Loss Distribution Analysis of a Three-Port Converter for Low-Power Stand-Alone Light-to-Light Systems

Maria del Carmen Mira Albert, Arnold Knott, Michael A. E. Andersen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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Abstract

In locations far from the equator achieving high conversion efficiency in low-power solar systems is challenging due to low solar irradiance levels. This paper presents a high efficiency three-port converter (TPC) for light-to-light (LtL) applications where no direct solar conversion is required. The separation of the power flows allows to replace the conventional solution of two cascaded converters into a single structure with shared components. A loss distribution analysis of the proposed structure is performed, which shows very good match with the experimental results. A prototype of the TPC demonstrates high efficiency in both power flow paths. At low irradiation level, the power flow from the photovoltaic panel to the battery shows a peak efficiency of 99.1% at at 1.5 W output power, and the LED driver stage presents a peak efficiency of 97.3% at 3 W output power.
Original languageEnglish
Title of host publicationProceedings of the 18th Conference on Power Electronics and Application
Number of pages10
PublisherIEEE
Publication date2016
ISBN (Print)9789075815252
DOIs
Publication statusPublished - 2016
Event18th European Conference on Power Electronics and Applications - Karlsruhe, Germany
Duration: 5 Sep 20169 Sep 2016

Conference

Conference18th European Conference on Power Electronics and Applications
Country/TerritoryGermany
CityKarlsruhe
Period05/09/201609/09/2016

Keywords

  • Three-Port Converter (TPC)
  • Photovoltaic (PV)
  • Light-emitting diode (LED)
  • Standalone
  • High efficiency

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