A Synchronous-Reference-Frame I-V Droop Control Method for Parallel-Connected Inverters

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Abstract

A simple and fast decentralized Current-Voltage (I-V) droop control method under the Synchronous-Reference-Frame (SRF) is proposed to share output current for parallel three-phase inverters with LC filter. The I-V droop characteristic is derived in accordance with the virtual impedance in SRF. Thus, each inverter enables to work in a voltage controlled mode where it controls the filter capacitor voltage. Moreover, a detailed state-space model of two parallel inverters is derived to analyze the control performance. Through the simulation and experiment validation, the proposed method provides accurate current sharing and faster transient response under inverter connection in comparison with the conventional droop control.
Original languageEnglish
Title of host publication2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018
Number of pages5
PublisherIEEE
Publication date22 Oct 2018
Pages2668-2672
Article number8507446
ISBN (Print)978-1-5386-4190-3
ISBN (Electronic)978-4-88686-405-5
DOIs
Publication statusPublished - 22 Oct 2018
Eventthe International Power Electronics Conference, IPEC-Niigata 2018 -ECCE Asia - Niigata, Japan
Duration: 20 May 201824 Jun 2018

Conference

Conferencethe International Power Electronics Conference, IPEC-Niigata 2018 -ECCE Asia
CountryJapan
CityNiigata
Period20/05/201824/06/2018

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Keywords

  • Parallel inverters
  • I-V droop
  • SRF
  • Current sharing

Cite this

Li, M., Gui, Y., Jin, Z., Guan, Y., & Guerrero, J. M. (2018). A Synchronous-Reference-Frame I-V Droop Control Method for Parallel-Connected Inverters. In 2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018 (pp. 2668-2672). [8507446] IEEE. https://doi.org/10.23919/IPEC.2018.8507446