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An N-port system model for multiwinding transformer based multilevel converters in DC-autotransformer configuration

Grimm, F; Baghdadi, M; Bucknall, R; (2021) An N-port system model for multiwinding transformer based multilevel converters in DC-autotransformer configuration. In: 2021 IEEE Design Methodologies Conference, DMC 2021. IEEE: Bath, UK. Green open access

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Abstract

This paper proposes a time-domain modelling approach for a multi-winding transformer-based multilevel DC/DC converter. Within previous research, multi-winding transformers have been modeled using cantilever models. These models, while simple, have no direct intuitive interpretation. Furthermore, they do not include currents circulating within each individual module and external load currents affecting only some of the modules at the same time. In this paper, a DC/DC converter model that includes the transformer as N-port network with magnetization and stray inductance and conduction losses is proposed. The model is verified using simulations showing both accurate predictions of both, circulating currents within each module and load currents affecting multiple modules.

Type: Proceedings paper
Title: An N-port system model for multiwinding transformer based multilevel converters in DC-autotransformer configuration
Event: 2021 IEEE Design Methodologies Conference (DMC)
ISBN-13: 9781665403016
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/DMC51747.2021.9529928
Publisher version: https://doi.org/10.1109/DMC51747.2021.9529928
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Inductance, Multilevel converters, Network topology, Simulation, Magnetization, Switches, Predictive models
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10137691
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