Forecasting photovoltaic array power production subject to mismatch losses

Journal Article · Thu Jul 15 04:00:00 EDT 2010 · Solar Energy

DOI:https://doi.org/10.1016/J.SOLENER.2010.04.009· OSTI ID:21328663

Picault, D; Raison, B; Bacha, S ^[1]; de la Casa, J; Aguilera, J ^[2]

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1. Grenoble Electrical Engineering Laboratory (G2Elab), 961, rue Houille Blanche BP 46, 38402 St Martin d'Heres (France)
2. Grupo de Investigacion IDEA, Departamento de Electronica, Escuela Politecnica Superior, Universidad de Jaen, Campus Las Lagunillas, 23071 Jaen (Spain)

The development of photovoltaic (PV) energy throughout the world this last decade has brought to light the presence of module mismatch losses in most PV applications. Such power losses, mainly occasioned by partial shading of arrays and differences in PV modules, can be reduced by changing module interconnections of a solar array. This paper presents a novel method to forecast existing PV array production in diverse environmental conditions. In this approach, field measurement data is used to identify module parameters once and for all. The proposed method simulates PV arrays with adaptable module interconnection schemes in order to reduce mismatch losses. The model has been validated by experimental results taken on a 2.2 kW{sub p} plant, with three different interconnection schemes, which show reliable power production forecast precision in both partially shaded and normal operating conditions. Field measurements show interest in using alternative plant configurations in PV systems for decreasing module mismatch losses. (author)

• OSTI ID: 21328663
• Journal Information: Solar Energy, Journal Name: Solar Energy Journal Issue: 7 Vol. 84; ISSN 0038-092X; ISSN SRENA4
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
ACCURACY
CONFIGURATION
FORECASTING
Interconnection schemes
Mismatch losses
PHOTOVOLTAIC POWER PLANTS
POWER GENERATION
POWER LOSSES
POWER RANGE 01-10 KW
SHADING
SIMULATION
SOLAR CELL ARRAYS