Power-Sharing between Grid-Forming and Grid-Following Inverters

Sadeque, Fahmid; Sharma, Dushyant; Mirafzal, Behrooz

doi:10.1109/compel52922.2021.9646073

Power-Sharing between Grid-Forming and Grid-Following Inverters

Conference · 02 November 2021 · 2021 IEEE 22nd Workshop on Control and Modelling of Power Electronics (COMPEL)

DOI:https://doi.org/10.1109/compel52922.2021.9646073· OSTI ID:1905754

Sadeque, Fahmid; Sharma, Dushyant; Mirafzal, Behrooz

Power-sharing between the grid-forming and the grid-following inverter in a small microgrid is a challenging task. Specifically, the decentralized droop-based power-sharing is difficult to achieve when the grid-forming inverter regulates the voltage and the frequency. This article proposes controllers for the grid-forming and the grid-following inverters, which ensure proportional power-sharing as well as regulate the voltage and the frequency. Both controllers use active power-frequency and reactive power-voltage droops. Additional secondary loops and secondary forward paths are added to the controller of the grid-forming inverter and the grid-following inverter, respectively, to ensure simultaneous voltage and frequency regulation and power-sharing. The efficacy of the proposed controllers for power-sharing is verified through experiment results in a multi-inverter testbed.

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Research Organization:: Kansas State Univ., Manhattan, KS (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office

DOE Contract Number:: EE0008767

OSTI ID:: 1905754

Report Number(s):: DOE-KSU-8767

Journal Information:: 2021 IEEE 22nd Workshop on Control and Modelling of Power Electronics (COMPEL), Conference: Twenty-second IEEE Workshop on Control and Modeling for Power Electronics (COMPEL-2021) Cartagena, Colombia 02-05 November 2021

Country of Publication:: United States

Language:: English

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