Title :
Dimming control and characteristics of high-frequency operated metal halide lamps
Author :
Cao, X. ; Yan, W. ; Hui, S. Y Ron ; Chung, H.
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong, China
Abstract :
Dimming control and characteristics of high-frequency operated metal-halide (MH) lamps are described. Lamp performance based on two ballast topologies is compared. The dimming range and stability control of the MH lamps are addressed. Dimming range from 100% to about 30% has been achieved. It is found that the combination of ballast topology and dimming method can affect the dimming performance.
Keywords :
bridge circuits; frequency control; invertors; lamp accessories; lighting control; metal vapour lamps; resonant power convertors; voltage control; 150 W; HID lamp arc characteristics; LC resonant tank; LCL resonant circuit; ballast topologies; dimming control; dimming method; dimming performance; electronic ballast circuits; equivalent circuits; frequency control; half-bridge; high-frequency operated metal halide lamps; inverter; stability control; voltage controlled dimming; Circuit topology; Electric variables control; Electronic ballasts; Fluorescent lamps; Frequency control; High intensity discharge lamps; RLC circuits; Resonance; Switching frequency; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 2002. pesc 02. 2002 IEEE 33rd Annual
Print_ISBN :
0-7803-7262-X
DOI :
10.1109/PSEC.2002.1022331
