Abstract
The isolated three port active-bridge-based DC-DC converter, referred to as Triple Active Bridge (TAB) converter is a popular multi-port converter topology. This paper proposes a simple and systematic design methodology for the TAB converter. The Fundamental Harmonic Approximation (FHA) technique is used to model the TAB converter for analyzing its operation. A systematic method is proposed for the selection of TAB converter parameters such as the multi-winding transformer turns-ratio and the series inductance at each AC port. Switching circuit simulations are performed to compare various TAB converter designs and to showcase the benefits of the proposed design. A 1 kW rated TAB converter hardware prototype is constructed in the laboratory and experimental results are provided to validate the effectiveness of the proposed design procedure.
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