Hybrid Daytime Lighting System with Photovoltaics and Short-term Storage

• Autorzy: Marańda W. W. , Piotrowicz M.
• Języki publikacji: EN

Abstrakty

EN

Most efficient utilization of electrical energy takes place when energy is consumed locally, avoiding its distribution over long distances or costly storage technologies. Finding such applications for renewable energy sources, like wind or solar, is difficult. The main obstacle is the their limited predictability and the mismatch between energy availability and demand. Nowadays the daytime lighting in modern urban architecture causes a considerable electricity consumption. For such applications, there exists an excellent match between energy availability (solar irradiance) and consumption demand (interior illumination). Moreover, the demand can be met with relatively small PV-generators with modern energy efficient lighting technology. In this paper a hybrid lighting system for daytime, using both natural and artificial light, has been proposed. The supply for artificial lighting is provided from photovoltaic (PV) system or the utility grid, when solar irradiance cannot meet the illumination and electricity demand. The paper presents the results of simulation of full year energy savings in a daytime lighting system. The system maintains the indoor illumination level to be equal or higher than required by the norms, using natural sunlight and artificial lighting. The artificial lighting is used only to compensate the deficiencies of sunlight and is powered with autonomous PV-system in the climatic conditions of Central Europe. The PV-system is also equipped with short-term energy storage, based on super capacitor, allowing for only several minute of backup supply. Such storage is used only to mitigate the rapid solar power fluctuations, providing energy from PV supply at more stable power level during the day, but the excess of energy is not fed to the utility grid. The numerical simulation is using the solar irradiance data collected with 5 s time resolution during the whole year 2010 at Lodz University of Technology, in center of Poland.

Słowa kluczowe

EN

photovoltaics; autonomous system; lighting; supercapacitor

PL

fotowoltaika; system autonomiczny; superkondensator

• Wydawca: Lodz University of Technology. Department of Microelectronics and Computer Science
• Czasopismo: International Journal of Microelectronics and Computer Science
• Rocznik: 2012
• Tom: Vol. 3, nr 1
• Strony: 15--20
• Opis fizyczny: Bibliogr. 8 poz.

Twórcy

autor

Marańda W. W.

autor

Piotrowicz M.

• Department of Microelectronics and Computer Science, Faculty of Electrical, Electronic, Computer and Control Engineering, Technical University of Lodz, Wólczańska 221/223, 90-924 Łódź, Poland,

Bibliografia

• [1] P. Campo, M. Piotrowicz, W. Marańda, and P. Sekalski, “Energy Saving by Compensation of Daylight Deficiencies in Buildings,” in Proceedings of the 17th International Conference Mixed Design of Integrated Circuits and Systems (MIXDES), Wrocław, Poland, June 24–26, 2010 . Dept. of Microelectronics and Computer Science, Lodz University of Technology, Poland, June 2010, pp. 510–513.
• [2] W. Marańnda and M. Piotrowicz, “Short-time Energy Buffering for Photovoltaic System,” in Proceedings of the 17th International Conference Mixed Design of Integrated Circuits and Systems (MIXDES), Wrocław, Poland, June 24–26, 2010 . Dept. of Microelectronics and Computer Science, Lodz University of Technology, Poland, 2010, pp. 525–528.
• [3] “Operation of Photovoltaic Array with Small Energy Buffer under Variable Insolation Conditions,” International Journal of Microelectronics and Computer Science , vol. 1, no. 2, pp. 195–200, 2010.
• [4] PN-EN 12464-1:2004.
• [5] “Leadership in Energy and Environmental Design (LEED) Green Building Rating System,” http://www.usgbc.org.
• [6] M. G. Villalva, J. R. Gazoli, and E. R. Filho, “Comprehensive Approach to Modeling and Simulation of Photovoltaic Arrays,” IEEE Trans. Power Electron. , vol. 24, no. 5, pp. 1198–1208, 2009.
• [7] W. Marańda, “Numerical Modeling of Photovoltaic Devices with Python Scripting Language,” in Proceedings of the XVII International Conference on Information Technology Systems (SiS), Łódź, Poland, November 3– 5, 2010 . Dept. of Applied Computer Science, Lodz University of Technology, 2010.
• [8] W. Marańda, G. Jabłoński, and D. Makowski, “1kWp PV System at Technical University of Lodz in Poland,” in Proceedings of the 19th European PV Solar Energy Conference, Paris, June 2004 , vol. 3. WIP - Renewable Energies, Germany, 2004, pp. 2915–2917.