Initial Investigation into the Energy and Operational Parameters of LED Modules

Abstract

The paper presents an initial investigation into the energy and operational parameters of three LED modules produced by a little-known producer. The paper considers the requirements of Standards TM-21-11 and LM-80-08 applicable in measuring lumen maintenance life, as well as the requirements for temperature in measuring illuminance. The investigation introduces the structural schemes for measuring the efficiency coefficient of the AC/DC converter of LED modules and provides the obtained measurement results. The performed measurements show that the efficiency coefficients of the AC/DC converters of the examined LED modules amount to 52 %±3.5 %. According to the experimental results obtained after measuring illuminance, the established average lumen maintenance life L70 is 2,817 hours.

Measurement of colour coordinates of LEDs used in the automotive exterior lighting

“…The physical properties of the LEDs in time were also tested. It was monitored how their parameters would change, e. g. illumination, current through the LED on operation time, and efficiency coefficient on operation time [17]. A team of authors Qu focused on the LED temperature measurement and aging of installations while using pulse width modulation (PWM) for the red, green, blue (RGB) LED.…”