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http://dx.doi.org/10.5207/JIEIE.2011.25.5.007

Design of New LED Operation Drive Using Compensating Circuit for Transformed Voltage  

Han, Man-Seung (전남대학교 전기공학과)
Lee, Yong-Jae (전남대학교 대학원 전기공학과)
Park, Sung-Jun (전남대학교 전기공학과)
Lee, Sang-Hun (한국승강기대학 승강기 전기설계과)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.25, no.5, 2011 , pp. 7-14 More about this Journal
Abstract
Currently high power Light Emitting Diode (LED) is in the limelight due to its characteristics of long durability, low maintenance costs, and high efficiency. Furthermore, it does not emit pollutants or poisonous gases and is a light source not using mercury, so it holds a high status in eco-friendly terms as well. In this paper, we studied a two-stage LED power drive circuit that can compensate only voltage regulation through LED output current, in order to improve efficiency of LED drive with constant current control in accordance with changes in temperature. The proposed LED drive has an advantage of reducing LED drive's voltage losses by controlling only voltage change of input power, compared with an existing circuit which controls input voltage. The suggested non-insulation compensating circuit for voltage change was verified to have improved efficiency relative to a LED drive using existing DC/DC converter.
Keywords
LED(Light Emitting Diode); Single-Stage; Two-Stage; Non-Insulation Compensating Circuit;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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