Small signal characterization of fluorescent lamps in dimmed operation

Diaz, R. E.; Ribas, J.; Calleja, A.J.; Alonso, J.M.; Garcia, J.

doi:10.1109/iecon.2009.5415162

Cited by 9 publications

(6 citation statements)

References 11 publications

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“…7 shows the negative dynamic impedance rd of expression (2). As it can be seen, this parameter is strongly affected by the ambient temperature.…”

Section: Double-pole Double-zero Small-signal Modelmentioning

confidence: 96%

“…Using the characterization procedure described in [2] and [5], an Osram TIE 26W compact fluorescent lamp was characterized at different power levels at four different ambient temperatures. Several polynomials where proposed to approximate the zeroes and poles of expression (2) as a function of arc power.…”

Section: Double-pole Double-zero Small-signal Modelmentioning

confidence: 99%

“…Reference [2] described a power dependent model based on the single-pole single-zero model described in [1]. However, the accuracy of this approach at low power levels is not high, thus references [3] [4] introduced a double-pole double-zero model.…”

Section: Introductionmentioning

confidence: 99%

“…In prior literature, several dynamic lamp models were used to determine the stability of the lamp ballast system [1] [2][3] [4]. In reference [I], a simple single-pole single-zero transfer function was proposed to model the small-signal dynamic behavior of fluorescent lamps operating at nominal power.…”

Section: Introductionmentioning

confidence: 99%

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Temperature effects on the small-signal characteristics of fluorescent lamps

Ribas

Diaz

Calleja

et al. 2012

IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society

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One of the main concerns when designing dimming ballasts is the stability range that can be obtained in practical designs. Some applications require the output power to be reduced below 20% of its nominal value.The small-signal model of fluorescent lamps has proven to be a useful tool to describe the dynamic behavior of fluorescent lamps. These models can be used to analyze the lamp-ballast interaction and determine the stable control range.However, most of the small signal models that can be found in prior literature do not take into account the effect of the ambient temperature.In present work, the effect of the ambient temperature in the small signal characteristics of a compact fluorescent lamp is described. A temperature and power dependent double-pole double-zero model is proposed. This model is used to analyze the effect of the temperature in the stability range in a half-bridge resonant ballast.

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“…7 shows the negative dynamic impedance rd of expression (2). As it can be seen, this parameter is strongly affected by the ambient temperature.…”

Section: Double-pole Double-zero Small-signal Modelmentioning

confidence: 96%

Section: Double-pole Double-zero Small-signal Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Temperature effects on the small-signal characteristics of fluorescent lamps

Ribas

Diaz

Calleja

et al. 2012

IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society

Self Cite

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“…In a recent paper [11], the single-pole single-zero model was used to approximate the dynamic behavior of a fluorescent lamp at different power levels. However, in this case, lamp electrodes were in short circuit, thus reducing the applicability of the proposed model to instant-start dimming ballasts.…”

Section: Introductionmentioning

confidence: 99%

Power-Dependent Small-Signal Model for Fluorescent Lamps Based on a Double-Pole Double-Zero Transfer Function

Diaz

Ribas

Calleja

et al. 2013

IEEE Trans. on Ind. Applicat.

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In the prior literature, the small-signal incremental impedance of fluorescent lamps has been characterized using a single-pole single-zero transfer function. This transfer function provides a good estimation of the lamp dynamics at rated power. However, when this model is used at low power levels, the accuracy is severely reduced, particularly at high perturbation frequencies (5-20 kHz). In this paper, a new double-zero double-pole transfer function is used to model the lamp dynamics with great accuracy even at low power levels. The best results have been obtained using a transfer function with two real zeros and a double complex pole. Using a new characterization procedure, the small-signal model of a 26-W compact fluorescent lamp has been obtained. All the terms of the transfer function (static gain, poles, and zeros) have been calculated at different power levels. Different polynomial expressions have been used to approximate these terms as power-dependent functions. The proposed characterization procedure also allows obtaining the equivalent resistance of the electrodes. This feature has been used to measure the effect of the extra heating imposed by IEC 60901 during dimmed operation.

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