利用改进的能量回收缓冲器改进ZVZCS PWM FB DC/DC变换器

APEC 2000. Fifteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.00CH37058) Pub Date : 2000-02-06 DOI:10.1109/APEC.2000.826093

Eun-Soo Kim, K. Joe, Soon-Gu Park, Yoo-Ho Kim

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引用次数: 15

摘要

传统的高频移相全桥DC/DC变换器存在一个缺点，即在任意间隙有循环电流流过变压器和开关器件。由于这种循环电流，增加了变压器和开关器件的有效值电流应力和导通损耗。为了解决这一问题，本文提出了一种无循环型高频软开关移相全桥DC/DC变换器，在变压器二次侧加装改进型能量回收缓冲器(ERS)。本研究采用的改型能量恢复缓冲器由4个快速恢复二极管和2个谐振电容组成。

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An improved ZVZCS PWM FB DC/DC converter using the modified energy recovery snubber

The conventional high frequency phase-shifted full bridge DC/DC converter has a disadvantage that a circulating current flows through transformer and switching devices during the freewheeling interval. Due to this circulating current, RMS current stress, conduction losses of transformer and switching devices are increased. To alleviate that problem, the paper proposes a circulating current free type high frequency soft switching phase-shifted full bridge (FB) DC/DC converter with the modified energy recovery snubber (ERS) attached at the secondary side of transformer. The modified energy recovery snubber (ERS) adopted in this study consists of four fast recovery diodes and two resonant capacitors.

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APEC 2000. Fifteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.00CH37058)

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