Comprehensive Analysis of a High-Power Density Phase-Shift Full Bridge Converter Highlighting the Effects of the Parasitic Capacitances

Dorin Petreus, Radu Etz, Toma Patarau and Ionut Ciocan
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Dorin Petreus: Applied Electronics Department, Technical University of Cluj-Napoca, 400027 Cluj-Napoca, Romania
Radu Etz: Applied Electronics Department, Technical University of Cluj-Napoca, 400027 Cluj-Napoca, Romania
Toma Patarau: Applied Electronics Department, Technical University of Cluj-Napoca, 400027 Cluj-Napoca, Romania
Ionut Ciocan: Applied Electronics Department, Technical University of Cluj-Napoca, 400027 Cluj-Napoca, Romania

Energies, 2020, vol. 13, issue 6, 1-20

Abstract: A phase-shift full bridge converter is analyzed in detail in continuous conduction mode for one switching cycle for both the leading and lagging legs of the primary bridge. The objective of the study is to determine how the stray capacitance of the transformer, and the capacitances of the diodes in the bridge rectifier affect the converter functionality. Starting from some experimental results, Laplace equivalent circuit models and describing equations are derived for each significant time interval during the switching cycle and are validated through simulations and experimental measurements. The resulting equations are of great interest in the high-power density domain because they can be used to design a clamping circuit for the output rectifier bridge accurately.

Keywords: phase-shift full bridge converter; stray capacitance; Laplace circuit models; parasitic elements (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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