Reliability Analysis and Fault-Tolerant Operation in a Multilevel Inverter for Industrial Application Academic Article uri icon


  • The extensive employment of power semiconductor devices in multilevel inverters (MLIs) has the consequence of increased failure probabilities. With numerous applications demanding highly reliable inverters, several fault-tolerant schemes have been devised to address switch open-circuit faults. This paper analyzes a multilevel inverter topology for IGBT modules undergoing open-circuit faults, a major impediment to reliable operation within a power converter. Reconfiguration of modulation is performed post-fault. A modulation scheme is implemented across failure modes as a hybrid of nearest level control and selective harmonic elimination. Reliability assessment of the topology is performed, including a comparison with previous literature in terms of component requirements and reliability. Simulation results validate the proposed solutions.

published proceedings


author list (cited authors)

  • Fahad, M., Alsultan, M., Ahmad, S., Sarwar, A., Tariq, M., & Khan, I. A.

citation count

  • 6

complete list of authors

  • Fahad, Mohammad||Alsultan, Marwan||Ahmad, Shafiq||Sarwar, Adil||Tariq, Mohd||Khan, Irfan Ahmad

publication date

  • December 2022