Comprehensive Reliability Review and Assessment of Z-Source Step-Up DC–DC Converters
The Z-source (ZS) or Quasi-ZS converters are among the popular DC–DC converters that employ impedance networks to enable a wide output voltage range and step-up capability. These converters typically offer low normalized (per-unit) voltage stress across components. In recent years, a vari...
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| Format: | Article |
| Language: | English |
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IEEE
2025-01-01
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| Series: | IEEE Open Journal of Power Electronics |
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| Online Access: | https://ieeexplore.ieee.org/document/11081904/ |
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| author | Milad Khoubrooy-Eslamloo Kazem Varesi Hadi Tarzamni Sze Sing Lee |
| author_facet | Milad Khoubrooy-Eslamloo Kazem Varesi Hadi Tarzamni Sze Sing Lee |
| author_sort | Milad Khoubrooy-Eslamloo |
| collection | DOAJ |
| description | The Z-source (ZS) or Quasi-ZS converters are among the popular DC–DC converters that employ impedance networks to enable a wide output voltage range and step-up capability. These converters typically offer low normalized (per-unit) voltage stress across components. In recent years, a variety of improved ZS topologies have been proposed, offering enhancements over the conventional design. The previously published articles present extensive studies analyzing ZS converters from multiple perspectives, including component count, step-up/down capability, voltage stress, source current characteristics (pulsating or non-pulsating), common ground availability, duty cycle range, efficiency, cost, and power density. However, reliability analysis of these converters has received relatively little attention. This study expresses comprehensive reliability review and assessment on popular traditional and developed ZS topologies. Moreover, the effect of changes in each of design or operational parameters on converters’ reliability and Mean Time to Failure as well as components’ failure rate and the sensitivity of components’ failure rate have been studied. The results contribute to the optimal sizing of design and operational parameters to enhance component lifetime and guarantee the converter’s maximum reliability. The validity of the theoretical analysis is confirmed through experimental thermal testing. |
| format | Article |
| id | doaj-art-f8657c93bd534709a4d54433d7c021fe |
| institution | DOAJ |
| issn | 2644-1314 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of Power Electronics |
| spelling | doaj-art-f8657c93bd534709a4d54433d7c021fe2025-08-20T03:16:12ZengIEEEIEEE Open Journal of Power Electronics2644-13142025-01-0161310132210.1109/OJPEL.2025.358953611081904Comprehensive Reliability Review and Assessment of Z-Source Step-Up DC–DC ConvertersMilad Khoubrooy-Eslamloo0https://orcid.org/0000-0002-7818-2831Kazem Varesi1https://orcid.org/0000-0002-9802-1058Hadi Tarzamni2https://orcid.org/0000-0002-6963-9852Sze Sing Lee3https://orcid.org/0000-0003-2455-5783Faculty of Electrical and Computer Engineering, Sahand University of Technology, Tabriz, IranFaculty of Electrical and Computer Engineering, Sahand University of Technology, Tabriz, IranDepartment of Electrical Engineering and Automation, Aalto University, Espoo, FinlandDepartment of Electrical and Electronic Engineering, Newcastle University in Singapore (NUiS), SingaporeThe Z-source (ZS) or Quasi-ZS converters are among the popular DC–DC converters that employ impedance networks to enable a wide output voltage range and step-up capability. These converters typically offer low normalized (per-unit) voltage stress across components. In recent years, a variety of improved ZS topologies have been proposed, offering enhancements over the conventional design. The previously published articles present extensive studies analyzing ZS converters from multiple perspectives, including component count, step-up/down capability, voltage stress, source current characteristics (pulsating or non-pulsating), common ground availability, duty cycle range, efficiency, cost, and power density. However, reliability analysis of these converters has received relatively little attention. This study expresses comprehensive reliability review and assessment on popular traditional and developed ZS topologies. Moreover, the effect of changes in each of design or operational parameters on converters’ reliability and Mean Time to Failure as well as components’ failure rate and the sensitivity of components’ failure rate have been studied. The results contribute to the optimal sizing of design and operational parameters to enhance component lifetime and guarantee the converter’s maximum reliability. The validity of the theoretical analysis is confirmed through experimental thermal testing.https://ieeexplore.ieee.org/document/11081904/Boost DC–DC converterfailure rategainreliabilitysensitivityZ-source |
| spellingShingle | Milad Khoubrooy-Eslamloo Kazem Varesi Hadi Tarzamni Sze Sing Lee Comprehensive Reliability Review and Assessment of Z-Source Step-Up DC–DC Converters IEEE Open Journal of Power Electronics Boost DC–DC converter failure rate gain reliability sensitivity Z-source |
| title | Comprehensive Reliability Review and Assessment of Z-Source Step-Up DC–DC Converters |
| title_full | Comprehensive Reliability Review and Assessment of Z-Source Step-Up DC–DC Converters |
| title_fullStr | Comprehensive Reliability Review and Assessment of Z-Source Step-Up DC–DC Converters |
| title_full_unstemmed | Comprehensive Reliability Review and Assessment of Z-Source Step-Up DC–DC Converters |
| title_short | Comprehensive Reliability Review and Assessment of Z-Source Step-Up DC–DC Converters |
| title_sort | comprehensive reliability review and assessment of z source step up dc x2013 dc converters |
| topic | Boost DC–DC converter failure rate gain reliability sensitivity Z-source |
| url | https://ieeexplore.ieee.org/document/11081904/ |
| work_keys_str_mv | AT miladkhoubrooyeslamloo comprehensivereliabilityreviewandassessmentofzsourcestepupdcx2013dcconverters AT kazemvaresi comprehensivereliabilityreviewandassessmentofzsourcestepupdcx2013dcconverters AT haditarzamni comprehensivereliabilityreviewandassessmentofzsourcestepupdcx2013dcconverters AT szesinglee comprehensivereliabilityreviewandassessmentofzsourcestepupdcx2013dcconverters |