Abstract
Purpose – The purpose of this paper is to present an electrothermal model of the module containing power light emitting diodes (LEDs) situated on a common base. Design/methodology/approach – The electrothermal model of this device, which takes into account both self-heating and mutual thermal coupling between the diodes situated in this module, is described. Findings – The correctness of the presented model is verified experimentally, and a good agreement of the calculated and measured optical and thermal characteristics of the considered module is obtained. Research limitations/implications – The presented model can be used for different structures of the LED module, but electrical inertia in the diodes is omitted. Practical implications – The presented model was used to calculate electrical, thermal and optical waveforms of the module OSPR3XW1 containing three power LED situated on the common base. Originality/value – The presented model takes into account thermal inertia in the considered LED module and its cooling systems with mutual thermal coupling between all the diodes situated in the same module.
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