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An enhanced model for small-signal analysis of the phase-shifted full-bridge converter

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Di Capua, G., Shirsavar, S. A., Hallworth, M. A. and Femia, N. (2014) An enhanced model for small-signal analysis of the phase-shifted full-bridge converter. IEEE Transactions on Power Electronics, PP (99). ISSN 0885-8993 doi: 10.1109/TPEL.2014.2314241

Abstract/Summary

This paper presents an in-depth critical discussion and derivation of a detailed small-signal analysis of the Phase-Shifted Full-Bridge (PSFB) converter. Circuit parasitics, resonant inductance and transformer turns ratio have all been taken into account in the evaluation of this topology’s open-loop control-to-output, line-to-output and load-to-output transfer functions. Accordingly, the significant impact of losses and resonant inductance on the converter’s transfer functions is highlighted. The enhanced dynamic model proposed in this paper enables the correct design of the converter compensator, including the effect of parasitics on the dynamic behavior of the PSFB converter. Detailed experimental results for a real-life 36V-to-14V/10A PSFB industrial application show excellent agreement with the predictions from the model proposed herein.1

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Item Type Article
URI https://reading-clone.eprints-hosting.org/id/eprint/36485
Item Type Article
Refereed Yes
Divisions Science
Uncontrolled Keywords Phase-Shifted Full-Bridge, Small-Signal Analysis, Losses-based dynamic modeling
Publisher IEEE
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