Comparative Analysis of Series Connected MOSFETs with Single Switch for ZVS Turn On Converter Topology

Sinha, P.; Yadav, Sachin; Qin, Zian; Bauer, Pavol

doi:10.23919/EPE23ECCEEurope58414.2023.10264285

Comparative Analysis of Series Connected MOSFETs with Single Switch for ZVS Turn On Converter Topology

Conference paper (2023)

Authors

P. Sinha Student

Sachin Yadav DC systems, Energy conversion & Storage

Zian Qin DC systems, Energy conversion & Storage

Pavol Bauer DC systems, Energy conversion & Storage

Research Group

DC systems, Energy conversion & Storage

DOI: https://doi.org/10.23919/EPE23ECCEEurope58414.2023.10264285

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Published Date

2023

Language

English

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Research Group

DC systems, Energy conversion & Storage

Abstract

Series-connected MOSFETs with lower voltage ratings can be an alternative for single high-voltage switches. This paper compares two switch configurations for the soft-switched power converter topology targeted for a 1400V DC grid. The first configuration is a single switch rated at 1700V whereas the other is a series connected two MOSFETs rated at 900V. A buck converter with 1400V and 700V as input and output voltages respectively is taken as a case study. Triangular current modulation (TCM) ensures zero voltage switching (ZVS) at turn-on for all the switches. The analysis shows that the series-switch configuration can have much lower overall losses than the single-switch configuration.

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