A Data-Driven Based Voltage Control Strategy for DC-DC Converters: Application to DC Microgrid

Research output: Contribution to journalArticleScientificpeer-review

Researchers

  • Kumars Rouzbehi
  • Arash Miranian
  • Juan Manuel Escaño
  • Elyas Rakhshani
  • Negin Shariati
  • Edris Pouresmaeil

Research units

  • University of Sevilla
  • University of Tehran
  • Delft University of Technology
  • Technical University of Sydney

Abstract

This paper develops a data-driven strategy for identification and voltage control for DC-DC power converters. The proposed strategy does not require a pre-defined standard model of the power converters and only relies on power converter measurement data, including sampled output voltage and the duty ratio to identify a valid dynamic model for them over their operating regime. To derive the power converter model from the measurements, a local model network (LMN) is used, which is able to describe converter dynamics through some locally active linear sub-models, individually responsible for representing a particular operating regime of the power converters. Later, a local linear controller is established considering the identified LMN to generate the control signal (i.e., duty ratio) for the power converters. Simulation results for a stand-alone boost converter as well as a bidirectional converter in a test DC microgrid demonstrate merit and satisfactory performance of the proposed data-driven identification and control strategy. Moreover, comparisons to a conventional proportional-integral (PI) controllers demonstrate the merits of the proposed approach.

Details

Original languageEnglish
Article number493
Number of pages14
JournalElectronics
Volume8
Issue number5
Publication statusPublished - 1 May 2019
MoE publication typeA1 Journal article-refereed

    Research areas

  • DC-DC power converter, Takagi-Sugeno fuzzy system, hierarchical bibary tree

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