A novel bidirectional dc–dc converter having high voltage gain capability with high efficiency is proposed in this paper for interfacing storage in a range of applications. The proposed converter steps up (boost) the voltage in one direction while stepping it down (buck) in the other direction of operation. An attractive feature of the proposed converter is the symmetry of its operating modes. It also has inherent soft-switching capability during turn on of the switches, enabling high switching frequency operation. This, coupled with the fact that the proposed converter uses only one coupled inductor for both boost and buck modes, leads to a compact system. A clamped capacitor network is used to recover the leakage energy. Circuit description, design, and loss calculations for both buck and boost modes are explained. The bidirectional converter is designed for a voltage gain of 10 and (1/10) in the boost and buck modes, respectively. A 500 W laboratory prototype of the proposed converter has been developed and tested under rated conditions. Even for a large voltage gain of 10, a peak efficiency in excess of 94% is achieved, which is not possible with conventional converters. All the results of this work are included.

中文翻译：

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一种用于存储接口的新型高电压增益、高效率双向 DC-DC 转换器的设计与开发

本文提出了一种具有高电压增益能力和高效率的新型双向 dc-dc 转换器，用于在一系列应用中连接存储。建议的转换器在一个方向上升高（升压）电压，同时在另一个操作方向上降低（降压）电压。所提出的转换器的一个吸引人的特点是其工作模式的对称性。它还具有在开关开启期间固有的软开关能力，从而实现高开关频率操作。这一点，再加上所提出的转换器仅使用一个耦合电感器用于升压和降压模式这一事实，形成了一个紧凑的系统。钳位电容器网络用于恢复泄漏能量。解释了降压和升压模式的电路描述、设计和损耗计算。双向转换器设计用于升压和降压模式下的电压增益分别为 10 和 (1/10)。已开发并在额定条件下测试了所提议转换器的 500 W 实验室原型。即使对于 10 的大电压增益，也可以实现超过 94% 的峰值效率，这是传统转换器无法实现的。这项工作的所有结果都包括在内。