A Simple Autonomous Current-Sharing Control Strategy for Fast Dynamic Response of Parallel Inverters in Islanded Microgrids

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Abstract

This paper proposed a novel control strategy based on a virtual resistance and a phase locked loop for parallel three-phase inverters. The proposed controller can overcome the drawbacks of the conventional droop control such as slow transient response, complex design, and limited stability margins. The load sharing capability can be also obtained under asymmetrical output impedances in which the conventional droop controller was not properly working. The proposed approach has been verified by means of simulations and experimental results in a laboratory-scale prototype.
Original languageEnglish
Title of host publicationProceedings of the 2014 IEEE International Energy Conference (ENERGYCON)
Number of pages7
PublisherIEEE Press
Publication dateMay 2014
Pages182-188
ISBN (Print)978-1-4799-2449-3
DOIs
Publication statusPublished - May 2014
Event2014 IEEE International Energy Conference (ENERGYCON) - Dubrovnik, Croatia
Duration: 13 May 201416 May 2014

Conference

Conference2014 IEEE International Energy Conference (ENERGYCON)
CountryCroatia
CityDubrovnik
Period13/05/201416/05/2014
SeriesI E E E International Energy Conference. ENERGYCON proceedings

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Keywords

  • Parallel inverters
  • Droop control
  • Phase-locked loop
  • Virtual resistance

Cite this

Guan, Y., Vasquez, J. C., & Guerrero, J. M. (2014). A Simple Autonomous Current-Sharing Control Strategy for Fast Dynamic Response of Parallel Inverters in Islanded Microgrids. In Proceedings of the 2014 IEEE International Energy Conference (ENERGYCON) (pp. 182-188 ). IEEE Press. I E E E International Energy Conference. ENERGYCON proceedings https://doi.org/10.1109/ENERGYCON.2014.6850426