Unified Grid-Forming/Following Inverter Control

The paper describes an inverter control scheme which incorporates both a phase-locked loop (PLL) for voltage synchronization and power-frequency droop for load sharing. As such, it is a hybrid grid-forming/following controller and offers beneficial characteristics of both. The model describing behav...

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Bibliographic Details
Published in:IEEE open access journal of power and energy 2022, Vol.9, p.1-1
Main Authors: Geng, Sijia, Hiskens, Ian A.
Format: Article
Language:English
Subjects:
Active filters
Controllers
Dynamic modelling
Dynamic performance
Grid-forming/following control
Inverter-based resources
Inverters
Load sharing
Phase locked loops
Power system dynamics
Steady-state
Synchronism
Synchronization
Voltage control
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Description
Summary:The paper describes an inverter control scheme which incorporates both a phase-locked loop (PLL) for voltage synchronization and power-frequency droop for load sharing. As such, it is a hybrid grid-forming/following controller and offers beneficial characteristics of both. The model describing behaviour is presented and connections with grid-forming and grid-following control strategies are considered. A process for black-starting the PLL-based inverter control scheme is described. Case studies explore controller small-and large-disturbance performance under a variety of system conditions.
ISSN:2687-7910
2687-7910
2644-1314
DOI:10.1109/OAJPE.2022.3217793