Control voltage of DC energy storage unit in universal power quality compensator based on ZVT-PWM

被引：0
|
作者：
Zhu En-guo [1 ]
Wu Guo-liang
Yang Gong-xun [1 ]
机构：
[1] China Univ Min & Technol, Sch Mech Elect & Informat Engn, Beijing 100083, Peoples R China
来源：
2008 THIRD INTERNATIONAL CONFERENCE ON ELECTRIC UTILITY DEREGULATION AND RESTRUCTURING AND POWER TECHNOLOGIES, VOLS 1-6 | 2008年
关键词：
APFC; DC energy storage unit; universal power quality compensator; ZVT-PWM;
D O I：
10.1109/DRPT.2008.4523739
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Supply power for DC energy storage unit by rectifier circuit produced harmonic and decreased power factor. Active power factor correction (APFC) resolved these problems, but this kind of hard switching circuit produced much consumption. It proposed a strategy that using soft switching power transformation technology to control switching devices. An improved scheme based on zero voltage transition (ZVT) PWM converter was presented and corresponding circuit was designed. The dynamic operation courses of circuit and switching states of power devices were researched. The strategy realized zero voltage transition by controlling power devices. Main switching device was conducted and turned off when voltage of resonance network was zero. The results have verified validity and feasibility of the strategy. It can decrease power consumption of switching devices, reduce harmonic, improve power factor and further perfect operation performance of universal power quality compensator.
引用
收藏
页码：2018 / 2022
页数：5
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