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A Reduced Switch Count Single-Stage Three-Phase Bidirectional Rectifier With High-Frequency Isolation

Baranwal, Rohit and Iyer, Kartik V and Basu, Kaushik and Castelino, Gysler F and Mohan, Ned (2018) A Reduced Switch Count Single-Stage Three-Phase Bidirectional Rectifier With High-Frequency Isolation. In: IEEE TRANSACTIONS ON POWER ELECTRONICS, 33 (11). pp. 9520-9541.

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Official URL: http://dx.doi.org/10.1109/TPEL.2018.2790800


Dual active bridge (DAB) based converters offer the benefit of smaller volume due to high-frequency isolation and controllability of active power flow, making them attractive for various applications, such as renewable energy generation, plug-in hybrid vehicles, and distribution systems. This paper presents a novel converter topology along with a modulation strategy for a DAB-based three-phase ac to dc converter. The major benefits are single-stage conversion, no unreliable intermediate dc-link capacitor, reduced number of switches, i.e., only two active switches on the ac side, simple control scheme, open-loop unity power factor operation, bidirectional power flow, and partial soft-switching. This paper presents the analysis of all the operating modes of the converter, resulting in the analytical estimation of power transfer and rms winding current and investigation of soft-switching conditions for the power devices. Simulation and experimental results have been presented to demonstrate the advantages of the proposed technique and accuracy of the analysis.

Item Type: Journal Article
Additional Information: Copy right for this article belong to IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
Keywords: Dual active bridge (DAB); high-frequency (HF) link; isolated converter; power electronic transformer (PET); single stage; soft switching; solid-state transformer (SST); unity power factor; zero current switching (ZCS); zero voltage switching (ZVS)
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 11 Sep 2018 14:57
Last Modified: 11 Sep 2018 14:57
URI: http://eprints.iisc.ac.in/id/eprint/60637

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