Simulation and Analysis of Electric Control System for Metal Halide High Intensity Discharge Lamps

Abstract — Metal Halide HID lamps are becoming popular because of its high efficacy. The operating characteristic of Metal Halide (MH) HID lamps is complex as it has several stage of operation. The objective of this paper is to design an electric control system for metal halide high intensity discharge (HID) lamps using half bridge inverter. The LCC resonant mode is used to provide the sufficient voltage and current to the MH lamp during its ignition and normal running condition. An adaptive control method is used to regulate the lamp power. A close loop current control method is used. In this close loop Type-3 regulator is used as a compensator. The variation in lamp power with and without loop is discussed. The stability of the close loop is also analysed. PSIM Simulation Software is used to do this analysis