DocumentCode :
3175523
Title :
Design and performance of digital ballast for HPS lamps
Author :
Weiqiang, Zhang ; Dianguo, Xu ; Lee, Chi-Hwan
Author_Institution :
Dept. of Electr. Eng., Harbin Inst. of Technol., China
Volume :
2
fYear :
2003
fDate :
9-13 Feb. 2003
Firstpage :
1205
Abstract :
This paper presents the design and performance of digital ballast for HPS lamps, which employs a 8-bit microprocessor to improve the starting technique and operate HPS lamp at rated power over the service life. The system offers the capability of dimming lamp from 100 % to 50 % power by changing the switching frequency of the inverter. It is also found that, under present experimental conditions, the lamp is free acoustic frequency and resistive operated at high frequency. The 3.2 kV ignition pulse is sufficient for a cold 250 W HPS lamp startup. Experimental measurements have shown the feasibility of the digital ballast with the proposed control strategies.
Keywords :
electric ignition; invertors; lamp accessories; lighting control; metal vapour lamps; power control; switching convertors; 250 W; 3.2 kV; 8-bit microprocessor; HPS lamp; acoustic frequency; control strategy; digital ballast design; digital ballast performance; ignition pulse; inverter switching frequency; lamp dimming capability; lamp starting technique; lighting; rated power; Circuits; Electronic ballasts; Fluorescence; Fluorescent lamps; Frequency; High intensity discharge lamps; Ignition; Microprocessors; Resonance; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2003. APEC '03. Eighteenth Annual IEEE
Conference_Location :
Miami Beach, FL, USA
Print_ISBN :
0-7803-7768-0
Type :
conf
DOI :
10.1109/APEC.2003.1179369
Filename :
1179369
Link To Document :
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