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Loss Distribution Analysis of a Three-Port Converter for Low-Power Stand-Alone Light-to-Light Systems
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| Author(s) |
MARIA DEL CARMEN MIRA ALBERT |
| Abstract |
In locations far from the equator achieving high conversion efficiency in low-power solar systems ischallenging 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 separationof the power flows allows to replace the conventional solution of two cascaded converters into a singlestructure 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 highefficiency in both power flow paths. At low irradiation level, the photovoltaic to battery stage shows apeak efficiency of 99.1 \% at at 1.5 W output power and the LED driver stage presents a peak efficiencyof 97.3 \% at 3 W output power. |
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| Filename: | 0552-epe2016-full-22515194.pdf |
| Filesize: | 2.111 MB |
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| Type |
Members Only |
| Date |
Last modified 2017-04-13 by System |
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