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Please use this identifier to cite or link to this item: http://repository.fuoye.edu.ng/handle/123456789/1230

Title: Development of a universal DC power supply using solar photovoltaic utility and battery power sources
Authors: Oni, J.O.
Bolaji, Bukola Olalekan
Keywords: Photovoltaic
Solar energy
d.c. power
Issue Date: 2011
Publisher: Journal of Energy in Southern African, Energy Research Centre, University of Cape Town
Series/Report no.: Volume 22;No. 1, pp. 12-17
Abstract: In this paper, a universal d.c. power supply system was developed and tested in order to provide uninterrupted power for d.c. appliances. The system employs simple Diode OR logic for the three power sources (mains from utility power supply, the solar photovoltaic and battery). The parallel combination of the three diodes at the output functions like a comparator circuit and compares the outputs voltage of the three sources, so that the highest voltage at a particular time feeds the d.c. output and supplies the charging current to the battery. The universal d.c. power supply system was tested under various operating conditions and the results obtained showed a good performance of the system. The system outputs when all the power sources were available, during utility power failure and when only the stored energy in the back-up battery was available were 13.8, 13.1 and 12.2V, respectively. The system guarantees an uninterrupted power supply, which can be used to power telecommunication equipment, audiovisual materials, computers, d.c. motor driven devices and other d.c. appliances. A typical day solar radiation varied from 547 W/m2 to 865 W/m2 while the generated voltage from PV varied from 11.8 V to 13.7 V. The generated voltage from solar power source increases with the increase in solar radiation
URI: http://repository.fuoye.edu.ng/handle/123456789/1230
Appears in Collections:Mechatronics and Mechanical Journal Publications

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