Injection of adjacent frequency signals for acoustic resonance avoidance in HPS lamp

Chhun, Labo; Maussion, Pascal; Bhosle, Sounil; Zissis, Georges; Durrieu, Olivier

doi:10.1109/iecon.2009.5415166

Cited by 2 publications

(1 citation statement)

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“…Revised on 16/01/2013 and on 25/02/2013. Accepted for publication in 25/02/2013 to Special Session by recommendation he Editor Ricardo Nederson do Prado whenever the acoustic resonance is detected which implies in methods for detecting it [10], [11], [12]; third, even when operating the ballast in frequencies where acoustic resonance occurs, to avoid exciting it through spreading the frequency spectrum [13]- [21], [28]. Each and every one of these alternatives has its advantages and drawbacks as will be pointed out further.…”

Section: Introductionmentioning

confidence: 99%

Harmonics Injection in Hps Electronic Ballast With Modulation Index Control

Morais¹,

Donoso-Garcia²,

Júnior³

et al. 2013

Eletrônica de Potência

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The modulation index control is used in this work to control the lamp power supply permitting the removal of the output transformer out of the inverterresonant filter setup. The Acoustic resonance in HPS lamps can be avoided by using a controlled PWM inverter and third harmonic injection.Experimental and simulation results are shown for the control of the inverter power subject to variation in the input voltage. Results for different DC bus voltages are also provided which attest the transformer removal and avoid the acoustic resonance with different modulation indexes. An ignitor for high-intensity discharge lamps, based on forced oscillation via an external periodic voltage square wave, supplied by a digitally controlled inverter, is also presented. The crest factor of the current can also be reduced by this approach.1

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