Six-parameter electrical model for photovoltaic cell/module with compound parabolic concentrator

Li, Wei; Paul, Manosh C; Sellami, Nazmi; Sweet, Tracy; Montecucco, Andrea; Siviter, Jonathan; Baig, Hasan; Gao, Min; Mallick, T; Knox, A

Abstract

It is known that compound parabolic concentrators (CPCs) can improve electrical performance of a photovoltaic (PV) flat-plate system. However, a lumped electrical model of a PV cell/module with CPC for assessing performance under different operating conditions is unavailable. In this paper, a six-parameter based model is developed and applied to a PV cell, two PV models with CPC, and a PV module with 2D asymmetric CPC (trough). For validation, CPC with a single PV cell and two CPC modules with 2 × 2 and 9 × 9 PV cells are fabricated and measured in an indoor laboratory under standard test conditions. Results show that the optimised algorithm precisely predicts the six model parameters. A sensitivity analysis is performed to identify the importance of each parameter in the model. Ideality factor, circuit current and reverse saturation current are found to be the most dominant factor, while shunt resistance is the least important with CPC gain coefficient and series resistance are in between. Transient performance of a PV cell with CPC under variable outdoor climate conditions is also examined by coupling optical, thermal and electrical effects.

• Journal Article Type: Article
• Acceptance Date: Aug 28, 2016
• Online Publication Date: Sep 8, 2016
• Publication Date: 2016-11
• Deposit Date: Dec 12, 2021
• Publicly Available Date: Jun 28, 2023
• Journal: Solar Energy
• Print ISSN: 0038-092X
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 137
• Pages: 551-563
• DOI: https://doi.org/10.1016/j.solener.2016.08.050
• Keywords: Photovoltaic cell and module, Compound parabolic concentrator, PV electrical model, Computational fluid dynamics, Multiphysics simulation
• Public URL: http://researchrepository.napier.ac.uk/Output/2818370