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Simplified thermal-electric dynamic model for HID lamps

Simplified thermal-electric dynamic model for HID lamps,10.1109/PESC.2004.1355261,Rene Osorio,Mario Ponce,M. A. O. Centro

Simplified thermal-electric dynamic model for HID lamps   (Citations: 14)
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This paper presents a dynamic model for HID lamps; the model is based on thermal and electric principles. The model considers that the conductivity of the plasma inside the lamp depends of the heat flow from the inside of the lamp to outside. The heat flow of the lamp has an analogy with electrical circuits with resistors and capacitors. This capacitors and resistors represent the thermal behavior of the lamp and can be used to predict the dynamic of the lamp and their stability. This model is used to stabilize the lamp when it is fed with square waveforms. Furthermore, this model can be implemented in software as "PSpice", "Simnon" or "MATLAB".
Published in 2004.
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    • ... high luminous efficacy, good color rendering, long life, and compact size in contrast to fluorescent lamps [1, 2]. Therefore, HID lamps are widely used to satisfy high-quality lighting applications and commercial lighting systems, such as projectors and automotive headlights [3, 4]. Due to the negative incremental impedance characteristics of the gasdischarging lamps, the MH lamp requires an extra ballast circuit for stable operation [ ...

    C. K. Chianget al. A novel two-stage electronic ballast for MH lamp with frequency modula...

    • ...Due to the negative incremental impedance of the HID lamp [2, 3], a ballast is required...

    W. C. Kuoet al. Design and analysis of a novel two-stage electronic ballast for HID la...

    • ...Nowadays, there are different models that can predict the dynamic behavior of the lamp [1],[3],[4],[5],[6],[7],[8] . Such models are usually based on thermal and step response models...
    • ...In present paper, experimental results varying the ballast impedance are developed in order to evaluate the gas constant, because this constant is usually obtained in a static point [4],[5],[7].The aim of this work is to demonstrate that the gas constant obtained by the lamp current is the main constant of the system and also is a good approximation in all the range of the stabilizer resistance...
    • ...The study of the lamp time constants in this work lies on the study presented in [4]...
    • ...According to [4] a lamp has three thermal constants and consequently three dynamics...
    • ...The data obtained from 70 W metal halide HID lamp (CDM-R70W/830, Philips) are [4]:...
    • ...According to the reference [4], the value of the thermal capacitances is obtained using the following equations:...
    • ...The time constant of the lamp is used for its implementation in small signal [1],[3],[4],[5],[6],[7] and great signal models (PSpice model) [3],[5],[6]...

    M. A. Juarezet al. Dynamic study of the time constant in High intensity discharge lam

    • ...An essential part of the study of lighting systems resides on the analysis of the lampballast system interaction as a function of the stability [1],[2],[3],[4],[5]...
    • ...Different test based the step response have been employed to obtain the dynamic characteristics of the lamp [1],[2],[3],[4]...
    • ...In the node 4 the instantaneus current value is obtained throught H1 and RA. In the node 6 the instanteneous current to the square is obtained through E2, Rτ and Ct. Rτ·Cτ could be considering like integrator [4], so if get in one time variant signal inside Rτ·Cτ network then get out its equivalent average...

    M. A. Juarezet al. A Dynamic Lamp Model to Determine Stability of a Lamp-Ballast System

    • ...An essential part of the study of lighting systems resides on the analysis of the lamp-ballast system interaction as a function of the stability [1],[2],[3],[4],[5]...
    • ...Different test based the step response have been employed to obtain the dynamic characteristics of the lamp in [1],[2],[3],[4]...

    M. A. Juarezet al. Analysis and design of model based on step response for the stability ...

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