A three-point-based electrical model and its application in a photovoltaic thermal hybrid roof-top system with crossed compound parabolic concentrator

Li, W., Paul, M.C. , Baig, H., Siviter, J., Montecucco, A., Mallick, T.K. and Knox, A.R. (2019) A three-point-based electrical model and its application in a photovoltaic thermal hybrid roof-top system with crossed compound parabolic concentrator. Renewable Energy, 130, pp. 400-415. (doi:10.1016/j.renene.2018.06.021)

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Abstract

A new coupled optical, thermal and electrical model is presented in this study and applied to a 27 concentrating photovoltaic thermal (PV/T) system for predicting the system performance under 28 various operational conditions. Firstly, a three-point-based electrical model and a method for 29 extracting its five model parameters are developed by using the currents and voltages at the short-, 30 open-circuit and maximum power points provided in usual PV module/panel datasheets. Then, the 31 model and method are validated with the existing six flat-plate PV modules and subsequently are used 32 to predict the hourly electrical performance of the CPV/T roof-top system designed by us under 33 outdoor conditions on four clear days by integrating with a scaling law developed by us. Additionally, 34 transient effect and water temperature on the storage tank are examined. It turned out that the CPV 35 system could operate for 6 hours a day with a peak instant electrical power of 50W/m2 and could 36 generate 0.22kWh/m2 electricity a day in May-July. The error in hourly electrical energy gained 37 between the predictions and observations is in a range of (3.64-8.95)% with the mean of 5.53 % in 38 four days, and the estimated water temperature in the storage tank agrees with the monitored one in 39 range of 0.2-1oC. The proposed methods as well as the electrical models could potentially be applied 40 widely across the solar energy field for the management and operation of the electrical energy 41 production from any CPV/T roof-top system.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Paul, Dr Manosh and Knox, Professor Andrew and Siviter, Dr Jonathan and Li, Dr Wenguang and Montecucco, Dr Andrea
Authors: Li, W., Paul, M.C., Baig, H., Siviter, J., Montecucco, A., Mallick, T.K., and Knox, A.R.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
College of Science and Engineering > School of Engineering > Systems Power and Energy
College of Science and Engineering > School of Mathematics and Statistics > Mathematics
Journal Name:Renewable Energy
Publisher:Elsevier Ltd.
ISSN:0960-1481
ISSN (Online):1879-0682
Published Online:12 June 2018
Copyright Holders:Copyright © 2018 The Authors
First Published:First published in Renewable Energy 130:400-415
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
614241Scalable Solar Thermoelectrics and Photovaltaics (SUNTRAP)Andrew KnoxEngineering and Physical Sciences Research Council (EPSRC)EP/K022156/1ENG - ENGINEERING ELECTRONICS & NANO ENG