A reliable and efficient modified T-type fault tolerant five level inverter configuration,International Transactions on Electrical Energy Systems

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A reliable and efficient modified T-type fault tolerant five level inverter configuration
International Transactions on Electrical Energy Systems ( IF 1.9 ) Pub Date : 2021-06-21 , DOI: 10.1002/2050-7038.12975
Sai Krishna Saketi ₁ , Pradyumn Chaturvedi ₁ , Dharmendra Yadeo ₁ , Dipesh Atkar ₁

Affiliation

This paper presents a new fault-tolerant multilevel inverter (FTMLI) configuration, which can withstand both the single-switch and multi-switch faults by maintaining rated voltage and power. A new control algorithm is developed to compensate the switch fault, with the generation of appropriate control signals to the corresponding switches. Sine-carrier level-shifted pulse width modulation is used to generate control signals to the switches. The detailed loss analysis for all the switches is performed by considering variations in the junction temperature. It helps in the efficient design of heat sinks for the switches. The comparative analysis is performed for the proposed topology with existing topologies in terms of reliability, efficiency, and mean time to failure. The proposed topology is simulated in MATLAB/Simulink platform and these results are validated through a laboratory prototype. The performance of the proposed FTMLI topology is found satisfactory.

中文翻译：

一种可靠高效的改进型T型容错五电平逆变器配置

本文提出了一种新的容错多电平逆变器 (FTMLI) 配置，它可以通过保持额定电压和功率来承受单开关和多开关故障。开发了一种新的控制算法来补偿开关故障，并为相应的开关生成适当的控制信号。正弦载波电平偏移脉宽调制用于生成控制信号到开关。所有开关的详细损耗分析是通过考虑结温的变化来执行的。它有助于开关散热器的高效设计。在可靠性、效率和平均故障时间方面，对提议的拓扑与现有拓扑进行了比较分析。提议的拓扑结构在 MATLAB/Simulink 平台上进行了仿真，这些结果通过实验室原型进行了验证。发现所提出的 FTMLI 拓扑的性能令人满意。

更新日期：2021-08-07

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