Dual-buck full-bridge grid-connected inverter with common-mode leakage current elimination
Dual-buck full-bridge grid-connected inverter with common-mode leakage current elimination
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DOI：
10.1049/el.2017.3958
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发表时间：
2018-01
影响因子：
1.1
通讯作者：
Yunzhong Dai;Shengxian Zhuang;Wenzhu Li;Luhang Jiang
中科院分区：
文献类型：
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作者：
Yunzhong Dai;Shengxian Zhuang;Wenzhu Li;Luhang Jiang
双降压型全桥并网逆变器（DFGI）以其无直通问题、高效率和高可靠性而著称，但其共模漏电流存在于正半周。针对传统DFGI存在的共模漏电流问题，提出了一种新的DFGI拓扑结构。提出了相应的调制策略。同时，在理论分析的基础上，它可以消除传统DFGI的共模泄漏电流。实验结果证明了理论分析的正确性。
The dual-buck full-bridge grid-connected inverter (DFGI) is well known as its no shoot-through problem, high efficiency and high reliability, but the common-mode leakage current exists in the positive half cycle. To solve the problems of common-mode leakage current of the conventional DFGI, a new DFGI topology is proposed. The corresponding modulation strategy is presented. Meanwhile, on the basis of the theoretical analysis, it can eliminate the common-mode leakage current of conventional DFGI. The experimental results prove the validity of the theoretical analysis.