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Journal of the Korean Institute of Illuminating and Electrical Installation Engineers

ISO Journal TitleJ Korean Inst. IIIum. Electr. Install. Eng.
Title Adaptive Current Control of Power LEDs Using Half-Bridge LLC Resonant Converter
Authors Eung-Seok Kim ; Young-Tae Kim
DOI http://dx.doi.org/10.5207/JIEIE.2013.27.4.048
Page pp.48-53
ISSN 1225-1135
Keywords Power LED ; LLC Converter ; Current Control ; Adaptive Control
Abstract In general, the LLC resonant topology consists of three stages as; square wave generator, resonant network, and rectifier network. LLC resonant converter has the time slowly varying parameters. However, the power LEDs as the load of LLC converter can be regarded as fast time varying parameters. In this paper, the mathematical model of half-bridge resonant converter including with the power LEDs is introduced for the current controller design model. Using this controller design model, the parameter adaptive output feedback controller will be designed to control the power LEDs current. In order to show the validities of the proposed model, the parameter adaptive output feedback controller, the experimental investigation will be presented.