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Cooperative Triple-Phase-Shift Control for Isolated DAB DC-DC Converter to Improve Current Characteristics

  • Fengjiang Wu*
  • , Fan Feng
  • , Hoay Beng Gooi
  • *Corresponding author for this work
  • Nanyang Technological University

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, a cooperative triple-phase-shift (CTPS) control for the isolated dual active bridge dc-dc converter is proposed first to eliminate the dual-dc side flow back currents. Furthermore, the current characteristics of the proposed CTPS control with the main variable (the primary side inner phase shift) tuned in two different regions are derived in detail and compared with each other. The tuning region of the main variable with the optimal current characteristics is finally determined based on the comparison results. As a result, the current stress is reduced and the efficiency is enhanced. The detailed experimental results of CTPS control verify its validity and practicability. The advantages of CTPS control are also highlighted by comparing it with some conventional phase shift controls.

Original languageEnglish
Article number8511061
Pages (from-to)7022-7031
Number of pages10
JournalIEEE Transactions on Industrial Electronics
Volume66
Issue number9
DOIs
StatePublished - Sep 2019

Keywords

  • Current characteristics optimization
  • dual active bridge (DAB) DC-DC converter
  • dual-side flow back currents (DFBC)

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