Solid-State Transformer Architecture Using AC-AC Dual-Active-Bridge Converter
Solid-State Transformer Architecture Using AC-AC Dual-Active-Bridge Converter
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DOI：
10.1109/tie.2012.2204710
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发表时间：
2013-09-01
影响因子：
7.7
通讯作者：
Kimball, Jonathan W.
中科院分区：
文献类型：
--
作者：
Qin, Hengsi;Kimball, Jonathan W.
半导体功率开关器件的现代发展促进了电力电子转换器作为配电级的电力变压器的使用。本文提出了一种用于固态Transformer的交-交双有源桥变换器。该变换器拓扑结构由两个有源H桥和一个高频Transformer组成。四象限开关单元用于允许双向功率流。由于功率是由两个电桥之间的相移控制的，所以当输入电压变化时，输出电压可以被调节。分析了开关管的稳态工作特性和零电压开关范围。提出了一种适用于交-交DAB变换器的开关换流方案。实验结果从一个缩小的原型提供验证理论分析。
Modern development of semiconductor power-switching devices has promoted the use of power electronic converters as power transformers at the distribution level. This paper presents an ac-ac dual-active-bridge (DAB) converter for a solid-state transformer. The proposed converter topology consists of two active H-bridges and one high-frequency transformer. Four-quadrant switch cells are used to allow bidirectional power flow. Because power is controlled by the phase shift between two bridges, output voltage can be regulated when input voltage changes. This paper analyzes the steady-state operation and the range of zero-voltage switching. It develops a switch commutation scheme for the ac-ac DAB converters. Experimental results from a scaled-down prototype are provided to verify the theoretical analysis.