Distributed power-management architecture for a low-profile concentrating-PV system

M.S. Zaman, S. Poshtkouhi, V. Palaniappan, K.W. Li, H.J. Bergveld, S. Myrskog, O. Trescases

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

6 Citations (Scopus)

Abstract

This paper presents a low-cost dc-dc distributed power-management architecture for a low-profile concentrating-photovoltaic (CPV) system. The proposed scheme uses inverting buck-boost converters connected across neighboring series-connected CPV cells to achieve a virtual-parallel connection and thus improve the tolerance of the overall system to parameter variations. Since the converters process the difference between corresponding cell currents and the string current, they have reduced power-handling and efficiency requirements. Current cascading is identified as the main challenge with this architecture. Statistical simulations are used to investigate the current distributions in the converters, and power benefits are analyzed using measured data from a six-cell CPV system. Experimental results from four- and three-cell systems using digitally controlled converters demonstrate clear power benefits in the presence of tracker misalignment and short-circuit current mismatches.
Original languageEnglish
Title of host publicationProceedings of the 2012 15th International Power Electronics and Motion Control Conference (EPE/PEMC), 4-6 September 2012, Novi Sad, Serbia
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
PagesLS2d.4-1/8
DOIs
Publication statusPublished - 2012
Event15th International Power Electronics and Motion Control Conference and Exposition (EPE-PEMC 2012 ECCE Europe) - Novi Sad, Serbia
Duration: 4 Sep 20126 Sep 2012
Conference number: 15

Conference

Conference15th International Power Electronics and Motion Control Conference and Exposition (EPE-PEMC 2012 ECCE Europe)
Abbreviated titleEPE-PEMC 2012 ECCE Europe
CountrySerbia
CityNovi Sad
Period4/09/126/09/12

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