Title :
Design and performance of an electronic ballast for high pressure sodium (HPS) lamps
Author :
Ben-yaakov, Sam ; Gulko, Michael
Author_Institution :
Dept. of Electr. & Comput. Eng., Ben-Gurion Univ. of the Negev, Beer-Sheva, Israel
Abstract :
Design requirement and performance evaluation were carried out on an experimental electronic ballast for High Pressure Sodium (HPS) lamp. The ballast included a high voltage ignitor and dimming capability. It was used to drive and examine the high frequency characteristics of commercial HPS lamp (NAV-T 150 W (SON-T), OSRAM). The experimental results reveal that for the frequency range of this study (27 to 75 kHz), the lamp is free of the acoustic resonance problem. It was also found that for the present experimental conditions, the lamp is purely resistive and that the resistance is practically independent of the power level and operating frequency. The lamp exhibited stable operation over a very large dimming range, down to about 7% of nominal power. The 2.8 kV ignition pulse was found to be sufficient for both cold and hot start up under the proposed operating conditions.
Keywords :
brightness; invertors; lamp accessories; metal vapour lamps; sodium; 2.8 kV; 27 to 75 kHz; NAV-T; Na; OSRAM; SON-T; cold start-up; dimming capability; electronic ballast; high frequency characteristics; high pressure sodium lamps; high voltage ignitor; hot start-up; operating conditions; performance evaluation; purely resistive characteristics; Electric variables; Electronic ballasts; Fluorescent lamps; Frequency; High intensity discharge lamps; Ignition; Inverters; Magnetohydrodynamics; Resonance; Zero voltage switching;
Conference_Titel :
Electrical and Electronics Engineers in Israel, 1995., Eighteenth Convention of
Conference_Location :
Tel Aviv, Israel
Print_ISBN :
0-7803-2498-6
DOI :
10.1109/EEIS.1995.514194
