Integrated fault diagnosis and recovery in NPC multi-level inverters

Chen, Weiqiang; Hotchkiss, Ethan; Mademlis, Christos; Bazzi, Ali M.

doi:10.1109/demped.2017.8062388

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…For example, diagnosis methods that have been explored by the authors and which complement this work are shown in [38]. Therefore, the shorted condition of any switch can be considered a passthrough since switches can be paired to tolerate the short circuit condition, and the short circuit path to the source is eliminated by the back-toback switches.…”

Section: A Proposed Methodsmentioning

confidence: 95%

Reconfiguration of NPC Multilevel Inverters to Mitigate Short Circuit Faults Using Back-to-Back Switches

2018

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Section: A Proposed Methodsmentioning

confidence: 95%

Reconfiguration of NPC Multilevel Inverters to Mitigate Short Circuit Faults Using Back-to-Back Switches

2018

Self Cite

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“…The faulty phase leg isolation method [34] will operate only with two phases under faulty conditions, which results in unbalanced per phase conditions and a reduced peak value. The method of isolating a faulty device using fuses [35] has the drawback of requiring additional components in addition to a complex control strategy and the extra stress placed on the remaining healthy devices. In the method of isolating a faulty cell [36], healthy devices undergoing reconfiguration conditions will experience a higher voltage stress.…”

Section: Case C: Performance During Gsc Fault and Fault Reconfigurati...mentioning

confidence: 99%

Wavelet Transform Based Fault Identification and Reconfiguration for a Reduced Switch Multilevel Inverter Fed Induction Motor Drive

et al. 2021

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The multilevel inverter-based drive system is greatly affected by several faults occurring on switching elements. A faulty switch in the inverter can potentially lead to more losses, extensive downtime and reduced reliability. In this paper, a novel fault identification and reconfiguration process is proposed by using discrete wavelet transform and auxiliary switching cells. Here, the discrete wavelet transform exploits a multiresolution analysis with a feature extraction methodology for fault identification and subsequently for reconfiguration. For increasing the reliability, auxiliary switching cells are integrated to replace faulty cells in a proposed reduced-switch 5-level multilevel inverter topology. The novel reconfiguration scheme compensates open circuit and short circuit faults. The complexity of the proposed system is lower relative to existing methods. This proposed technique effectively identifies and classifies faults using the multiresolution analysis. Furthermore, the measured current and voltage values during fault reconfiguration are close to those under healthy conditions. The performance is verified using the MATLAB/Simulink platform and a hardware model.

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Fault Diagnosis Based on Attention Collaborative LSTM Networks for NPC Three-Level Inverters

Wang

Zhang

et al. 2022

IEEE Trans. Instrum. Meas.

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Integrated fault diagnosis and recovery in NPC multi-level inverters

Cited by 3 publications

References 14 publications

Reconfiguration of NPC Multilevel Inverters to Mitigate Short Circuit Faults Using Back-to-Back Switches

Reconfiguration of NPC Multilevel Inverters to Mitigate Short Circuit Faults Using Back-to-Back Switches

Wavelet Transform Based Fault Identification and Reconfiguration for a Reduced Switch Multilevel Inverter Fed Induction Motor Drive

Fault Diagnosis Based on Attention Collaborative LSTM Networks for NPC Three-Level Inverters

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