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Technical Dialogue

Vehicular Power Electronic Circuits and Systems

D23.6 - Loss-Optimized Design of a Triple Active Bridge DC-DC Converter for an Electric Vehicle Application

Thursday, March 20, 2025
11:30 AM – 1:30 PM ET
Location: Level One, Hall A3
This paper presents the optimized design of an isolated triple active bridge (TAB) DC/DC converter using particle swarm optimization. The optimization problem is formulated to optimally select the leakage inductance values of the TAB three-winding transformer, aiming to minimize MOSFET losses across a wide range of operating conditions. The TAB equations are derived using the generalized harmonic approximation (GHA) technique, which reduces the computational burden and improves modeling accuracy regardless of the converter’s operating zone. The TAB, with the selected tank parameters, is modeled in the MATLAB-PLECS to validate the approach. The study concludes that the proposed design methodology optimally selects the three-port transformer leakage inductances, ensuring a wide zero-voltage switching (ZVS) range and high converter efficiency.