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A Proposed Solution for Partial Shadowing
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 121 - Number 18 |
| Year of Publication: 2015 |
| Authors: Mohamed Nageh, Wagdy R. Anis, Ismail M. Hafez |
10.5120/21642-4974
|
Mohamed Nageh, Wagdy R. Anis, Ismail M. Hafez . A Proposed Solution for Partial Shadowing. International Journal of Computer Applications. 121, 18 ( July 2015), 28-38. DOI=10.5120/21642-4974
Abstract
The Partial Shadowing (PS) is one of the hotspot topics and one of the significant challenges in the Photovoltaic (PV) systems. The PS of PV modules cause serious energy loss of the PV energy. It is observed (using detailed simulation MATLAB programs) that, The PS effect is clear on both of I-V & P-V output characteristics (Ch/s) curves. Also, it is observed that, the energy loss due to PS when no diode is used is significantly large. But when the diodes are used, the energy loss decreases appreciably. The saving in energy loss increases as the number of diodes per module increases. It is proposed here to increase the number of diodes per each group of solar cells results in saving of energy loss. This Paper shows the recommended number of bypass diodes (Internal or External) solution to reduce the energy loss. The internal solution by increasing of diodes number per module, while the external solution by increasing of diodes number per group. This paper also discusses the effect of increasing the operating voltage of the system on PS loss.
References
- Smita Pareek and Ratna Dahiya. 2015,"Simulation and Performance Analysis of Individual Module to Address Partial Shading cum Parameter Variation in Large Photovoltaic Fields", Vol. 2, No. 3, 2015, pp. 99-104.
- SWAPNIL BORADE and MR. G. K. MAHAJAN. 2015, "MPPT Controller under Partial Shading Condition", E-ISSN: 2348-0831 Volume 2, Issue 3 (MAR-APR 2015) PP 56-60.
- JianboBai, Yang Cao, YuzheHao, Zhen Zhang, Sheng Liu and Fei Cao. 2015,"Characteristic output of PV systems under partial shading or mismatch conditions", Solar Energy 112 41–54.
- L. Fialho, R. Melicio, V. M. F. Mendes, J. Figueiredo and M. Collares-Pereira. 2014,"Effect of Shading on Series Solar Modules: Simulation and Experimental Results", Procedia Technology 17 (2014) 295 – 302.
- Peter Bulanyi and Rodd Zhang. 2014,"Shading Analysis & Improvement for Distributed Residential Grid- Connected Photovoltaics Systems", Solar 2014.
- Younis Khalaf, Osama Ibraheem, Mustafa Adil, Salih Mohammed, Mohammed Qasim and Khaled Waleed. 2014,"Maximum Power Point Evaluation of Photovoltaic Modules Under Shading Effect", European Scientific Journal March 2014 edition vol. 10, No. 9 ISSN: 1857 – 7881 (Print) e - ISSN 1857- 7431.
- Basim A. Alsayid, Samer Y. Alsadi, Ja'far S. Jallad and Muhammad H. Dradi. 2013,"Partial Shading of PV System Simulation with Experimental Results", Smart Grid and Renewable Energy. 4, 429-435.
- N. Belhaouas, M. S. Ait Cheikh, A. Malek and C. Larbes. 2013,"Matlab-Simulink of photovoltaic system based on a two-diode model simulator with shaded solar cells",Revue des Energies Renouvelables Vol. 16 N°1 (2013) 65 – 73.
- Ajay Patel, Vikas Kumar and Yogendra Kumar. 2013, "Perturb and Observe Maximum Power Point Tracking for Photovoltaic Cell", Vol. 4, No. 6, 2013.
- Anis, Wagdy R. 1989,"Partial Shadowing Protection without Diodes", Solar cells, 26 () 227 - 239.
- Tiwari, Gopal Nath and Swapnil Dubey. 2010, "Fundamentals of photovoltaic modules and their applications", No. 2 Royal Society of Chemistry.
- Anis Wagdy R. 1985,"Design of photovoltaic systems for tropical climates", Ph. D. thesis, catholic university of loavain, Belgium, Solar cells15, no. 1.
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