Grid-Forming Inverter Control for Power Sharing in Microgrids Based on P / f and Q / V Droop Characteristics

Qusay Salem, Rafat Aljarrah, Mazaher Karimi () and Ayman Al-Quraan
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Qusay Salem: Department of Electrical Engineering, Princess Sumaya University for Technology, Amman P.O. Box 1438, Jordan
Rafat Aljarrah: Department of Electrical Engineering, Princess Sumaya University for Technology, Amman P.O. Box 1438, Jordan
Mazaher Karimi: School of Technology and Innovations, Electrical Engineering, University of Vaasa, 65200 Vaasa, Finland
Ayman Al-Quraan: Department of Electrical Power Engineering, Yarmouk University, Irbid P.O. Box 566, Jordan

Sustainability, 2023, vol. 15, issue 15, 1-15

Abstract: Grid-forming inverters are anticipated to be integrated more into future smart microgrids commencing the function of traditional power generators. The grid-forming inverter can generate a reference frequency and voltage itself without assistance from the main grid. This paper comprehensively investigates grid-forming inverter modelling and control methodology. A decentralized method employing an active power versus frequency P − f droop and a reactive power versus voltage Q − V droop is exploited to drive the operation of the grid-forming inverter. This decentralized method ensures balancing the supply and demand beside the power-sharing task between two or more inverters. The performance of the grid-forming inverter is examined by monitoring the frequency and RMS voltage of the inverter bus for three different periods of a varying PQ load. In addition, the performance of the resultant droop is compared with the assumed droop to validate the effectiveness of the proposed method. Finally, two grid-forming inverters equipped with the same droop characteristics are connected to a single load to observe the power-sharing concept among them. All simulations are implemented and executed using Matlab/Simulink version R2014b.

Keywords: grid-forming inverter; decentralized control; P − f droop control; Q − V droop control; power sharing (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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