大功率升压变换器的新型有源缓冲器

APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285) Pub Date : 1999-03-14 DOI:10.1109/APEC.1999.749752

M. Jovanovic, Y. Jang

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引用次数: 64

摘要

提出了一种通过减少升压开关和整流器的反向恢复相关损耗来提高升压变换器性能的技术，该技术采用最小数量的元件实现了有源缓冲器。这种最小分量计数缓冲器由缓冲器电感、辅助开关和整流器组成。该技术通过与升压开关和整流器串联的缓冲器电感来控制整流电流的关断di/dt率，从而降低了与反向恢复相关的损耗。所提出的有源缓冲升压变换器中元件的电压和电流应力与传统的“硬开关”对应物相似。

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A novel active snubber for high-power boost converters

A technique which improves the performance of the boost converter by reducing the reverse-recovery-related losses in the boost switch and rectifier with an active snubber that is implemented with a minimum number of components is presented. This minimum-component count snubber consists of a snubber inductor, an auxiliary switch, and a rectifier. The proposed technique reduces the reverse-recovery-related losses by controlling the turn-off di/dt rate of the rectifier current with the snubber inductor connected in series with the boost switch and rectifier. The voltage and current stresses of the components in the proposed active-snubber boost converter are similar to those in its conventional "hard-switched" counterpart.

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APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285)

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