FIELD: control systems.
SUBSTANCE: invention relates to power supply organization control systems and, in particular, to lighting power control systems. Luminaire with stabilized light flux during whole service life includes power corrector; a control module which calculates the luminaire operating time and transmits the LED current control signal; current dimmer driver, which generates current through LEDs and includes pulse-width modulator for adjustment of output current; light-emitting diode cluster, comprising a light-emitting diode unit combining separate light-emitting diodes, wherein control module provides smooth increase of output current according to linear law from minimum value at the beginning of service life to its maximum value at the end of this period by formula
where Iout – output current driver current, Iin – the initial output current when first turned on LEDs, Ksaf – the safety factor, Top – luminaire operating time from the moment of first connection, Tlife – the life of the luminaire.
EFFECT: increased durability of LED luminaires, reduced power consumption.
1 cl, 4 dwg
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