A Comprehensive Analysis on Complex Power Flow Mechanism in an AC-AC Dual Active Bridge
An ac-ac Dual Active Bridge (DAB) as a Solid State Transformer (SST) is investigated for active and reactive power flows in this article. Analytical expressions for the required phase shifts in open-loop operation are derived. The leakage inductance of the DAB and switching frequency are shown to be critical parameters in the design of DAB as an SST, and a design rule is formulated based on the derived results. A simulation model of the converter is run using the closed-form solutions for the phase obtained, and the ac-ac DAB is shown to meet the real and reactive power demands accurately.
K. J. Veeramraju et al., "A Comprehensive Analysis on Complex Power Flow Mechanism in an AC-AC Dual Active Bridge," 2022 IEEE Power and Energy Conference at Illinois, PECI 2022, Institute of Electrical and Electronics Engineers (IEEE), Jan 2022.
The definitive version is available at https://doi.org/10.1109/PECI54197.2022.9744009
Electrical and Computer Engineering
Keywords and Phrases
AC Distribution Systems; Dual Active Bridge Converter; Microgrids; Power Electronic Transformer; Renewable Energy Integration; Solid-State Trans- Former (SST)
International Standard Book Number (ISBN)
Article - Conference proceedings
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01 Jan 2022