Highly Efficient Metal Halide HID Systems With Acoustically Stabilized Convection

Stockwald, K.; Kaestle, Herbert; Ernst, Herbert

doi:10.1109/tia.2013.2271271

Cited by 7 publications

(3 citation statements)

References 10 publications

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“…The laser Doppler anemometry enables such measurements, but requires special lamp types with a transparent arc tube material and, therefore, necessitates a simulation model with a different geometry and adjusted transport coefficients. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]…”

Section: Discussionmentioning

confidence: 99%

Experiment synthesis and characterization of acoustic instabilities in high intensity discharge

AMER¹,

HAMOUDA²,

Shwieger³

2021

IJBSBE

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Section: Discussionmentioning

confidence: 99%

Experiment synthesis and characterization of acoustic instabilities in high intensity discharge

AMER¹,

HAMOUDA²,

Shwieger³

2021

IJBSBE

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“…M ETAL halide (MH) lamp is one of the most compact high-performance light sources [1]. Because of their good color rendering index (CRI) and high luminous efficiency (>80 lm/W), MH lamps are often preferred in locations where color and efficiency are important, such as supermarkets, gymnasiums, ice rinks, and sporting arenas.…”

Section: Introductionmentioning

confidence: 99%

Acoustic Resonance Detection Using Statistical Methods of Voltage Envelope Characterization in Metal Halide Lamps

Fang

Dupuis

Durrieu

et al. 2017

IEEE Trans. on Ind. Applicat.

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Acoustic resonance (AR) phenomenon occurs in metal halide lamps and can cause light flicker, lamp arc bending and rotation, lamp extinction, and in the worst case, arc tube explosion. This study takes place in the context of developing electronic ballasts with robust AR detection and avoidance mechanisms. To this end, a lock-in amplifier is used to measure and characterize lamp voltage root mean square (rms) short-term fluctuations. Statistical criteria based on the standard deviation of this rms value are proposed to assess AR presence and classify its severity. A set of metal halide lamps from different manufacturers and with different powers were tested. The average electrical power and AR level are controlled by adjusting the lamp operating frequency of highfrequency electronic ballast. The proposed criteria enable classifying healthy (without AR) and faulty (with AR) cases based upon either a two-dimensional plane or a boxplot. Regardless of lamp operating power, the results from this study show that the voltage rms variations and the defined criteria are significantly correlated with AR level.

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“…Thanks to better color rendering index (CRI), MH lamps are widely used in locations where color is important, such as shops, factories, supermarkets, gymnasiums and so on 1) . However, due to the negative impedance 2) of MH lamps, accompanying ballasts are needed.…”

mentioning

confidence: 99%

A Simple High-Sensitivity Acoustic Resonance Detection Method for Metal Halide Lamps

Fang

Dupuis

Durrieu

et al. 2018

JSTL

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To detect acoustic resonance (AR) in metal halide (MH) lamps, a simple high-sensitivity method with a multiplier detector is presented in this paper. Voltage envelope variations are measured to evaluate whether AR occurs in MH lamps. The study is focused on improving the sensitivity of an AR detection method. Several manufacturers MH lamps are tested in our experiment. In addition, the proposed method is compared to another voltage envelope detection method evaluating by a lock-in amplifier with high sensitivity and detection results are analyzed by statistical methods. The results show that the proposed circuit can provide similar sensitivity as the expensive lock-in amplifier to detect AR phenomena and the AR-free and the slight AR level can be easily distinguished.

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Highly Efficient Metal Halide HID Systems With Acoustically Stabilized Convection

Cited by 7 publications

References 10 publications

Experiment synthesis and characterization of acoustic instabilities in high intensity discharge

Experiment synthesis and characterization of acoustic instabilities in high intensity discharge

Acoustic Resonance Detection Using Statistical Methods of Voltage Envelope Characterization in Metal Halide Lamps

A Simple High-Sensitivity Acoustic Resonance Detection Method for Metal Halide Lamps

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