Title :
Powering LED Using High-Efficiency SR Flyback Converter
Author :
Hwu, K.I. ; Yau, Y.T. ; Lee, Li-Ling
Author_Institution :
Center for Power Electron. Technol., Nat. Taipei Univ. of Technol., Taipei
Abstract :
A high-efficiency synchronously-rectified (SR) flyback converter with the proposed multi-function circuit is presented herein so as to get through not only playing the role of an LC snubber but also detecting the zero crossing of the current to reduce switching loss and feeding the peripheral circuit. And hence, this converter has high efficiency all over the operating range, and, together with one front-end power-factor-correction (PFC) AC-DC converter, is applied to feeding the LED street light. In this paper, the basic operating principles of the proposed topology are firstly illustrated in details, and secondly some simulated and experimental results are provided to demonstrate the effectiveness of the proposed topology.
Keywords :
AC-DC power convertors; light emitting diodes; snubbers; AC-DC converter; LC snubber; LED street light; light emitting diodes; multifunction circuit; power factor correction; switching loss; synchronously-rectified flyback converter; Circuit topology; Feeds; Light emitting diodes; Snubbers; Strontium; Switched capacitor circuits; Switches; Switching circuits; Switching converters; Switching loss;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2009. APEC 2009. Twenty-Fourth Annual IEEE
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4244-2811-3
Electronic_ISBN :
1048-2334
DOI :
10.1109/APEC.2009.4802713