A high efficient driver design for LED lighting system

Abstract

As a result of changing in illumination systems, Light Emitting Diode (LED) lighting system has been widely used instead of traditional illumination system. The importance of LED lighting has been increasing day by day because of its less energy consumption, low production cost, long life and multiplicity of control algorithm. In recently, several methods have been used for increasing efficiency of LED lighting system. In this study, a LED lighting system has designed for a park illumination. The ratio of daylight has been detected with a central sensor. This value has been converted into numerical data and sent illumination pillars that placed into the park with Radio Frequency (RF). Pulse Width Modulation (PWM) signal required for buck converter put on the pillars as LED driver is generated with regard to the numerical data converted from the ratio of daylight. Thus, brightness of LED has been calibrated and during the pass of day-night, soft light pass has been provided.