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http://dx.doi.org/10.6113/JPE.2015.15.4.876

A Controllable LCL-T Resonant AC/DC Converter for High Frequency Power Distribution Systems  

Zeng, Jun (School of Electric Power, South China University of Technology)
Li, Xuesheng (School of Electric Power, South China University of Technology)
Liu, Junfeng (School of Automation Science and Engineering, South China University of Technology)
Publication Information
Journal of Power Electronics / v.15, no.4, 2015 , pp. 876-885 More about this Journal
Abstract
High frequency alternating current (HFAC) has been widely used in a wide range of power distribution systems (PDS) due to its superior performance. A high frequency AC/DC converter plays the role of converting HFAC voltage to DC voltage. In this paper, a new LCL-T resonant AC/DC converter has been proposed, and an easier control method based on input voltage comparison is presented, without the complicated calculation of the zero-crossing point. Both a low distortion and near-to-unity power factor can be achieved by the proposed resonant converter and control strategy. The operational principle and steady-state analysis are given for the proposed resonant converter. A simulation model and experimental prototype are implemented with an operation frequency of 25kHz and a rated power of 20W. The simulation and experimental results verify the accuracy of the analysis and the excellent performance of the proposed topology.
Keywords
AC/DC converter; Controllable resonant converter; High frequency alternating current (HFAC);
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