Personnel

FICs - Prof. Philip K. T. Mok and Prof. Wing-Hung Ki

Description

Energy saving is one of the important issues discussed in the world today. Fluorescent lamps are known to have 5 times higher efficacy than incandescent lamps. Therefore, compact fluorescent lamps should be a very appropriate choice as an alternative to the incandescent light bulb for energy saving. However, the compact fluorescent lamp has two main problems. The first one is that it lacks dimming capability. This puts the compact fluorescent lamp in an unfavorable position for decoration purposes compared with the halogen light and incadescent bulb. Another problem is the low power factorof the lamp ballast, especially the magnetic ballast. This will generate harmonic distortion into the power line and thus increase the loading of the electrical power station in the community. In this project, a suitable dimming control scheme for the compact fluorescent lamp will be developed and a high power factor correction front end circuit will also be designed to have high power factor and low high frequency harmonic distortion to the main power line. The integration of the dimming control and power factor corrector into a single controller IC will also be investigated.

Source: RGC | ITF