A highly efficient PV system using a series connection of DC–DC converter output with a photovoltaic panel

Ho-sung Kim, Jong-Hyun Kim, Byung-Duk Min, Dong-Wook Yoo and Hee-Je Kim

Renewable Energy, 2009, vol. 34, issue 11, 2432-2436

Abstract: A photovoltaic (PV) power conditioning system (PCS) must have high conversion efficiency and low cost. Generally, a PV PCS uses either a single string converter or a multilevel module integrated converter (MIC). Each of these approaches has both advantages and disadvantages. For a high conversion efficiency and low cost PV module, a series connection of a module integrated DC–DC converter output with a photovoltaic panel was proposed. The output voltage of the PV panel is connected to the output capacitor of the fly-back converter. Thus, the converter output voltage is added to the output voltage of the PV panel. The isolated DC–DC converter generates only the difference voltage between the PV panel voltage and the required total output voltage. This method reduces the power level of the DC–DC converter and enhances energy conversion efficiency compared with a conventional DC–DC converter.

Keywords: photovoltaic; DC–DC converter; fly-back converter; high efficiency (search for similar items in EconPapers)
Date: 2009
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Citations: View citations in EconPapers (15)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:34:y:2009:i:11:p:2432-2436

DOI: 10.1016/j.renene.2009.01.011

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