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Design and Experimental Verification of 400-W Class LED Driver with Cooperative Control Method for Two-Parallel Connected DC/DC Converters

Author

Listed:
  • Tomoharu Yada

    (New Japan Radio Co., Ltd., 3-10, Nihonbashi Yokoyama-cho, Chuo-ku, Tokyo 103-8456, Japan)

  • Yuta Katamoto

    (Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 2-16-1, Tokiwadai, Ube city, Yamaguchi 755-8611, Japan)

  • Hiroaki Yamada

    (Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 2-16-1, Tokiwadai, Ube city, Yamaguchi 755-8611, Japan)

  • Toshihiko Tanaka

    (Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 2-16-1, Tokiwadai, Ube city, Yamaguchi 755-8611, Japan)

  • Masayuki Okamoto

    (Department of Electrical Engineering, National Institute of Technology, Ube College, 2-14-1, Tokiwadai, Ube city, Yamaguchi 755-8555, Japan)

  • Tsuyoshi Hanamoto

    (Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4, Hibikino, Wakamatsu, Kitakyushu city, Fukuoka 808-0196, Japan)

Abstract

This paper deals with a design and experimental verification of 400-W class light-emitting diode (LED) driver with cooperative control method for two-parallel connected DC/DC converters. In the cooperative control method, one DC/DC converter is selected to supply the output current for the LED, based on the reference value of the LED current. Thus, the proposed cooperative-control strategy achieves wide dimming range operation. The discontinuous current conduction mode (DCM) operation improves the total harmonic distortion (THD) value on the AC side of the LED driver. The standard of Electrical Applications and Materials Safety Act in Japan has defined the flicker frequency and minimum optical output. The smoothing capacitors are designed by considering the power flow and LED current ripple for satisfying the standard. A prototype LED driver is constructed and tested. Experimental results demonstrate that a wide dimming operation range from 1 to 100% is achieved with a THD value less than 10% on the AC side, by the proposed control strategy. The authors compare the power conversion efficiency between Si- and SiC-metal-oxide-semiconductor field-effect transistors (MOSFETs) based LED driver. The maximum power conversion efficiency by using SiC-MOSFETs based LED driver is 91.4%. Finally, the variable switching frequency method is proposed for improving the power conversion efficiency for a low LED current region.

Suggested Citation

  • Tomoharu Yada & Yuta Katamoto & Hiroaki Yamada & Toshihiko Tanaka & Masayuki Okamoto & Tsuyoshi Hanamoto, 2018. "Design and Experimental Verification of 400-W Class LED Driver with Cooperative Control Method for Two-Parallel Connected DC/DC Converters," Energies, MDPI, vol. 11(9), pages 1-20, August.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:9:p:2237-:d:165883
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    Citations

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    Cited by:

    1. Andrej Orgulan & Primož Sukič & Janez Ribič, 2019. "A Procedure for Mitigating the Light Flicker in Office LED Lighting Caused by Voltage Fluctuations," Energies, MDPI, vol. 12(20), pages 1-15, October.
    2. Claudio Adragna & Giovanni Gritti & Angelo Raciti & Santi Agatino Rizzo & Giovanni Susinni, 2020. "Analysis of the Input Current Distortion and Guidelines for Designing High Power Factor Quasi-Resonant Flyback LED Drivers," Energies, MDPI, vol. 13(11), pages 1-24, June.

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