A Nonlinear, Bounded and Lipchitz Continuous Distributed Active Power Sharing Control Method for Islanded AC Microgrids

Xiaoxiao Meng, Niancheng Zhou, Qianggang Wang*, Josep M. Guerrero

*Corresponding author

Research output: Contribution to journalJournal articleResearchpeer-review

4 Citations (Scopus)
22 Downloads (Pure)

Abstract

In this paper, a nonlinear, bounded, distributed secondary control (DSC) method is proposed to coordinate all the distributed generators (DGs) in islanded AC microgrids (MGs). This proposed consensus-based DSC strategy can not only guarantee the restoration control of frequency and voltage but also realize an accurate active power sharing control. Through introducing a nonlinear dynamic from beta cumulative distribution function (CDF), the convergence speed of DSC is accelerated, the asymptotical convergence of DSC is ensured, and the transient overshoot of DSC is diminished compared with traditional DSC. Moreover, by ensuring the Lipchitz continuity characteristic of the control algorithm, the common chattering phenomenon in non-Lipchitz DSC scheme is eliminated. The stability and performance of the proposed DSC are also analyzed in this paper. An islanded AC microgrid test system with four inverter-based DGs is built in MATLAB/SIMULINK to further validate the effeteness of the proposed DSC strategy.
Original languageEnglish
Article number8648177
JournalIEEE Access
Volume7
Pages (from-to)36843-36853
Number of pages11
ISSN2169-3536
DOIs
Publication statusPublished - Feb 2019

Keywords

  • Chattering phenomenon
  • Islanded microgrid
  • Lipchitz continuity
  • Multi-agent system
  • Nonlinear distributed secondary control

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