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http://dx.doi.org/10.6113/TKPE.2019.24.5.379

Bidirectional Flyback Converter Design Methodology for Differential Power Processing Modules in PV Applications  

Park, Seungbin (School of Electrical & Computer Eng., UNIST)
Kim, Mina (School of Electrical & Computer Eng., UNIST)
Jeong, Hoejeong (LG Electronics)
Kim, Taewon (Research Institute of Industrial Science and Technology)
Kim, Katherine A. (Department of Electrical Engineering., NTU)
Jung, Jee-Hoon (School of Electrical & Computer Eng., UNIST)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.24, no.5, 2019 , pp. 379-387 More about this Journal
Abstract
A bidirectional flyback converter is a suitable topology for use in a PV-to-bus differential power processing (DPP) module for PV applications due to its electrical isolation capability, bidirectional power transfer, high step-up ratio, and simple circuit structure. However, the bidirectional flyback converter design should consider the effect of the output-side power switch utilized for bidirectional operation compared with that of the conventional flyback converter. This study presents the structure and design methodology of the bidirectional flyback converter for a PV DPP module. Magnetizing inductance is designed by calculating the power loss of converter components within the rated load range under the discontinuous conduction mode, which is unaffected by the reverse recovery characteristics of the anti-parallel diode of the output-side power switch. The validity of the proposed design methodology is verified using a 25 W bidirectional flyback converter prototype. The operational principles and the performance of the DPP operation are verified using practical DPP modules consisting of bidirectional flyback converters implemented according to the proposed design methodology.
Keywords
DPP(Differential Power Processing); Bidirectional converter; Photovoltaic; Flyback converter;
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Times Cited By KSCI : 1  (Citation Analysis)
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