Electronic Ballast Design for Fluorescent Lamps with High Power Factor

Fluorescent lamps are used as one of the most important sources of light in residential and commercial applications. A method to increase the power factor in electronic ballasts is proposed in this paper. For the power factor correction circuit, the amplification-based switching method is used, which increases the power factor and provides the DC voltage for starting the half-bridge inverter circuit. Finally, the laboratory sample of the circuit is made at a voltage of ۱۱۰ V with a power factor of ۰.۹۹۶. This circuit has an efficiency of ۹۴.۷% and a total harmonic distortion less than ۵%. In addition, the pressure on the lamp at the moment of commissioning is reduced, which increases the life of the lamp.

Keywords:

power factor , Total harmonic distortion , fluorescent lamp