A multi-level topology is one of the effective approaches to improve the efficiency of power converters. The authors had developed and already presented a 50-kVA UPS using Ad-vanced Neutral-Point–Clamped (A-NPC) topology,which utili es Reverse-Blocking IGBT (RB-IGBT) as a bi-directional switch for clamping of its AC output to the DC neutral point. The A-NPC topology is simple and enables low conduction losses of the converters. This time, the authors develop a 1-MVA solar power inverters using A-NPC topology.In this paper, the power unit and control of the solar power inverters using A-NPC IGBT modules con-nected in parallel and the evaluation results are presented.
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机译：多级拓扑是提高功率转换器效率的有效方法之一。作者已经开发出了50 kVA UPS，使用Ad-Vanced中性点钳位（A-NPC）拓扑，该拓扑利用了反向阻断IGBT（RB-IGBT）作为双向开关，用于夹紧其交流输出到DC中性点。 A-NPC拓扑结构简单，可实现转换器的低导电损耗。这次，作者使用A-NPC拓扑开发1-MVA太阳能逆变器。在本文中，呈现了使用A-NPC IGBT模块并行连接的A-NPC IGBT模块的功率单元和控制结果。
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