Title :
Acoustic Resonance Rejection via Voltage Modulation Method for HPS Lamps
Author :
Morais, L.M.F. ; Donoso-Garcia, P.F. ; Seleme, S.I., Jr. ; Cortizo, P.C. ; Silva, F.N.A.
Author_Institution :
Univ. Fed. de Minas Gerais, Belo Horizonte
Abstract :
A voltage modulation method in order to prevent acoustic resonance (AR) in HPS lamps is presented. Two voltage modulation techniques via PWM inverter are proposed. The first one injects harmonic components in the lamp voltage reference. The second one consist of high frequency voltage modulated by a low frequency waveform. These techniques allow the control of crest factor other than rejecting the AR.
Keywords :
PWM invertors; acoustic resonance; lamps; HPS lamps; PWM inverter; acoustic resonance rejection; harmonic components; high pressure sodium lamps; lamp voltage reference; low frequency waveform; voltage modulation method; Acoustic emission; Acoustic waves; Electromagnetic interference; Frequency modulation; Lamps; Optical modulation; Power harmonic filters; Resonance; Switches; Voltage; Acoustic resonance avoidance; HPS lamps; PWM; harmonics injection; modulation low frequency;
Conference_Titel :
Industrial Electronics, 2007. ISIE 2007. IEEE International Symposium on
Conference_Location :
Vigo
Print_ISBN :
978-1-4244-0754-5
Electronic_ISBN :
978-1-4244-0755-2
DOI :
10.1109/ISIE.2007.4375092
