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Measurements of power transfer efficiency in CPV cell-array models using individual DC–DC converters

Author

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  • Eccher, M.
  • Salemi, A.
  • Turrini, S.
  • Brusa, R.S.

Abstract

The high degree of non-uniformity in the irradiance distribution over series-connected solar cells is the main obstacle to the development of concentration photovoltaic (CPV) systems using parabolic dishes. In order to overcome the power loss resulting from the current mismatch due to illumination inhomogeneity, we propose a new cell connection with individual DC–DC converters. The aim of this work is to present an experimental procedure to implement this new approach and to demonstrate its advantages with a basic CPV array prototype. Two separate experiments are carried out respectively with real and equivalent-circuit solar cells in order to study the I–V behavior of the connection under different irradiance distributions. The cells working points which yield the highest net power are determined by maximizing the array efficiency by means of a calculation algorithm. The effectiveness of the system is then proved by comparing the output power obtained by field measurement, with the maximum power that could be delivered by the cells array connected in series. In this study, a possible path towards the development of a more effective CPV receiver prototype is outlined.

Suggested Citation

  • Eccher, M. & Salemi, A. & Turrini, S. & Brusa, R.S., 2015. "Measurements of power transfer efficiency in CPV cell-array models using individual DC–DC converters," Applied Energy, Elsevier, vol. 142(C), pages 396-406.
    • Handle: RePEc:eee:appene:v:142:y:2015:i:c:p:396-406
    DOI: 10.1016/j.apenergy.2014.12.038
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    References listed on IDEAS

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    1. Siaw, Fei-Lu & Chong, Kok-Keong & Wong, Chee-Woon, 2014. "A comprehensive study of dense-array concentrator photovoltaic system using non-imaging planar concentrator," Renewable Energy, Elsevier, vol. 62(C), pages 542-555.
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    1. Saravanan, S. & Ramesh Babu, N., 2017. "Analysis and implementation of high step-up DC-DC converter for PV based grid application," Applied Energy, Elsevier, vol. 190(C), pages 64-72.
    2. Zhifu, Wang & Yupu, Wang & Yinan, Rong, 2017. "Design of closed-loop control system for a bidirectional full bridge DC/DC converter," Applied Energy, Elsevier, vol. 194(C), pages 617-625.
    3. Chin, Vun Jack & Salam, Zainal & Ishaque, Kashif, 2015. "Cell modelling and model parameters estimation techniques for photovoltaic simulator application: A review," Applied Energy, Elsevier, vol. 154(C), pages 500-519.
    4. Wang, Chun & Xiong, Rui & He, Hongwen & Ding, Xiaofeng & Shen, Weixiang, 2016. "Efficiency analysis of a bidirectional DC/DC converter in a hybrid energy storage system for plug-in hybrid electric vehicles," Applied Energy, Elsevier, vol. 183(C), pages 612-622.
    5. M. Karthikeyan & R. Elavarasu & P. Ramesh & C. Bharatiraja & P. Sanjeevikumar & Lucian Mihet-Popa & Massimo Mitolo, 2020. "A Hybridization of Cuk and Boost Converter Using Single Switch with Higher Voltage Gain Compatibility," Energies, MDPI, vol. 13(9), pages 1-24, May.
    6. Bradai, R. & Boukenoui, R. & Kheldoun, A. & Salhi, H. & Ghanes, M. & Barbot, J-P. & Mellit, A., 2017. "Experimental assessment of new fast MPPT algorithm for PV systems under non-uniform irradiance conditions," Applied Energy, Elsevier, vol. 199(C), pages 416-429.
    7. Turrini, Sebastiano & Bettonte, Marco & Eccher, Massimo & Grigiante, Maurizio & Miotello, Antonio & Brusa, Roberto S., 2018. "An innovative small-scale prototype plant integrating a solar dish concentrator with a molten salt storage system," Renewable Energy, Elsevier, vol. 123(C), pages 150-161.

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