Detection of acoustic resonance in metal halide lamps

Author

Hsieh, Yao C. ; Moo, Chin S. ; Chen, Hsien W. ; Soong, Ming J.

Author_Institution

Power Electron. Lab., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan

Volume

2

fYear

2001

fDate

2001

Firstpage

881

Abstract

To understand the occurrence of acoustic resonance in metal halide lamps is essential for an engineer to design a high-frequency electronic ballast. This paper proposes a simple method by measuring the lamp voltage for detecting the acoustic instability instead of observing the lamp arc by human eyes. The standard deviation in the lamp voltage is used as an index to determine the occurrence of acoustic resonance. With the index, the degree of the lamp arc instability can easily be specified. Experiments are carried out on various 70 W lamps to inspect the influence of the lamp type, the used hours, and the operating power on the frequency spectra of acoustic resonance

Keywords

acoustic resonance; acoustic variables measurement; lamp accessories; metal vapour lamps; voltage measurement; 70 W; acoustic instability detection; acoustic resonance detection; frequency spectra; high-frequency electronic ballast; lamp arc instability; lamp voltage measurement; metal halide lamps; Acoustic measurements; Acoustic signal detection; Acoustical engineering; Design engineering; Electronic ballasts; Eyes; Humans; Lamps; Resonance; Voltage measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, 2001. Proceedings. ISIE 2001. IEEE International Symposium on

Conference_Location

Pusan

Print_ISBN

0-7803-7090-2

Type

conf

DOI

10.1109/ISIE.2001.931584

Filename

931584