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首页> 外文期刊>Power Electronics, IET >Single and multiple switch fault-tolerance capabilities in a hybrid five-level inverter topology
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Single and multiple switch fault-tolerance capabilities in a hybrid five-level inverter topology

机译：混合5级逆变器拓扑中的单一和多个开关容错能力

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摘要

The redundancy in switching states to generate different voltage levels is of great importance to incorporate fault-tolerant features in multilevel inverters. However, this redundancy comes at the expense of high device count, which is paralleled with vulnerable characteristics of semiconductor devices, resulting in low reliability. About this concern, the present study introduces a novel fault-tolerant topology to generate the five-level output voltage. The proposed topology can tolerate open-circuit failure, for single and multiple switches with the help of novel redundant leg architecture and short-circuit condition is dealt with the fast fuses. The comparative study with recent literature is discussed, which reveals the superiority of the proposed topology, in terms of qualitative as well as quantitative parameters. Switching strategies are proposed under different single and multiple switch fault cases, which achieves self-balancing of capacitor voltage. Thus, no complex control scheme is required. The simulation is performed in MATLAB/Simulink, and the feasibility of the proposed topology is validated using experimental results.
机译：切换状态下产生不同电压电平的冗余非常重要，可以在多级逆变器中结合容错功能。但是，这种冗余以牺牲高设备计数为代价，这与半导体器件的易受攻击特性平行，导致可靠性低。关于此问题，本研究介绍了一种新颖的容错拓扑，以产生五级输出电压。该拓扑结构可以容忍开路故障，对于单个和多个开关，在新颖的冗余腿架构的帮助下，短路条件是用快速保险丝处理的。讨论了最近文献的比较研究，揭示了所提出的拓扑的优越性，就定性以及定量参数而言。在不同的单一和多个开关故障情况下提出了切换策略，实现了电容器电压的自平衡。因此，不需要复杂的控制方案。在MATLAB / SIMULINK中执行模拟，使用实验结果验证所提出的拓扑的可行性。

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