Optimal Design of a Dual Active Bridge based Single-stage DC-AC Converter

Das, D and Basu, K (2020) Optimal Design of a Dual Active Bridge based Single-stage DC-AC Converter. In: IECON Proceedings (Industrial Electronics Conference), 19 - 21 October 2020, Virtual, Singapore, pp. 1395-1400.

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Abstract

This paper presents a design and operation strategy for a single-phase single-stage Dual active bridge (DAB) based AC-DC converter. Conventional AC-DC power conversion happens in two stages, an active front end converter followed by an isolated DC-DC conversion stage. Conversion with multiple stages lead to lower efficiency and power density due to presence of an intermediate DC link capacitor and hard-switched rectifier. This paper utilizes a single stage conversion topology where the grid side converter is switched only twice in a line cycle resulting in reduced switching losses. A modulation strategy is discussed which results in unity power factor operation and soft switching. Two separate design strategies are proposed which lead to minimization of the DAB rms and peak of inductor current. Simulation results are presented for a 2.5 kW converter which verify the effectiveness of the design technique. © 2020 IEEE.

Item Type:	Conference Paper
Publication:	IECON Proceedings (Industrial Electronics Conference)
Publisher:	IEEE Computer Society
Additional Information:	The copyright for this article belongs to IEEE Computer Society.
Keywords:	DC-DC converters; Design; Electric rectifiers; Industrial electronics; Rectifying circuits, Ac-dc power conversion; Active front end converters; Design and operations; Design strategies; Dual active bridges; Grid-side converter; Modulation strategy; Unity power factor, Electric inverters
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	11 Feb 2023 03:11
Last Modified:	11 Feb 2023 03:11
URI:	https://eprints.iisc.ac.in/id/eprint/80180

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