Open-Switch Fault Detection and Tolerant Control Based on DC Link Voltage Observation for T-type Rectifiers

Ali Sharida*, Naheel Kamal, Sertac Bayhan, Haitham Abu-Rub

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper proposes a novel open-switch fault detection algorithm for the T-type rectifiers based on the DC link voltage variation. The pattern of the variation of the DC link voltage is observed for each fault scenario under different power levels. The DC link voltage is continuously monitored and compared with the recognized pattern to detect and localize the open-switch fault. When a fault is detected and localized, the algorithm is proposed to change the switching function of the faulty leg. This can be done by using a classical two-level function instead of the three-level switching function. The proposed algorithm focuses on the auxiliary switches faults as they have severe effects on the response of the rectifier. The proposed methodology requires only one voltage sensors and without complex computations or estimation. The validity of the proposed method is demonstrated using hardware experiments.

Original languageEnglish
Title of host publication2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages6595-6599
Number of pages5
ISBN (Electronic)9798350316445
DOIs
Publication statusPublished - 2023
Event2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023 - Nashville, United States
Duration: 29 Oct 20232 Nov 2023

Publication series

Name2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023

Conference

Conference2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023
Country/TerritoryUnited States
CityNashville
Period29/10/232/11/23

Keywords

  • Open-switch fault detection
  • T-type rectifier
  • fault tolerant control

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