Research Article | | Peer-Reviewed

Optimization for Spectral and Power Characteristics of Bicolour LED Driver

Received: 9 August 2024     Accepted: 2 September 2024     Published: 20 September 2024
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Abstract

LED-powered luminaires have the ability to offer cutting-edge features like temperature adjustment and color management. Color shift creates discomfort in human eyes. So it is essential to design a LED driver which will precisely control the color parameters of the LED driver. Precise control of color parameters like CRI, CCT, color intensity is very complex and challenging. This paper describes the nonlinear optimization methodology for the design of blended LED light sources. This paper presents the methodology that enables LED strings regarding various parameters, e.g. high color rendering index (CRI) and high luminous efficacy of a blended bi-color (namely red CCT-2500K and blue CCT-9000K) LED driving system. Due to the applied optimization, the obtained CRI is maintained 98.03%. The overall luminous intensity depends upon the combined luminous flux which depends upon the current control of both LED sources. These optimized LED currents ensure the desired CCT. The achieved luminous efficacy is 90% at two optimal peak wavelengths 601 nm and 426 nm respectively. Power loss is minimized by frequency optimization. At the same time power parameters i.e. low THD and high P. F. is also maintained. The nonlinear optimization is verified in Ltspice simulations and experimentally for two different luminaire strings.

Published in Journal of Electrical and Electronic Engineering (Volume 12, Issue 3)
DOI 10.11648/j.jeee.20241203.12
Page(s) 53-61
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

LED, CCT, CRI, THD, Frequency, Power Loss

References
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Cite This Article
  • APA Style

    Ferdous, F., Rashid, A. H. (2024). Optimization for Spectral and Power Characteristics of Bicolour LED Driver. Journal of Electrical and Electronic Engineering, 12(3), 53-61. https://doi.org/10.11648/j.jeee.20241203.12

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    ACS Style

    Ferdous, F.; Rashid, A. H. Optimization for Spectral and Power Characteristics of Bicolour LED Driver. J. Electr. Electron. Eng. 2024, 12(3), 53-61. doi: 10.11648/j.jeee.20241203.12

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    AMA Style

    Ferdous F, Rashid AH. Optimization for Spectral and Power Characteristics of Bicolour LED Driver. J Electr Electron Eng. 2024;12(3):53-61. doi: 10.11648/j.jeee.20241203.12

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  • @article{10.11648/j.jeee.20241203.12,
      author = {Fouzia Ferdous and ABM Harun-ur Rashid},
      title = {Optimization for Spectral and Power Characteristics of Bicolour LED Driver
    },
      journal = {Journal of Electrical and Electronic Engineering},
      volume = {12},
      number = {3},
      pages = {53-61},
      doi = {10.11648/j.jeee.20241203.12},
      url = {https://doi.org/10.11648/j.jeee.20241203.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jeee.20241203.12},
      abstract = {LED-powered luminaires have the ability to offer cutting-edge features like temperature adjustment and color management. Color shift creates discomfort in human eyes. So it is essential to design a LED driver which will precisely control the color parameters of the LED driver. Precise control of color parameters like CRI, CCT, color intensity is very complex and challenging. This paper describes the nonlinear optimization methodology for the design of blended LED light sources. This paper presents the methodology that enables LED strings regarding various parameters, e.g. high color rendering index (CRI) and high luminous efficacy of a blended bi-color (namely red CCT-2500K and blue CCT-9000K) LED driving system. Due to the applied optimization, the obtained CRI is maintained 98.03%. The overall luminous intensity depends upon the combined luminous flux which depends upon the current control of both LED sources. These optimized LED currents ensure the desired CCT. The achieved luminous efficacy is 90% at two optimal peak wavelengths 601 nm and 426 nm respectively. Power loss is minimized by frequency optimization. At the same time power parameters i.e. low THD and high P. F. is also maintained. The nonlinear optimization is verified in Ltspice simulations and experimentally for two different luminaire strings.
    },
     year = {2024}
    }
    

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    T1  - Optimization for Spectral and Power Characteristics of Bicolour LED Driver
    
    AU  - Fouzia Ferdous
    AU  - ABM Harun-ur Rashid
    Y1  - 2024/09/20
    PY  - 2024
    N1  - https://doi.org/10.11648/j.jeee.20241203.12
    DO  - 10.11648/j.jeee.20241203.12
    T2  - Journal of Electrical and Electronic Engineering
    JF  - Journal of Electrical and Electronic Engineering
    JO  - Journal of Electrical and Electronic Engineering
    SP  - 53
    EP  - 61
    PB  - Science Publishing Group
    SN  - 2329-1605
    UR  - https://doi.org/10.11648/j.jeee.20241203.12
    AB  - LED-powered luminaires have the ability to offer cutting-edge features like temperature adjustment and color management. Color shift creates discomfort in human eyes. So it is essential to design a LED driver which will precisely control the color parameters of the LED driver. Precise control of color parameters like CRI, CCT, color intensity is very complex and challenging. This paper describes the nonlinear optimization methodology for the design of blended LED light sources. This paper presents the methodology that enables LED strings regarding various parameters, e.g. high color rendering index (CRI) and high luminous efficacy of a blended bi-color (namely red CCT-2500K and blue CCT-9000K) LED driving system. Due to the applied optimization, the obtained CRI is maintained 98.03%. The overall luminous intensity depends upon the combined luminous flux which depends upon the current control of both LED sources. These optimized LED currents ensure the desired CCT. The achieved luminous efficacy is 90% at two optimal peak wavelengths 601 nm and 426 nm respectively. Power loss is minimized by frequency optimization. At the same time power parameters i.e. low THD and high P. F. is also maintained. The nonlinear optimization is verified in Ltspice simulations and experimentally for two different luminaire strings.
    
    VL  - 12
    IS  - 3
    ER  - 

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