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http://dx.doi.org/10.14775/ksmpe.2015.14.6.129

Development of LED Module Control-based PWM Current for Control of Heat-dissipation  

Lee, Seung-Hyun (DOsys CO. LTD.)
Moon, Han Joo (School of Biomedical Engineering, Korea Univ.)
Hue, Seong-bum (Department of Mechanical System Engineering, Kumoh institute of Tech)
Choi, Seong-Dae (Department of Mechanical System Engineering, Kumoh institute of Tech)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.14, no.6, 2015 , pp. 129-135 More about this Journal
Abstract
This paper shows significant methods that improve the lifespan of LED modules as well as efficiently using an aluminum heat-sink for LED module in high power. It proposes a method that raises stability and lifespan to protect LED modules and the power unit when the LED module has been used for a long hours at high temperatures. During the research, we applied a method of pulse-width modulation (PWM) in order to prevent the phenomenon that the entire power of a system is turned off and the lifespan is reduced when the LED nodule reacts to the high temperatures. To protect the LED module and SMPS based on high efficiency, a temperature sensor is attached underneath the circuit board and the sensor measures the temperature of circuit board when the LED module is powered on. The electrical power connected to SMPS is controlled by PWM when the temperature of the LED module reaches a particular temperature.
Keywords
Pulse-width Modulation(PWM); Heat-sink; Switched Mode Power Supply(SMPS); Heat-dissipation; Asymmetric Flood-Light Module;
Citations & Related Records
Times Cited By KSCI : 8  (Citation Analysis)
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