Research on 3N+1 Redundancy Fault-tolerance Strategy of Multilevel Cascaded H-bridge Inverter

WANG Yufeng; ZHANG Ying; LI Shuang; GAO Shan

doi:10.13296/j.1001-1609.hva.2018.02.033

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Research on 3N+1 Redundancy Fault-tolerance Strategy of Multilevel Cascaded H-bridge Inverter

更新时间：2025-04-26

- Research on 3N+1 Redundancy Fault-tolerance Strategy of Multilevel Cascaded H-bridge Inverter
- High VoltageApparatus Vol. 54, Issue 2, Pages: 208-212(2018)
- 作者机构：
  
  1. 辽宁工程技术大学电气与控制工程学院
  2. 国网辽宁省电力有限公司喀左县供电公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.02.033
  CLC： TM464
- Published：2018
- 稿件说明：
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[1]汪玉凤,张影,李爽,高珊.多电平级联H桥逆变器3N+1冗余容错策略的研究[J].高压电器,2018,54(02):208-212.

WANG Yufeng, ZHANG Ying, LI Shuang, et al. Research on 3N+1 Redundancy Fault-tolerance Strategy of Multilevel Cascaded H-bridge Inverter[J]. High voltageapparatus, 2018, 54(2): 208-212.
[1]汪玉凤,张影,李爽,高珊.多电平级联H桥逆变器3N+1冗余容错策略的研究[J].高压电器,2018,54(02):208-212. DOI： 10.13296/j.1001-1609.hva.2018.02.033.

WANG Yufeng, ZHANG Ying, LI Shuang, et al. Research on 3N+1 Redundancy Fault-tolerance Strategy of Multilevel Cascaded H-bridge Inverter[J]. High voltageapparatus, 2018, 54(2): 208-212. DOI： 10.13296/j.1001-1609.hva.2018.02.033.

摘要

为减小IGBT故障对多电平级联H桥（CHB）逆变器运行稳定性的影响

提高级联APF系统的故障容错能力

提出多电平CHB逆变器开路故障检测与3N+1冗余容错策略。该方案在单相故障情况下不改变系统控制策略

降低控制的复杂度

保障逆变器的输出并且保持线电压和负载的对称。该容错拓扑成本低、操作便利

可提高多电平逆变器的可靠性。仿真和实验结果证明该容错方案的合理性和切换的快速性。

Abstract

In order to reduce the influence of IGBT failure of multilevel cascaded H-bridge（CHB）inverter operationstability and improve the APF system fault-tolerance ability

the multilevel CHB inverter open circuit fault detectionand 3 N+1 redundancy fault-tolerance strategy are put forward. The scheme does not change the system control strate-gy in the case of a single phase fault

reduces the complexity of the control

guarantees the output of the inverter andmaintains the symmetry of the line voltage and load. The fault-tolerance topology has low cost and convenient opera-tion

which can improve the reliability of the multilevel inverter.

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