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Real-time prediction models for output power and efficiency of grid-connected solar photovoltaic systems
Su Y.1; Chan L.-C.1; Shu L.2; Tsui K.-L.3
2012
Source PublicationApplied Energy
ISSN3062619
Volume93Pages:319
Abstract

This paper develops new real time prediction models for output power and energy efficiency of solar photovoltaic (PV) systems. These models were validated using measured data of a grid-connected solar PV system in Macau. Both time frames based on yearly average and monthly average are considered. It is shown that the prediction model for the yearly/monthly average of the minutely output power fits the measured data very well with high value of R2. The online prediction model for system efficiency is based on the ratio of the predicted output power to the predicted solar irradiance. This ratio model is shown to be able to fit the intermediate phase (9am to 4pm) very well but not accurate for the growth and decay phases where the system efficiency is near zero. However, it can still serve as a useful purpose for practitioners as most PV systems work in the most efficient manner over this period. It is shown that the maximum monthly average minutely efficiency varies over a small range of 10.81% to 12.63% in different months with slightly higher efficiency in winter months. © 2011 Elsevier Ltd.

KeywordEfficiency Grid Connection Photovoltaic System Solar Irradiance
DOI10.1016/j.apenergy.2011.12.052
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
WOS IDWOS:000302836500040
The Source to ArticleScopus
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Citation statistics
Cited Times [WOS]:53   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ACCOUNTING AND INFORMATION MANAGEMENT
DEPARTMENT OF ELECTROMECHANICAL ENGINEERING
Affiliation1.Department of Electromechanical Engineering, University of Macau, Taipa, Macau
2.Faculty of Business Administration, University of Macau, Taipa, Macau
3.School of Industrial and Systems Engineering, Georgia Institute of Technology, USA
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Su Y.,Chan L.-C.,Shu L.,et al. Real-time prediction models for output power and efficiency of grid-connected solar photovoltaic systems[J]. Applied Energy,2012,93:319.
APA Su Y.,Chan L.-C.,Shu L.,&Tsui K.-L..(2012).Real-time prediction models for output power and efficiency of grid-connected solar photovoltaic systems.Applied Energy,93,319.
MLA Su Y.,et al."Real-time prediction models for output power and efficiency of grid-connected solar photovoltaic systems".Applied Energy 93(2012):319.
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