带保持时间补偿的效率优化非对称半桥变换器

Jung-Kyu Han, Jong-Woo Kim, Yujin Jang, Byunggu Kang, Jaewon Choi, G. Moon
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引用次数: 2

摘要

本文提出了一种集成保持时间补偿电路的新型非对称半桥变换器。由于所有开关的零电压开关(ZVS)和少量元件,AHB变换器是中低压应用中最有前途的拓扑之一。但在考虑保持时间条件下设计变换器时,变压器偏置电流大,变压器匝比小。尽管许多研究人员已经研究解决这个问题,但传统工程的优势受到额外组件损失的限制。为了解决这一问题,本文提出了一种效率优化的新型AHB变换器。由于所提出的转换器在保持时间内使用集成升压转换器增加电压增益,因此可以将其设计为在标称状态下获得最佳效率,而不会产生额外组件的损耗。
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Efficiency optimized asymmetric half-bridge converter with hold-up time compensation
In this paper, a new asymmetric half-bridge (AHB) converter integrated with hold-up time compensation circuit is proposed. The AHB converter is one of the most promising topologies in low-to-mid power applications because of zero-voltage switching (ZVS) of all switches and small number of components. But when the converter is designed considering the hold-up time condition, it has large transformer offset-current and small transformer turns-ratio. Although many researchers have studied to solve this problem, the advantages of conventional works are limited by losses from additional components. To solve this problem, a new AHB converter with an optimized efficiency is proposed in this paper. Since the proposed converter increases voltage gain using integrated boost converter during the hold-up time, it can be designed to obtain an optimized efficiency in nominal state, without losses from the additional components.
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