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Journal of Applied Mathematics
Volume 2014 (2014), Article ID 514281, 8 pages
http://dx.doi.org/10.1155/2014/514281
Research Article

Study on a Novel High-Efficiency Bridgeless PFC Converter

1School of Electric Information, Xihua University, Chengdu 610039, China
2School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
3Information Technology Branch, The Second Research Institute of General Administration of Civil Aviation of China, Chengdu 610042, China

Received 24 January 2014; Accepted 18 June 2014; Published 4 August 2014

Academic Editor: Gongnan Xie

Copyright © 2014 Cao Taiqiang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In order to implement a high-efficiency bridgeless power factor correction converter, a new topology and operation principles of continuous conduction mode (CCM) and DC steady-state character of the converter are analyzed, which show that the converter not only has bipolar-gain characteristic but also has the same characteristic as the traditional Boost converter, while the voltage transfer ratio is not related with the resonant branch parameters and switching frequency. Based on the above topology, a novel bridgeless Bipolar-Gain Pseudo-Boost PFC converter is proposed. With this converter, the diode rectifier bridge of traditional AC-DC converter is eliminated, and zero-current switching of fast recovery diode is achieved. Thus, the efficiency is improved. Next, we also propose the one-cycle control policy of this converter. Finally, experiments are provided to verify the accuracy and feasibility of the proposed converter.