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五电平飞跨电容型双降压逆变器

, PP. 83-87

Keywords: 飞跨电容,逆变器,双降压,五电平逆变器

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Abstract:

提出了一种新颖的五电平飞跨电容型双降压逆变器,即在双Buck电路为主电路的基础上构建的飞跨电容钳位型的多电平逆变器。该拓扑保留了双Buck逆变器无桥臂直通、无体二极管反向恢复问题的优点,消除了桥臂直通的隐患和体二极管反向恢复问题。该拓扑结构具备了飞跨电容钳位开关组合方式灵活的优点,其通过逻辑电路对开关模态组合进行调节,解决了飞跨电容的均压问题。在此基础上,对该拓扑进行了saber仿真,并进行了实际试验,得到了仿真及实验波形,验证了分析的正确性和可行性。

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