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A novel passive offline LED driver with long lifetime

    Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

    Abstract

    This paper describes a patent-pending passive offline light-emitting diode (LED) driver that has no controlled semiconductor switches, electrolytic capacitors, auxiliary power supply, and control board. It can provide a fairly smooth current from the ac mains to drive LED strings. The new circuit has the advantages of high input power factor, high energy efficiency and luminous efficacy, long lifetime, stable luminous output, and high robustness against extreme weather conditions. In addition, over 90% of the driver material is recyclable, leading to reduction of electronic waste. It is particularly suitable public LED lighting systems, such as road lighting systems. Experimental results based on a 50-W system are included in the paper to confirm the validity of the proposal. Due to the circuit simplicity, an energy efficiency exceeding 93.6% has been achieved. © 2010 IEEE.
    Original languageEnglish
    Article number5451183
    Pages (from-to)2665-2672
    JournalIEEE Transactions on Power Electronics
    Volume25
    Issue number10
    DOIs
    Publication statusPublished - 2010

    Bibliographical note

    Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

    Funding

    This work was supported by the Hong Kong Research Grant Council under Project Project CityU 123508 also by the Center for Power Electronics, City University of Hong Kong.

    UN SDGs

    This output contributes to the following UN Sustainable Development Goals (SDGs)

    1. SDG 7 - Affordable and Clean Energy
      SDG 7 Affordable and Clean Energy

    Research Keywords

    • AC motor drives
    • dc-dc power conversion
    • digital control
    • electrostatic devices
    • lamps
    • light sources
    • light-emitting diodes (LEDs)
    • lighting
    • lighting control
    • piezoelectric devices
    • plasma applications
    • power conversion
    • power electronics
    • power-conversion harmonics

    RGC Funding Information

    • RGC-funded

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