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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The Ballast for HID Lamps of Preventing the Overvoltage with a Long Distance Resonant Ignition

원거리 공진 기동시 과전압 방지 HID 안정기

  • Lee, Woo-Cheol (Hankyong National University Dept. of Electrical Electronic & Control Engineering, Institute for information technology convergence)
  • Received : 2014.10.20
  • Accepted : 2014.11.17
  • Published : 2015.01.31
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Abstract

The electronic ballast for HID lamps needs to ignite lamps even though the length from the ballast to lamp is far away. Therefore, it needs to do the research on a resonant ignition to turn on the HID lamps because the reduction of ignition voltage is not much depending on the distance. However, the parasitic capacitance is increased depending the length of the cable, and it affects the resonant frequency. The ignitor voltage can be increased drastically under the resonant ignition through frequency sweep, and it is the main reason of blowing up. Therefore, the clamping diode is proposed to suppress the voltage of the primary winding during resonant ignition.

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References

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