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Sustainability 2017, 9(4), 657; doi:10.3390/su9040657

Simplified I-V Characteristic Tester for Photovoltaic Modules Using a DC-DC Boost Converter

1
Department of Energy Engineering and Built Environment, An-Najah National University, 97300 Nablus, Palestine
2
Institute of Networked & Embedded Systems/Lakeside Labs, Alpen-Adria-Universität Klagenfurt, 9020 Klagenfurt, Austria
3
Department of Electric, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysai, 43600 Bangi, Malaysia
*
Author to whom correspondence should be addressed.
Academic Editors: Jiawei Gong, Qiquan Qiao, Zhengping Zhou, Tingting Xu, Mao Liang and Wenfeng Zhang
Received: 17 March 2017 / Revised: 14 April 2017 / Accepted: 17 April 2017 / Published: 20 April 2017
(This article belongs to the Special Issue Solar Photovoltaic Electricity)
View Full-Text   |   Download PDF [2377 KB, uploaded 20 April 2017]   |  

Abstract

In this paper, an efficient testing system for measuring a PV module’s I-V curve is proposed. The proposed system is based on a controlled DC-DC boost converter. The advantage of using a DC-DC converter is that this converter is typically used in PV systems to track the maximum power point and to control the charging of the battery. Consequently, this device is utilized for I-V curve extraction without the need for further external devices. The I-V curve is extracted by modifying the duty cycle of the triggering signal of the boost converter’s switch. The proposed system has been tested experimentally using a 120 Wp PV module. The results show that the proposed system can successfully extract I-V curves of PV module. Notably, the performance of the tested module, as measured by this study’s system as well as with a reference system, was found to be in the range of 61–67% of the performance given in the datasheet. Hence, this result highlights the importance of considering a measurement of the actual performance of PV modules when designing any PV system so as to avoid an undersized system. The proposed I-V testing system can be used as a simple tool to diagnose any shortages or low performance problems in PV system. View Full-Text
Keywords: solar cell; I-V curve; PV module; characteristics solar cell; I-V curve; PV module; characteristics
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Khatib, T.; Elmenreich, W.; Mohamed, A. Simplified I-V Characteristic Tester for Photovoltaic Modules Using a DC-DC Boost Converter. Sustainability 2017, 9, 657.

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