TY - GEN
T1 - A study on the performance characteristics of light emitting diodes from reliability prospective
AU - Lokesh, J.
AU - Kini, Savitha G.
AU - Mahesha, M. G.
AU - Padmasali, Anjan N.
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - The high-power phosphor-converted white LEDs (PC-WLED) are emerging in their use in general applications because of their high luminous efficacy and wide range of controllability. However, it is fact that the temperature and current significantly impact LEDs photometric and colorimetric characteristics. LED manufacturers catalogs do not include LEDs performance characteristics under real operating profiles. It is essential to know that manufacturers make LEDs with a wide range of correlated Color Temperature (CCT), Color Rendering Index (CRI), and various power ranges. Importantly the LED manufacturers produces the high power LEDs of the same power with different current ratings. Thus, the luminaire manufacturers have wide options of choosing LEDs for Luminaires. However LED luminaire designers are more concerned about the reliability under real operating profiles which is lacking in manufacturer information. The study presents a comparative study on commercially available warm and cool white LEDs of the same power with different current ratings in market Ten samples in each category are used for the study. Both photometric and colorimetric characteristics of LEDs are measured at different driving currents and cold plate temperatures. The results are analyzed and compared their key performance indicators which are contributing to the reliability of LEDs.
AB - The high-power phosphor-converted white LEDs (PC-WLED) are emerging in their use in general applications because of their high luminous efficacy and wide range of controllability. However, it is fact that the temperature and current significantly impact LEDs photometric and colorimetric characteristics. LED manufacturers catalogs do not include LEDs performance characteristics under real operating profiles. It is essential to know that manufacturers make LEDs with a wide range of correlated Color Temperature (CCT), Color Rendering Index (CRI), and various power ranges. Importantly the LED manufacturers produces the high power LEDs of the same power with different current ratings. Thus, the luminaire manufacturers have wide options of choosing LEDs for Luminaires. However LED luminaire designers are more concerned about the reliability under real operating profiles which is lacking in manufacturer information. The study presents a comparative study on commercially available warm and cool white LEDs of the same power with different current ratings in market Ten samples in each category are used for the study. Both photometric and colorimetric characteristics of LEDs are measured at different driving currents and cold plate temperatures. The results are analyzed and compared their key performance indicators which are contributing to the reliability of LEDs.
UR - https://www.scopus.com/pages/publications/85127583438
UR - https://www.scopus.com/pages/publications/85127583438#tab=citedBy
U2 - 10.1109/STPEC52385.2021.9718666
DO - 10.1109/STPEC52385.2021.9718666
M3 - Conference contribution
AN - SCOPUS:85127583438
T3 - Proceedings of 2021 IEEE 2nd International Conference on Smart Technologies for Power, Energy and Control, STPEC 2021
BT - Proceedings of 2021 IEEE 2nd International Conference on Smart Technologies for Power, Energy and Control, STPEC 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2nd IEEE International Conference on Smart Technologies for Power, Energy and Control, STPEC 2021
Y2 - 19 December 2021 through 22 December 2021
ER -