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基于高频变压器的背靠背级联H桥型变换器

, PP. 133-138

Keywords: 多电平,级联H桥,载波相移,背靠背,高频变压器

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Abstract:

多电平变换器在高压大容量场合得到了广泛的应用,级联H桥型变换器模块化程度高,扩展性好,在6kV以上场合优势明显。为了实现四象限运行,并省去传统的工频变压器,本文提出一种基于高频变压器的背靠背级联H桥型变换器拓扑,采用多绕组高频变压器代替了多绕组工频变压器,从而显著节省了体积、重量和成本。通过对变换器的协调控制,可以实现能量的双向流动。文中给出的实验结果表明了拓扑的可行性和控制策略的正确性。

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