Abstract

 This paper presents a new family of high power factor for electronic ballasts applied to fluorescent lamps. From the proposed structures, two topologies are presented without the ballast inductor, because the boost inductor, in addition to performing power factor correction, also has the function of limiting and stabilizing the lamp current, besides making it to start. The main characteristics of these topologies are the reduction in the production costs owing to fewer components, the low harmonic distortion in the input current, the lower current in the switches, and the lower DC bus voltage. To verify the proposed design methodology and to provide the condition of unity power factor and stabilization of the lamp current, the experimental results of one prototype is presented.
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