Design of optimum controller for electronic control system of Metal Halide-High Intensity Discharge Lamps

Energy crisis has now become a global concern. Research at various levels is on to save energy in almost every field. Artificial lighting is one of the areas where tremendous amount of energy is consumed. Metal Halide (MH) High Intensity Discharge (HID) Lamps are very famous in artificial lighting system because of its energy saving features as these lamps have very high luminous efficacy. The operation of MH lamps is complex and with the ageing affects the impedance of these lamp changes. Due to this change MH lamps draw power more than its rated value. It may lead to safety concerns for the end user. To overcome these complexities electronic control systems (ECS) is required for controlling its operation. ECS is power electronics based circuit, designed to fulfill the electrical characteristics of MH lamps. The controller used in ECS plays key role to identify the MH lamp stage and regulate the lamp power. In this paper the design of controller along with half bridge inverter and LCC resonant is studied. The simulation is done using PSIM simulation software.