Off-grid photovoltaic system for illumination
P. Kouřím, M. Libra, V. Poulekhttps://doi.org/10.17221/25/2014-RAECitation:Kouřím P., Libra M., Poulek V. (2015): Off-grid photovoltaic system for illumination . Res. Agr. Eng., 61: 106-110.
The off-grid photovoltaic (PV) system with batteries and with the LED light source was constructed and tested in in laboratory conditions. The PV system is used for emergency illumination and it is independent of the electric grid. The PV system is suitable for example in agriculture in store, in horse barn or in outdoors place. Description of the construction and testing is presented in this paper as well as results of the tests. The PV system was self-sufficient during the summer and autumn period till the November 3, 2011. Since November the illumination mode was modified. The illumination intensity was lowered, the discharging speed was decreased.Keywords:
solar energy; PV system; energy accumulationReferences:
Brinkhaus Matthis, Jarosch Dieter, Kapischke Jörg (2011): All year power supply with off-grid photovoltaic system and clean seasonal power storage. Solar Energy, 85, 2488-2496 https://doi.org/10.1016/j.solener.2011.07.007Bryan M.M. et al. (2008): LED Street Lighting. Application Assessment Report #0727, Department of Energy, USA.Hassanain A.A. (2011): Drying sage (Salvia officinalis L.) in passive solar dryers. Research in Agricultural Engineering, 57: 19–29.Hsieh Hung-I., Shih Sheng-Fang, Hsieh Jen-Hao, Wang Chi-Hao (2013): Photovoltaic High-Frequency Pulse Charger for Lead-Acid Battery under Maximum Power Point Tracking. International Journal of Photoenergy, 2013, 1-8 https://doi.org/10.1155/2013/687693Chan S.K. (2009): Solar powered LED street lamp with automatic light control. European Patent 2.017.525.A1.Ivanova T., Havrland B., Hutla P., Muntean A. (2012): Drying of cherry tree chips in the experimental biomass dryer with solar collector. Research in Agricultural Engineering, 58: 16–23.Libra M., Sedláček P., Mareš J., Poulek V. (2010): Porovnání PV systémů s pevným a proměnným sklonem PV panelů. Jemná mechanika a optika, 55: 270–271.McCollough N.D. (2008): Photoelectric controller for electric street lighting. US Patent 7.369.056.B2.Muñoz-García M.A., Moreda G.P., Raga-Arroyo M.P., Marín-González O. (2013): Water harvesting for young trees using Peltier modules powered by photovoltaic solar energy. Computers and Electronics in Agriculture, 93, 60-67 https://doi.org/10.1016/j.compag.2013.01.014Poulek V., Libra M. (1998): New solar tracker. Solar Energy Materials and Solar Cells, 51, 113-120 https://doi.org/10.1016/S0927-0248(97)00276-6Poulek V, Libra M (2000): A new low-cost tracking ridge concentrator. Solar Energy Materials and Solar Cells, 61, 199-202 https://doi.org/10.1016/S0927-0248(99)00103-8Poulek V., Libra M. (2010): Photovoltaics, Theory and Practice of Solar Energy Utilization. Prague, ILSA.Sağlam Şafak, Ekren Nazmi, Erdal Hasan (2010): Controlling of grid connected photovoltaic lighting system with fuzzy logic. Solar Energy, 84, 256-262 https://doi.org/10.1016/j.solener.2009.11.003Svoboda Vojtech, Wenzl Heinz, Kaiser Rudi, Jossen Andreas, Baring-Gould Ian, Manwell James, Lundsager Per, Bindner Henrik, Cronin Tom, Nørgård Per, Ruddell Alan, Perujo Adolfo, Douglas Kevin, Rodrigues Carlos, Joyce António, Tselepis Stathis, van der Borg Nico, Nieuwenhout Frans, Wilmot Nigel, Mattera Florence, Sauer Dirk Uwe (2007): Operating conditions of batteries in off-grid renewable energy systems. Solar Energy, 81, 1409-1425 https://doi.org/10.1016/j.solener.2006.12.009