Journal
SOLAR ENERGY
Volume 135, Issue -, Pages 512-517Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2016.06.013
Keywords
Photovoltaic systems; Power electronics; Partial shading; Energy conversion; Power system simulation
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Funding
- Advanced Research Projects Agency-Energy, U.S. Department of Energy [DE-AR0000216]
- People Programme of the European Union's Seventh Framework Programme (FP7) under REA [626117]
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Large commercial photovoltaic (PV) systems can experience regular and predictable energy loss due to both inter-row shading and reduced diffuse irradiance in tightly spaced arrays. This paper investigates the advantages of replacing bypass diodes with submodule-integrated DC-DC converters (subMICs) to mitigate these losses. Yearly simulations of commercial-scale PV systems were conducted considering a range of row-to-row pitches. In the limit case of array spacing (unity ground coverage), subMICs can confer a 7% increase in annual energy output and peak energy density (kW h/m(2)). Simulation results are based on efficiency assumptions experimentally confirmed by prototype submodule differential power-processing converters. Published by Elsevier Ltd.
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