A family of high power density bus converters

被引：10
|
作者：
Ren, YC [1 ]
Xu, M [1 ]
Leu, CS [1 ]
Lee, FC [1 ]
机构：
[1] Virginia Polytech Inst & State Univ, Ctr Power Elect Syst, Blacksburg, VA 24061 USA
来源：
PESC 04: 2004 IEEE 35TH ANNUAL POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1-6, CONFERENCE PROCEEDINGS | 2004年
关键词：
bus converter; ZVZCS; body diode loss;
D O I：
10.1109/PESC.2004.1355802
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：
This paper begins by reviewing current bus converters and exploring their limitations. Then a family of inductor-less bus converters* is proposed to overcome the limitations. In the new bus converter, magnetizing current is used to achieve zero-voltage-switching (ZVS) turn-on for all witches. The resonant concept is used to achieve zero-current-switching (ZCS) without turn-off loss and body diode loss. Meanwhile, the self-driven method can be easily applied to save drive loss in the synchronous rectifiers. Based on these concepts, a full-bridge bus converter is built in the quarter-brick size to verify the analysis. The experimental results indicate that it can achieve 95% efficiency at 500W, 12V/45A output. Compared with industry products, this topology can dramatically increase the power density.
引用
收藏
页码：527 / 532
页数：6
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