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http://dx.doi.org/10.5762/KAIS.2010.11.8.2999

72[W] Power LED Photovoltaic Lighting System including the Current Limiting Function  

Park, Hyo-Sik (Dept. of New & Renewable Energy, Vision University of Jeonju)
Han, Woo-Yong (Dept. of New & Renewable Energy, Vision University of Jeonju)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.11, no.8, 2010 , pp. 2999-3004 More about this Journal
Abstract
In comparison with some other light sources, LED has merits such as long lifetime, pollution free, and high energy efficiency. Lately, due to development of LED with high brightness and capacity, LED, which has been applied in display system only, has applied in the field of lighting system. As power LED for lighting system can be burned out by heat problem, the driving current of power LED has to be controlled below the designed value. In this paper, power LED photovoltaic lighting system, which has the current limitting function, has been described. After photovoltaic power is generated from PV panel. it is charged into a battery. And then, after the charged power is converted to DC24[V] through a boost DC-DC converter, it is supplied to power LED at night. It has been validated by designing and testing of 72[W] power LED lighting system, which includes a PV charger, a boost DC-DC converter and a current limiter for driving power LED.
Keywords
Photovoltaic lighting system; Power LED; Current limiting function;
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