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Sustainability 2017, 9(3), 371; doi:10.3390/su9030371

Series Connected Photovoltaic Cells—Modelling and Analysis

1
Electrical and Computer Engineering Department, Abu Dhabi University, 59911 Abu Dhabi, UAE
2
Electrical Engineering Department, the Hashemite University, 13115 Zarqa, Jordan
*
Author to whom correspondence should be addressed.
Academic Editors: Jiawei Gong, Qiquan Qiao, Zhengping Zhou, Tingting Xu, Mao Liang and Wenfeng Zhang
Received: 11 January 2017 / Revised: 22 February 2017 / Accepted: 28 February 2017 / Published: 7 March 2017
(This article belongs to the Special Issue Solar Photovoltaic Electricity)
View Full-Text   |   Download PDF [1426 KB, uploaded 7 March 2017]   |  

Abstract

As solar energy costs continue to drop, the number of large-scale deployment projects increases, and the need for different analysis models for photovoltaic (PV) modules in both academia and industry rises. This paper proposes a modified equivalent-circuit model for PV modules. A PV module comprises several series-connected PV cells, to generate more electrical power, where each PV cell has an internal shunt resistance. Our proposed model simplifies the standard one-diode equivalent-circuit (SEC) model by removing the shunt resistance and including its effect on the diode part of the circuit, while retaining the original model accuracy. Our proposed equivalent circuit, called here a modified SEC (MSEC), has less number of circuit elements. All of the PV cells are assumed operating under the same ambient conditions where they share the same electric voltage and current values. To ensure the simplification did not come at a reduction in the accuracy of the SEC model, we validate our MSEC model by simulating both under the same conditions, calculate, and compare their current/voltage (I/V) characteristics. Our results validate the accuracy of our model with the difference between the two models falling below 1%. Therefore, the proposed model can be adopted as an alternative representation of the equivalent circuit for PV cells and modules. View Full-Text
Keywords: photovoltaic module; equivalent-circuit; current/voltage characteristics photovoltaic module; equivalent-circuit; current/voltage characteristics
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Al Tarabsheh, A.; Akmal, M.; Ghazal, M. Series Connected Photovoltaic Cells—Modelling and Analysis. Sustainability 2017, 9, 371.

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