환형 무전극 형광램프의 자계분포 해석과 광학적 특성에 관한 연구 = The Magnetic Field Distribution Analysis and Optical Characteristics for the Ring-Shaped Electrodeless Fluorescent Lamp

다국어 초록 (Multilingual Abstract)

Recently, the RF inductive discharge or inductively coupled plasma continues to attract growing attention as an effective plasma source in many industrial applications, the best known of which are plasma processing and lighting technology. To the point of lighting sources, the ring-shaped electrodeless fluorescent lamps utilizing an inductively coupled plasma have been objects of interest and research during the last decades, mainly because of their potential for extremely long life, high lamp efficacies, rapid power switching response. In this paper, maxwell 3D finite element analysis program (Ansoft) was used to obtain electromagnetic properties associated with the coil and nearby structures. The electromagnetic emitting properties were presented by 3D simulation software operated at 250 kHz and some specific conditions. The electromagnetic field in the ferrite core was shown to be high and symmetric. An LS-100 luminance meter and a Darsa-2000 spectrum analyzer were used in the experiment. According to data on the lamp tested using high magnetic field ferrite, the optical and thermal wave fields were shown to be high around the ring-shaped electrodeless fluorescent lamp. The optical or light field was high at the center of the bulb rather than around the ferrite core. The light conditions of the bulb were assumed to be complex, depending on the condition of the filler gas, the volume of the bulb, and the frequency of the inverter. Our results have shown coupling between the gas plasma and the field of the light emitted to be nonlinear.

참고문헌 (Reference)

1 구선근, "전구내 Nal 첨가에 의한 무전극 황전등의 특성 변화" 48c (48c): 724-729, 1999

2 추장희, "무전극 황망전등에서 고압 이원자 황 의 자체 역전 효과" 49c : 609-615, 2000

3 이진우, "低壓放電램프의 電氣的 特性 모델링" 1990.

4 I. M. EI-Fayoumi, "The electromagnetic basis of the transformer model for an inductively coupled RF plasma source" 7 : 179-185, 1998

5 V. A Godyak, "Radio Frequency Light Sources" 5 : 3281-3288, 2000

6 G. G Lister, "Power balance in highly loaded fluorescent lamps" 37 : 3099-3106, 2004

7 Brian cook, "New developments and future trends in high-efficiency lighting" 9 : 207-217, 2000

8 J. T. Gudmundsson, "Magnetic induction and plasma impedance in a cylindrical inductive discharge" 6 : 540-550, 1997

9 J. R. Coaton, "Lamp and Lighting" John Wiley & Sons 216-226, 1997

10 Eugen Statnic, "Engineering Limits for Inductively Coupled Fluorescent Electrodeless Lamps" 334-336, 2004

11 D. O, "Electrodeless lamps for lighting" 140 : 465-473, 1993.

12 정수현, "CCFL 구동용 압전 변압기의 특성" 49c : 259-264, 2000

13 V.A. Godyak, "Bright idea : Radio-Frequency Light Source" 42-49, 2002.

14 Y. Aiura, "A study of radial cataphoresis and ion densities in high power density HgAr discharges" 37 : 3093-3098, 2004

15 R. B. Piejak, "A simple analysis of an inductive RF discharge" 1 : 179-186, 1992.

16 Eugen Statnic, "A new approach to the evaluation of the discharge parameters of the electrodeless fluorescent lamps" 515-521, 2004