무전극 램프의 안정기 개발

Development of a Ballast for Electrodeless Fluorescent Lamps

This paper presents a dimming ballast for electrodeless fluorescent lamp. There are two dimming methods for electrodeless lamp, which are frequency change and DC link voltage control. Frequency change for lamp power control is inappropriate because the lamp coefficients are a function of lamp power which is related equivalent lamp impedance and coupling coefficient of the transformer and etc. In this paper, the dimming is achieved by controlling the DC_Link voltage in relation to the lamp power. The DC_Link voltage is controlled by a buck converter. Experimental results of the proposed design method are presented in order to validate the proposed method.