Title :
Electronic power supplies for high-density discharge (HID) lamps
Author :
Harry, J.E. ; Hoare, D.W.
fDate :
10/1/2000 12:00:00 AM
Abstract :
The principal methods of electronically controlling the power to high-intensity discharge lamps is summarised. These include phase shift control, resonant inverters and variable pulse width control, using half- or full-bridge configurations depending on the power capability of the switching elements. Control of power is possible by varying the pulse width, varying the frequency or both. Varying the frequency is less demanding on the switching characteristics of the devices. Both IGBTs and MOSFETs can be used, however the power loss using IGBTs is generally lower for a given power at lower frequencies. Powers above 10 kW are readily achievable by these means
Keywords :
MOSFET; bridge circuits; discharge lamps; insulated gate bipolar transistors; invertors; lamp accessories; lighting control; phase control; power control; power supplies to apparatus; resonant power convertors; switching circuits; 10 kW; IGBT; MOSFET; electronic power supplies; full-bridge configuration; half-bridge configuration; high-density discharge lamps; high-intensity discharge lamps; power capability; power control; power loss; resonant inverters; switching characteristics; variable pulse width control;
Journal_Title :
Engineering Science and Education Journal
DOI :
10.1049/esej:20000503
