Virtual Admittance Loop for Voltage Harmonic Compensation in Microgrids

Cristian Blanco, David Reigosa, Juan C. Vasquez, Josep M. Guerrero, Fernando Briz

Research output: Contribution to journalJournal articleResearchpeer-review


The use of the virtual admittance concept for harmonic and/or unbalance compensation in microgrids when multiple inverters operate in parallel is proposed in this paper. The virtual impedance concept has been traditionally used for these purposes. However, one drawback of the virtual impedance is that it can only be applied to distributed generation (DG) units operating in voltage control mode (VSI-VCM), but is not applicable to DG units working in current control mode (e.g., current-regulated voltage-source inverters, VSI-CCM). Contrary to this, the proposed method can be used in any converter topology and control mode, including VSI-CCM and VSI-VCM.
Original languageEnglish
JournalIEEE Transactions on Industry Applications
Issue number4
Pages (from-to)3348 - 3356
Number of pages9
Publication statusPublished - Jul 2016


  • Power quality
  • Power sharing
  • Virtual admittance
  • Virtual impedance
  • Voltage harmonics
  • Voltage unbalance

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