Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

An LED Lighting with Varying Color Temperature for Emotional Lighting Systems

감성조명 시스템을 위한 색온도 조정 가능한 LED 조명

  • Liu, Jia (Department of Electronics, Electrical, Control, and Instrumentation Engineering, Hanyang University) ;
  • Kim, Hoon (Department of Electronics, Electrical, Control, and Instrumentation Engineering, Hanyang University) ;
  • Kim, Hee-Jun (Department of Electronics, Electrical, Control, and Instrumentation Engineering, Hanyang University)
  • ;
  • 김훈 (한양대학교 전자전기제어계측공학과) ;
  • 김희준 (한양대학교 전자전기제어계측공학과)
  • Published : 2008.10.31
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Abstract

This paper presents an LED lighting which can control its color temperature. It consists of a power factor correction (PFC) circuit, an LED driver, and an LED color control circuit. The proposed system can adjusts the light intensity to obtain a desired color with independently changeable illuminance. The power factor of the PFC circuit is 98%. The LED driver has 90% efficiency at 300mA output current. The output power of the experimented LED lighting is 150 W. The achieved color temperature range was from 3000K to 7500K, and the illumination one was from 500 lux to 1500 lux.

Keywords