Abstract
The objective of the work is to improve the power factor of the compact fluorescent lamps (CFLs) by reducing the Total Harmonic Distortion (THD). The power factor is improved by using modified electronic ballast with passive valley-fill power factor correction circuit. The proposed single-switch ballast circuit achieves zero current switching and also maximizes the efficiency of the circuit. The experiment is simulated and the results of electronic ballast with and without valley fill circuit are compared and analyzed with the hardware setup.
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