Wide-load range multi-objective 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 paper proposes a multi-objective 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 non-convex 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)
JournalIEEE Transactions on Power Electronics
DOIs
StateAccepted/In press - 2021

Keywords

  • Current minimization
  • dual active bridge converters
  • non-dominated sorting genetic algorithm
  • RMS current
  • triple phase shift control
  • zero voltage switching

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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