Soft-Switching Solid-State Transformer (S4T)
Soft-Switching Solid-State Transformer (S4T)
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DOI：
10.1109/tpel.2017.2707581
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发表时间：
2018-04
影响因子：
6.7
通讯作者：
Hao Chen;D. Divan
中科院分区：
文献类型：
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作者：
Hao Chen;D. Divan
提出了一种全双向软开关固态变压器（S4T）的新拓扑结构。最小的拓扑结构，具有12个主设备和一个高频变压器，不使用中间直流电压链路，并提供正弦输入和输出电压。S4T可配置为与双端或多端直流、单相或多相交流系统接口。辅助谐振电路为主设备从空载到满载创造零电压开关条件，并有助于管理与电路寄生元件的相互作用。模块化的结构允许串联和/或并联堆叠转换器电池的高压和大功率应用。
This paper presents a new topology for a fully bidirectional soft-switching solid-state transformer (S4T). The minimal topology, featuring 12 main devices and a high-frequency transformer, does not use an intermediate dc voltage link, and provides sinusoidal input and output voltages. The S4T can be configured to interface with two- or multiterminal dc, single- or multiphase ac systems. An auxiliary resonant circuit creates zero-voltage-switching conditions for main devices from no-load to full-load, and helps manage interactions with circuit parasitic elements. The modularized structure allows series and/or parallel stacking of converter cells for high-voltage and high-power applications.