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Design application and comparison of single stage flyback and SEPIC PFC AC/DC converters for power LED lighting application
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Date
2012
Author
Yılmaz, Hasan
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In this work, single stage power factor corrected AC/DC converters for LEDs; single stage Flyback converter having different configuration from the traditional Flyback and single stage SEPIC converter is investigated. The study involves analysis, circuit design, performance comparisons and implementation. The study covers LEDs; their developments, characteristics and state-of-art in this new technology. The circuits are investigated by means of computer simulations. Operating principles and operating modes are studied along with design calculations. After applying prototypes in laboratory, the simulation results and theoretical analyses are confirmed. The single stage Flyback converter has high voltage input (220-240 Vac), and the output feeds up to 216 HB-LEDs, with the ratings of 24 V, 3.25 A with 90 W. The single stage SEPIC converter with universal input (80-265 Vac) has an output that feeds 21 power LEDs, with 67 V, 0.30 and 20 W ratings.
Subject Keywords
Light emitting diodes.
,
Light-emitting electrochemical cells.
,
AC-to-DC converters
,
DC-to-DC converters
URI
http://etd.lib.metu.edu.tr/upload/12615097/index.pdf
https://hdl.handle.net/11511/22004
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Graduate School of Natural and Applied Sciences, Thesis
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H. Yılmaz, “Design application and comparison of single stage flyback and SEPIC PFC AC/DC converters for power LED lighting application,” M.S. - Master of Science, Middle East Technical University, 2012.
