Design and Implementation of LED Lighting System for Plant Growth Chamber Applications

• Main Authors: Chih Yang Hsu, 徐至揚
• Other Authors: S. Y. Tseng
• Format: Others
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/33515443595822946465

碩士 === 長庚大學 === 電機工程學系 === 101 === This thesis presents design and implementation of an LED lighting system with an energy recovery circuit. The proposed lighting system consists of an LED driving circuit and LED power supply. In the LED power supply, flyback converter is adopted to generate the desired voltage and current of LEDs. Moreover, the LED driving circuit adopts single chip ( CY8C27443 ) and PWM IC with constant off time ( NCL30105 ) associated with the energy recovery circuit to acquire signals of LEDs, which are displayed on PC. In order to increase the reliability of the proposed lighting system, overvoltage and overcurrent protections are adopted. Finally, a prototype of the LED lighting system with the maximum 30VDC, maximum current 40mA and energy recovery circuit has implemented to verify the feasibility of the proposed lighting system.