Practical issues in parallel operation of one-cycle controlled PFC rectifiers

被引：0
|
作者：
Chen, Y [1 ]
Smedley, KM [1 ]
机构：
[1] Univ Calif Irvine, Power Elect Lab, Dept Elect Engn & Comp Sci, Irvine, CA 92697 USA
来源：
CONFERENCE RECORD OF THE 2005 IEEE INDUSTRY APPLICATIONS CONFERENCE, VOLS 1-4 | 2005年
关键词：
Power Factor Correction; parallel; One-Cycle Control; vector operation;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Parallel operation of three-phase power factor corrected (PFC) rectifiers extends the power range to a much higher level and allows modular design. However, some practical issues, such as current sharing and power distribution, circulating currents, and dynamic performance, could be the potential problems. This paper first presents a simple equation for paralleled One-Cycle Controlled (OCC) PFC rectifiers with uneven power ratings. Then an equivalent circuit for circulating current is studied and the validity of OCC parallel method for reducing circulating currents is discussed. At last, an improvement is proposed to the traditional PI compensator to accelerate the transient process when the old master rectifier drops off and a new master establishes due to fault. Two OCC PFC rectifiers were built and experiments have been done for verification.
引用
收藏
页码：153 / 160
页数：8
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