A new active power controller in dual active bridge DC-DC converter with a minimum-current-point-tracking technique

Osama M. Hebala*, Ahmed A. Aboushady, Khaled H. Ahmed, Ibrahim Abdelsalam, Samuel J. Burgess

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)
158 Downloads (Pure)

Abstract

This article proposes a new controller for power regulation in dual active bridge (DAB) dc-dc converter based on a new scheme that tracks minimum RMS current to ensure minimum losses. The proposed controller is based on an implementation of perturb and observe (PO) tracking method that enables minimum current point tracking (MCPT) at any desired level of active power transfer and dc voltage ratio. The PO is embedded in a closed-loop control scheme which simultaneously regulates active power in DAB converter. The nonlinear I - V characteristic of DAB presents the basis for this proposed controller and the rationale of using PO algorithm. The proposed controller does not require complex nonlinear converter modeling and is not circuit parameter dependent. Design procedure of the proposed controller is presented, and extensive simulation is carried out using MATLAB/Simulink to validate the effectiveness of the proposed MCPT closed-loop controller. An experimental prototype also substantiates the results achieved.

Original languageEnglish
Pages (from-to)1328-1338
Number of pages11
JournalIEEE Journal of Emerging and Selected Topics in Power Electronics
Volume9
Issue number2
Early online date14 Aug 2020
DOIs
Publication statusPublished - Apr 2021

Keywords

  • dual active bridge (DAB)
  • minimum current point tracking (MCPT)
  • perturb and observe (P&O)
  • RMS current stress

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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