A Three-Level Converter With Reduced Filter Size Using Two Transformers and Flying Capacitors

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This paper proposes a pulse-width modulation three-level converter with reduced filter size using two transformers. The proposed converter has many advantages. All switches sustain only the half of the input voltage and since the secondary rectified voltage is a three-level waveform, the output filter inductor can be reduced. Also, because of the power sharing of transformer and reduced output inductor, high efficiency can be obtained. The operational principle, analysis, and design considerations of the proposed converter are presented in this paper. The validity of this study is confirmed by the experimental results from a prototype with 600 W, 500-600 V input, and 60 V output.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2013-01
Language
English
Article Type
Article
Keywords

DC-DC CONVERTER; ZERO-VOLTAGE; INPUT VOLTAGE; PWM; PARALLEL; FEATURES; SYSTEMS; SCHEME

Citation

IEEE TRANSACTIONS ON POWER ELECTRONICS, v.28, no.1, pp.46 - 53

ISSN
0885-8993
DOI
10.1109/TPEL.2012.2191798
URI
http://hdl.handle.net/10203/174610
Appears in Collection
EE-Journal Papers(저널논문)
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