Extended Soft-switching Operation of the Dual Interleaved Boost Converter
Extended Soft-switching Operation of the Dual Interleaved Boost Converter
复制标题
双交错升压转换器的扩展软开关操作
DOI：
10.1049/cp.2016.0136
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Ahmed M
中科院分区：
文献类型：
--
作者：
Ahmed M
软开关技术、交错拓扑和碳化硅（SiC）MOSFET的使用可以提高电动汽车和飞机应用中大功率高压DC-DC转换器的效率和功率密度。为了扩展缓冲器辅助零电压零电流转换（SAZZ）双交错升压变换器的工作范围，使其超过D=0.5的固有软开关极限，提出了一种谐振脉冲Transformer来代替谐振电感，以实现全占空比范围内的软开关。Transformer的2：1匝数比确保缓冲电容器在所有占空比值下完全放电，以便于在主开关器件接通时实现零电压零电流开关（ZVZCS）。该拓扑的有效性已被证实的SPICE仿真和证明了多千瓦的SiC MOSFET的SAZZ变换器。
The use of soft-switching techniques, interleaved topologies and silicon carbide (SiC) MOSFETs can improve the efficiency and power-density of high-power, high-voltage DC-DC converters for electric vehicle and aircraft applications. In this paper, to extend the operating range of the Snubber Assisted Zero Voltage and Zero Current Transition (SAZZ) dual-interleaved boost converter beyond its inherent soft-switching limit of D=0.5, a resonant pulse transformer is proposed instead of the resonant inductor to enable soft-switching over the full duty ratio range. The 2:1 turns ratio of the transformer ensures full discharge of the snubber capacitor at all duty ratio values to facilitate zero voltage zero current switching (ZVZCS) at turn on of the main switching devices. The effectiveness of the topology has been confirmed by SPICE simulation and demonstrated by a multi-kW SiC MOSFET based SAZZ converter.