Title :
A modified SEPIC converter with soft-switching feature for power factor correction
Author :
Shen, C.-L. ; Wu, Y.-E. ; Chen, M.-H.
Author_Institution :
Dept. of Electron. Eng., Nat. Kaohsiung First Univ. of Sci. & Technol., Kaohsiung
Abstract :
In this paper, a modified SEPIC converter is presented to function as a power factor corrector (PFC). The modified SEPIC-type PFC not only can achieve unity power factor but reduce DC-link voltage to release component stresses. Therefore, it is suitable for high line-voltage applications. A soft-switching cell composed of an active switch and an inductor-capacitor resonant circuit is embedded into the PFC to obtain zero-voltage switching (ZVS) feature. As a result, the efficiency of the converter is improved significantly. Operation principles are discussed in detail and conceptual key waveforms are also shown in this paper. A prototype is designed, analyzed and implemented. The simulation results and practical measurements have verified the feasibility of the proposed modified soft-switching SEPIC converter.
Keywords :
power factor correction; switching convertors; zero voltage switching; SEPIC converter; active switch; inductor-capacitor resonant circuit; power factor correction; soft-switching feature; zero-voltage switching; DC-DC power converters; Environmentally friendly manufacturing techniques; Power factor correction; Power system harmonics; Reactive power; Rectifiers; Stress; Switches; Topology; Zero voltage switching; Power factor corrector; dc-link voltage; soft-switching feature;
Conference_Titel :
Industrial Technology, 2008. ICIT 2008. IEEE International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-1705-6
Electronic_ISBN :
978-1-4244-1706-3
DOI :
10.1109/ICIT.2008.4608562
