Distributed Hybrid Power-Sharing Control Strategy within Islanded Microgrids

G. Wanlongo Ndiwulu, M. Matalatala, A. Kuti Lusala, P. Ntambu Bokoro

Research output: Contribution to conferencePaperpeer-review

1 Citation (Scopus)


The stable operation of an islanded microgrid powered by multiple distributed energy sources (DESs) depends on the control of the voltage magnitude, the frequency and the power-sharing among the DESs. Uncontrolled power-sharing among sources can lead to voltage and frequency stability issues characterized by poorly damped oscillations. To achieve efficient power-sharing, a level-one control strategy is required. This paper proposes a communication-less hybrid control strategy to implement power-sharing regardless of the inverter output impedance. In this strategy, the power-sharing control is achieved with the inverters in both grid-forming and grid-following control modes - in particular, for the sources interfaced with rotating machines. Simulation results show that the instantaneous power-sharing is correctly carried out while maintaining the RMS voltage at the required value. Furthermore, the voltage drops remain within the 10% admissible range.

Original languageEnglish
Publication statusPublished - 2023
Event31st Southern African Universities Power Engineering Conference, SAUPEC 2023 - Johannesburg, South Africa
Duration: 24 Jan 202326 Jan 2023


Conference31st Southern African Universities Power Engineering Conference, SAUPEC 2023
Country/TerritorySouth Africa


  • AC microgrid
  • grid-following
  • grid-forming
  • inverter
  • power-sharing control

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Safety, Risk, Reliability and Quality


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