra capacitor
