Analysis of CLL voltage-output resonant converters using describing functions

Foster, M. P. and Gould, C. and Gilbert, A. J. and Stone, D. A. and Bingham, Chris (2008) Analysis of CLL voltage-output resonant converters using describing functions. IEEE Transactions on Power Electronics, 23 (4). pp. 1772-1781. ISSN 0885-8993

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Analysis of CLL voltage-output resonant converters using describing functions
A new ac equivalent circuit for the CLL voltage- output resonant converter is presented, that offers improved accuracy compared with traditional FMA-based techniques. By employing describing function techniques, the nonlinear interac- tion of the parallel inductor, rectifier and load is replaced by a complex impedance, thereby facilitating the use of ac equivalent circuit analysis methodologies. Moreover, both continuous and dis- continuous rectifier-current operating conditions are addressed. A generic normalized analysis of the converter is also presented. To further aid the designer, error maps are used to demonstrate the boundaries for providing accurate behavioral predictions. A com- parison of theoretical results with those from simulation studies and experimental measurements from a prototype converter, are also included as a means of clarifying the benefits of the proposed techniques.
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Official URL: http://dx.doi.org/10.1109/TPEL.2008.924835

Abstract

A new ac equivalent circuit for the CLL voltage output resonant converter is presented, that offers improved
accuracy compared with traditional FMA-based techniques. By employing describing function techniques, the nonlinear interaction of the parallel inductor, rectifier and load is replaced by a complex impedance, thereby facilitating the use of ac equivalent circuit analysis methodologies. Moreover, both continuous and discontinuous rectifier-current operating conditions are addressed. A generic normalized analysis of the converter is also presented. To further aid the designer, error maps are used to demonstrate the boundaries for providing accurate behavioral predictions. A comparison
of theoretical results with those from simulation studies and experimental measurements from a prototype converter, are also included as a means of clarifying the benefits of the proposed techniques.

Item Type:Article
Keywords:Resonant power conversion
Subjects:H Engineering > H600 Electronic and Electrical Engineering
Divisions:College of Science > School of Engineering
ID Code:2311
Deposited By:INVALID USER
Deposited On:17 Apr 2010 16:38
Last Modified:02 Aug 2013 08:01

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