This paper presents a family of zero voltage transition (ZVT) interleaved dc-dc converters. Soft switching operation for all power semiconductor devices in the proposed topologies is achieved by using one auxiliary circuit with only one auxiliary switch. Therefore, the proposed converters have a simple structure with low size and cost. The proposed converters can achieve zero voltage soft switching operation for the main switches and zero current soft switching operation for the auxiliary switch. In addition, the reverse-recovery problem of the diodes is alleviated. Therefore, the losses associated with semiconductor components are reduced and efficiency is improved considerably. Besides, no extra voltage and current stresses are imposed on the main switches in comparison with hard switching counterparts. Operation principles and design considerations of an interleaved boost converter with the ZVT auxiliary circuit are discussed in detail. A prototype of this converter is implemented and tested to validate the theoretical analysis and converter operation.

中文翻译：

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元件数量较少的 ZVT 交错式转换器系列


本文介绍了一系列零电压转换 (ZVT) 交错式 DC-DC 转换器。所提出的拓扑中所有功率半导体器件的软开关操作是通过使用仅具有一个辅助开关的一个辅助电路来实现的。因此，所提出的转换器结构简单、尺寸小、成本低。所提出的变换器可以实现主开关的零电压软开关操作和辅助开关的零电流软开关操作。此外，二极管的反向恢复问题也得到缓解。因此，与半导体元件相关的损耗减少，效率显着提高。此外，与硬开关相比，不会对主开关施加额外的电压和电流应力。详细讨论了带有 ZVT 辅助电路的交错式升压转换器的工作原理和设计注意事项。实施并测试了该转换器的原型，以验证理论分析和转换器操作。