A Bidirectional Soft-Switched DAB-Based Single-Stage Three-Phase AC-DC Converter for V2G Application

Das, Dibakar and Weise, Nathan and Basu, Kaushik and Baranwal, Rohit and Mohan, Ned (2019) A Bidirectional Soft-Switched DAB-Based Single-Stage Three-Phase AC-DC Converter for V2G Application. In: Institute of Electrical and Electronics Engineers Inc., 5 (1). pp. 186-199.

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Abstract

In vehicle-to-grid applications, the battery charger of the electric vehicle (EV) needs to have a bidirectional power flow capability. Galvanic isolation is necessary for safety. An ac-dc bidirectional power converter with high-frequency isolation results in high power density, a key requirement for an on-board charger of an EV. Dual-active-bridge (DAB) converters are preferred in medium power and high voltage isolated dc-dc converters clue to high power density and better efficiency. This paper presents a DAB-based three-phase ac-dc isolated converter with a novel modulation strategy that results in: 1) single stage power conversion with no electrolytic capacitor, improving the reliability and power density; 2) open-loop power factor correction; 3) soft-switching of all semiconductor devices; and 4) a simple linear relationship between the control variable and the transferred active power. This paper presents a detailed analysis of the proposed operation, along with simulation results and experimental verification.

Item Type:	Journal Article
Publication:	Institute of Electrical and Electronics Engineers Inc.
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	Copyright of this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords:	Dual active bridge (DAB);High-frequency link;Single-stage ac-dc converter;Soft-switching
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	21 Apr 2019 08:05
Last Modified:	21 Apr 2019 08:05
URI:	http://eprints.iisc.ac.in/id/eprint/62293

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