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Design of Boost-Flyback Single-Stage PFC converter for LED power supply without electrolytic capacitor for energy-storage

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5 Author(s)
Zhang Bo ; Electr. Eng., Xi''an Jiaotong Univ., Xi''an, China ; Yang Xu ; Xu Ming ; Chen Qiaoliang
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Light emitting diodes (LEDs) are likely to be used for general lighting applications due to their high efficiency and longer life. This paper presents the concept of applying large voltage ripple for energy storage into the Boost-Flyback Single-Stage PFC converter for the elimination of the electrical capacitor. Following proposed design procedure, the single stage PFC circuit with small energy storage capacitance can still achieve good output voltage regulation while preserving desired input power factor. The detailed theoretical analysis and design procedure of the Single-Stage PFC converter is presented. The experimental results obtained on a 60 W prototype converter along with waveforms are presented.

Published in:

Power Electronics and Motion Control Conference, 2009. IPEMC '09. IEEE 6th International

Date of Conference:

17-20 May 2009