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In this paper a study about LED (light-emitting diode) luminous flux performance using an electrothermal methodology is presented. The objective is to evaluate and quantify the flicker given out by LEDs supplied by constant current with superposed sinusoidal ripples, which is commonly found in off-line LED drivers. Mathematical analysis and theoretical predictions are made taking into account the...
This paper presents the electrothermal modeling and control of a light emitting diodes (LEDs) system. The system consists on a Buck-Boost converter operating as the current driver and LEDs distributed along to the heatsink composing the luminaire. The model contemplates electric characteristics of the Buck-Boost converter and thermal characteristics of the luminaire. A control system is developed...
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