Title :
A novel complex modulation method for the metal halide lamp ballast
Author :
Oh, Duk Jin ; Kim, Hee Jun ; Oh, Won Seok ; Cho, Kyu Min
Author_Institution :
Dept. of Electr. Eng., Hanyang Univ., Ansan, South Korea
Abstract :
This paper presents a novel complex modulation method for the metal halide lamp ballast. The proposed modulation method, which has a modulating signal of swept complex frequency, can eliminate the acoustic resonance more effectively than the conventional modulation method, which has a modulating signal of constant frequency. For the purpose of future application specific integrated circuits (ASIC), the proposed ballast controller has been designed only with erasable programmable logic devices (EPLDs), but without a microprocessor. In this paper, detailed modulation schemes are described and experimental results on the prototype 150 W metal halide lamp ballast with the proposed modulation method are discussed.
Keywords :
application specific integrated circuits; lamp accessories; metal vapour lamps; modulation; programmable logic devices; 150 W; ASIC; acoustic resonance; application specific integrated circuits; constant frequency signal modulation; erasable programmable logic devices; metal halide lamp ballast; modulation method; swept complex frequency; Acoustic devices; Acoustic emission; Application specific integrated circuits; Digital modulation; Electronic ballasts; Frequency modulation; High intensity discharge lamps; Programmable logic devices; Resonance; Shape;
Conference_Titel :
IECON 02 [Industrial Electronics Society, IEEE 2002 28th Annual Conference of the]
Print_ISBN :
0-7803-7474-6
DOI :
10.1109/IECON.2002.1187538
