ABSTRACT An interleaved frequency control soft switching converter is studied for solar power or fuel cell power applications. The proposed circuit topology contains two parallel current-fed circuit cells with interleaved pulse-width modulation operation. Thus, the ripple currents at input and output terminals are decreased. In each circuit cell, the proposed current-fed dc-dc converter includes boost circuit and resonant circuit to achieve current ripple-free on low voltage side and less switching losses on active devices. The boost circuit and the resonant circuit have same active devices to decrease power switches. Due to the resonant behaviour, the reverse recovery current loss on secondary diodes is removed. The voltage doubler circuit topology is accomplished on secondary-side to reduce diode counts and conduction loss. The performance and effectiveness of the developed interleaved PWM current-fed converter are verified and confirmed by experiments.

中文翻译：

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具有小输入纹波电流的交错软开关谐振转换器

摘要 研究了一种用于太阳能或燃料电池电源应用的交错频率控制软开关转换器。建议的电路拓扑包含两个并行的电流馈电电路单元，具有交错的脉宽调制操作。因此，输入和输出端的纹波电流减小。在每个电路单元中，建议的电流馈电 DC-DC 转换器包括升压电路和谐振电路，以实现低压侧无电流纹波和有源器件的开关损耗更少。升压电路和谐振电路具有相同的有源器件以减少功率开关。由于谐振行为，次级二极管上的反向恢复电流损耗被消除。倍压器电路拓扑在次级侧完成，以减少二极管数量和传导损耗。