Design of a reduced-order observer for Sensorless control of Dual-Active-Bridge converter

Nguyen Duy Dinh, Goro Fujita

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A reduced-order observer is developed in this paper. The target is for sensorless current control of Dual Active Bridge (DAB) converters. Inherent from some relevance researches, this research also uses the Fundamental Harmonic Approximation analysis to establish the observer model. The observer uses the Terminal 2 voltage as the only feedback signal. No current sensors are required. Experimental results show that the load current can be estimated with high accuracy. The load angle which represent the reactive power can also be estimated with the error less than ±5 degrees. The observer can be used for current mode control or voltage mode plus current feedforward control of DAB converters.

Original languageEnglish
Title of host publication2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages363-369
Number of pages7
ISBN (Electronic)9784886864055
DOIs
Publication statusPublished - 2018 Oct 22
Event8th International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018 - Niigata, Japan
Duration: 2018 May 202018 May 24

Other

Other8th International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018
CountryJapan
CityNiigata
Period18/5/2018/5/24

Keywords

  • Dual-active-bridge converter
  • frequency domain analysis
  • reduced-order observer
  • sensorless current control
  • single phase shift

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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  • Cite this

    Dinh, N. D., & Fujita, G. (2018). Design of a reduced-order observer for Sensorless control of Dual-Active-Bridge converter. In 2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018 (pp. 363-369). [8507888] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/IPEC.2018.8507888