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Optimization Process Applied in the Thermal and Luminous Design of High Power LED Luminaires

Author

Listed:
  • Jose Luiz F. Barbosa

    (Electrical, Mechanical & Computer Engineering School, Federal University of Goias, Goiania 74605-010, Brazil
    Studies and Researches in Science and Technology Group, Federal Institute of Goias, Goiania 74055-110, Brazil)

  • Antonio P. Coimbra

    (Institute of Systems and Robotics, University of Coimbra, 3030-290 Coimbra, Portugal)

  • Dan Simon

    (Department of Electrical Engineering and Computer, Cleveland State University, Cleveland, OH 44115, USA)

  • Wesley P. Calixto

    (Electrical, Mechanical & Computer Engineering School, Federal University of Goias, Goiania 74605-010, Brazil
    Studies and Researches in Science and Technology Group, Federal Institute of Goias, Goiania 74055-110, Brazil
    Institute of Systems and Robotics, University of Coimbra, 3030-290 Coimbra, Portugal)

Abstract

This work proposes the design of an optimization method for high-power LED luminaires with the introduction of new evaluation metrics. A luminaire geometry computational method is deployed to conduct thermal and optical analysis. This current effort novels by designing a tool that enables the analysis of uniformity for individual luminaire over the target plane in accordance with international regulatory standards. Additionally, adequate thermal management is conducted to guarantee nominal operation standard values determined by LED vendors. The results of this optimization method present luminaire models with different geometries that allow the stabilization of the temperature within the safety and uniform illuminance distribution thresholds. The resulting solution proposes the design of a 2 × 2 HP-LED rectangular luminaire. During simulations, the temperature of the LED reaches a maximum value of 73.9 ∘ C in a steady state with a uniform index of 0.228 for its individual luminaire. The overall uniform index identified for two separate and adjacent luminaire points in a pedestrian walk is 0.5413 with a minimal illuminance of 36.95 lx, maximum illuminance of 93.65 lx and average illuminance of 68.27 lx. Overall, we conclude that the currently adopted metric, which takes into consideration only the ratio between the minimum and the average illuminance, is not efficient and it cannot distinguish different luminaire geometry standards according to their uniform illuminance distribution. The metric proposed and designed in this work is capable of evaluating illuminance and thermal threshold criteria, as well as classifying different sorts of luminaries.

Suggested Citation

  • Jose Luiz F. Barbosa & Antonio P. Coimbra & Dan Simon & Wesley P. Calixto, 2022. "Optimization Process Applied in the Thermal and Luminous Design of High Power LED Luminaires," Energies, MDPI, vol. 15(20), pages 1-28, October.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:20:p:7679-:d:945757
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    References listed on IDEAS

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    1. Jose Luiz F. Barbosa & Dan Simon & Wesley P. Calixto, 2017. "Design Optimization of a High Power LED Matrix Luminaire," Energies, MDPI, vol. 10(5), pages 1-18, May.
    2. H. Christopher Frey & Sumeet R. Patil, 2002. "Identification and Review of Sensitivity Analysis Methods," Risk Analysis, John Wiley & Sons, vol. 22(3), pages 553-578, June.
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