Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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Development of Dimmable Magnetic Ballast for HID-Lamps by Zero Current Switching on SCRs

SCR의 영전류 스위칭에 의한 HID 램프용 조도제어형 자기식 안정기 개발

  • 이현진 (강원대학교 전기전자공학) ;
  • 유재웅 (한국폴리텍대학 춘천캠퍼스 전기과) ;
  • 박종연 (강원대학교 전기전자공학)
  • Received : 2010.07.26
  • Accepted : 2010.10.13
  • Published : 2010.12.31
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Abstract

In this paper, we have proposed a new dimmable magnetic ballast for HID(High Intensity Discharge) lamps consisted of AC switches to variate inductance value by using Silicon Controlled Rectifiers and the isolated zero current detector on inductor. Conventional dimming ballast has used relays or Solid State Relays in AC switches. However, a relay is difficult to zero current switching, because it has long operating time(10[ms]), and price competitiveness of SSR is very low. The proposed AC switches are suitable to switch at zero inductor current and it is accurately detected by using a opto-coupler. SCR is cheaper than SSR, and it is suitable to switch at zero inductor current because SCR is automatically turned off under holding current at no gate signal. Operating principles, simulation results and experimental results of the proposed ballast are described.

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References

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Cited by

  1. Transient Current Control of Two-Stage Electronics Ballast for HID Lamps vol.28, pp.1, 2014, https://doi.org/10.5207/JIEIE.2014.28.1.001