Design of Passivity-based Damping Controller for Suppressing Power Oscillations in DC Microgrids

Yoon-Cheul Jeung, Dong Choon Lee, Tomislav Dragicevic, Frede Blaabjerg

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Abstract

In this paper, a novel damping control scheme for V/I droop-controlled DC microgrids is proposed to attenuate the oscillatory components in the power and current. At first, the model of the DC microgrid is introduced providing stability analysis. Then, the damping controller is designed using the interconnection and damping assignment — passivity-based control (IDA-PBC) methodology. In addition, the gain design technique for the IDA-PBC is developed. The proposed control scheme ensures that the oscillations of the output power and current are effectively attenuated. The validity of the proposed control algorithm has been verified by the results from both hardware in-the-loop simulation (HILS) and proto-type experiments.
Original languageEnglish
JournalIEEE Transactions on Power Electronics
VolumePP
Issue number99
Number of pages14
ISSN0885-8993
DOIs
Publication statusAccepted/In press - 2020

Keywords

  • DC microgrids
  • Damping controller
  • IDA-PBC
  • V/I droop

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