Optimal control and DC fault ride-through of transmission level, MMC-based, isolated DC/DC converter

Dragan Jovcic, Huibin Zhang

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

1 Citation (Scopus)

Abstract

This paper investigates an optimum control strategy for an isolated dual-active-bridge DC/DC converter based on MMC (Modular Multilevel Converter) technology. The control goal is to achieve minimal current magnitude for given power transfer and to provide fast control for full positive and negative power range. The control strategy is derived in the rotating dq frame. The optimal operation is achieved using outer control loops that maintain and balance magnitude of both modulation indices to 0.95. The inner current control loops are used on both bridges in order to limit current magnitude under faults. The controller facilitates normal operation of DC/DC converter under DC faults. The validity of the converter controller is verified using a 1GW, 500kV/640kV test converter on a detailed PSCAD model for both normal and fault conditions.

Original languageEnglish
Title of host publication2016 IEEE Power and Energy Society General Meeting, PESGM 2016
PublisherIEEE Computer Society
Volume2016-November
ISBN (Electronic)9781509041688
DOIs
Publication statusPublished - 10 Nov 2016
Event2016 IEEE Power and Energy Society General Meeting, PESGM 2016 - Boston, United States
Duration: 17 Jul 201621 Jul 2016

Conference

Conference2016 IEEE Power and Energy Society General Meeting, PESGM 2016
CountryUnited States
CityBoston
Period17/07/1621/07/16

Keywords

  • DC-DC power converters
  • HVDC transmission
  • Power system protection
  • Power system simulation
  • Power transformers

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Nuclear Energy and Engineering
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering

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  • Cite this

    Jovcic, D., & Zhang, H. (2016). Optimal control and DC fault ride-through of transmission level, MMC-based, isolated DC/DC converter. In 2016 IEEE Power and Energy Society General Meeting, PESGM 2016 (Vol. 2016-November). [7741927] IEEE Computer Society. https://doi.org/10.1109/PESGM.2016.7741927