Power-quality model based on IGBT dynamic-conduction for non-polluting lighting applications

In this paper, a power-quality model based on dynamic-conduction of the modern switching power devices is presented. The power-quality analysis is needed due to the serious problems by the compact fluorescent lamps (CFL) technology, including generation of poor power-quality and the risks on the human health because the CFL contain mercury. The proposed model utilizes normalized symbolic functions of the current conduction functions defined by closed time intervals, which has been applied to a single-phase AC-DC converter. Also, the total harmonic distortion (THD) is evaluated to demonstrate the improvement of the power quality as a function of the normalized Fourier coefficients. The principle of operation of the single-phase AC-DC converter is presented and the results indicate that power quality would be enhanced using incandescent lamps with lower power consumption.