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Reliability Analysis of Three Homogeneous Fault-tolerant Inverter Topologies

  • Authors: Boscaino, V.; Miceli, R.; Genduso, F.; Blaabjerg, F.
  • Publication year: 2016
  • Type: Articolo in rivista (Articolo in rivista)
  • OA Link:


—In this article, non-redundant fault-tolerant inverter topologies are addressed. A novel fault-tolerant control strategy which enhances performances during post-fault operation is proposed. Benefits from the proposed strategy over conventional fault-tolerant topologies are investigated in terms of system reliability. Cost, post-fault performances, and system reliability of the proposed solution are compared with both a conventional triac-based fault-tolerant inverter and a T-type inverter. The reliability analysis of each selected configuration is carried out by means of Markov chains. The analysis is validated through a comparison of reliability and sensitivity curves. As shown by simulation results, the proposed fault-tolerant inverter features the highest reliability and the least sensitivity to devices’ failure rates. The proposed analysis contributes to the development and improvement of a reliability-oriented design approach.