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This letter proposes a multiobjective efficiency optimization method for triple-phase-shift (TPS) control of isolated dual active bridge converters (DABs). A comprehensive optimization of inductor current stress, inductor rms current, and zero-voltage switching (ZVS) is presented to reduce conduction losses, magnetic losses, and switching losses. A genetic algorithm is used to search for optimal solutions of the DAB nonconvex optimization problem. Analysis of these solutions gives rise to closed-form expressions for optimum TPS control angles, valid over various power and voltage levels. These can be realized for real-time operation. A 3.3-kW experimental prototype is used to verify the proposed optimized modulation control.
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Zhou et al. (2021) studied this question.
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