Title :
Investigation on methods of eliminating acoustic resonance in small wattage high-intensity-discharge (HID) lamps
Author :
Yan, Wei ; Ho, Y.K.E. ; Hui, S.Y.R.
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong kong, China
Abstract :
In this paper, a detailed theoretical prediction and experimental verification of acoustic resonance frequency distribution in a small wattage metal-halide (MH) lamp is presented. Extensive experiments have been conducted on 35 W MH lamps to investigate different methods for avoiding acoustic resonance. The results indicate that a randomized switching scheme cannot eliminate arc instabilities caused by acoustic resonances in small wattage MH lamps. A stable arc can be obtained when the lamp is operated above the highest acoustic resonance frequency
Keywords :
acoustic resonance; arcs (electric); metal vapour lamps; noise abatement; switching; 35 W; HID lamps; acoustic resonance elimination; acoustic resonance frequency distribution; arc instabilities; eigenfrequencies; high-intensity-discharge lamps; metal-halide lamp; randomized switching scheme; stable arc; Acoustic distortion; Acoustical engineering; Electronic ballasts; Equations; High intensity discharge lamps; Light sources; Resonance; Resonant frequency; Shape; Thermodynamics;
Conference_Titel :
Industry Applications Conference, 2000. Conference Record of the 2000 IEEE
Conference_Location :
Rome
Print_ISBN :
0-7803-6401-5
DOI :
10.1109/IAS.2000.882654
