Publication

Operational Mode Analysis of the Isolated Three-Phase DC/DC Converter

2026

Abstract

This paper presents a comprehensive analysis of the operational modes of the unidirectional DC/DC converter, featuring a medium frequency Y-Y transformer and output filter inductor (3-ph DC/DC). All modes of operation are presented for the first time for this converter and mechanisms and conditions governing the transitions between the modes are discussed. The converter steady-state model is given. Steady-state operation is studied in detail and trade-offs between operational modes are identified from the perspective of input/output voltage controllability, device current stress, output current ripple and soft switching range implications, providing the necessary basis for the converter design. To validate the theoretical findings, a smallscale prototype of the converter was commissioned and used for experimental tests

Official source

https://infoscience.epfl.ch/entities/publication/822e51f6-efe6-4bab-889b-f33d8ce8db08

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2026

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/822e51f6-efe6-4bab-889b-f33d8ce8db08

About this result

Related concepts (32)

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A buck converter or step-down converter is a DC-to-DC converter which steps down voltage (while stepping up current) from its input (supply) to its output (load). It is a class of switched-mode power supply. Switching converters (such as buck converters) provide much greater power efficiency as DC-to-DC converters than linear regulators, which are simpler circuits that lower voltages by dissipating power as heat, but do not step up output current.

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Operational Mode Analysis of the Isolated Three-Phase DC/DC Converter

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