Wide-Load Range Multiobjective Efficiency Optimization Produces Closed-Form Control Solutions for Dual Active Bridge Converter

Lu Zhou, Yihan Gao, Hao Ma, Philip T. Krein

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish (US)
Article number9337193
Pages (from-to)8612-8616
Number of pages5
JournalIEEE Transactions on Power Electronics
Volume36
Issue number8
DOIs
StateAccepted/In press - 2021

Keywords

  • Current minimization
  • dual active bridge converters (DABs)
  • nondominated sorting genetic algorithm
  • rms current
  • triple-phase-shift (TPS) control
  • zero-voltage switching (ZVS)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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