A cascaded online uninterruptible power supply using reduced semiconductor

Lei Zhang, Poh Chiang Loh , Feng Gao , Frede Blaabjerg

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

4 Citations (Scopus)

Abstract

A cascaded online uninterruptible power supply (UPS) is proposed here that uses 25% lesser semiconductor, as compared to its traditional H-bridge cascaded precedence. Unlike other component-saving configurations where compromises are unavoidable, almost no performance degradations and constraints are experienced by the presented UPS, as guaranteed through proper topological and control design. Advantages of the cascaded UPS can therefore be summarized as reduced system cost, improved redundancy, better waveform quality and the same reliable protection expected from an online system. The only disadvantage, if considered so, is the requirement for slight logic manipulation of the switch gating signals, which in practice can simply be done by discrete logic gates without involving expensive programmable devices. Simulation results are presented to verify the discussed
concepts.
Original languageEnglish
Title of host publicationProceedings of the 3rd IEEE Energy Conversion Congress and Exposition (ECCE 2011)
Number of pages6
PublisherIEEE Press
Publication date2011
Pages3167-3172
ISBN (Print)978-1-4577-0542-7
DOIs
Publication statusPublished - 2011
Event3rd IEEE Energy Conversion Congress and Exposition (ECCE 2011) - Phoenix, Arizona, United States
Duration: 17 Sep 201122 Sep 2011

Conference

Conference3rd IEEE Energy Conversion Congress and Exposition (ECCE 2011)
CountryUnited States
CityPhoenix, Arizona
Period17/09/201122/09/2011

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