Forecasting photovoltaic array power production subject to mismatch losses

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 in...

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Veröffentlicht in:Solar energy Jg. 84; H. 7; S. 1301 - 1309
Hauptverfasser: Picault, D., Raison, B., Bacha, S., de la Casa, J., Aguilera, J.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Kidlington Elsevier Ltd 01.07.2010
Elsevier
Pergamon Press Inc
Schlagworte:
ACCURACY
Applied sciences
Arrays
CONFIGURATION
Electric power
Energy
Engineering Sciences
Environmental conditions
Equipments, installations and applications
Exact sciences and technology
FORECASTING
Interconnection scheme
Interconnection schemes
Interconnections
Mathematical models
Measurement
Mismatch losses
Modules
Natural energy
Photovoltaic array modelling
Photovoltaic cells
Photovoltaic conversion
PHOTOVOLTAIC POWER PLANTS
Photovoltaics
POWER GENERATION
POWER LOSSES
Power plants
POWER RANGE 01-10 KW
SHADING
SIMULATION
SOLAR CELL ARRAYS
Solar cells
Solar collectors
SOLAR ENERGY
Solar power generation
Interconnection scheme
Mismatch losses
Photovoltaic array modelling
Interconnection
Power production
Photovoltaic array
Power losses
Photovoltaic system
Modeling
Shadowing
Forecasting
Operating conditions
ISSN:0038-092X, 1471-1257
Online-Zugang:Volltext
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Beschreibung
Zusammenfassung: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 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.
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ISSN:0038-092X
1471-1257
DOI:10.1016/j.solener.2010.04.009