CUED Publications database

An Improved Control Scheme for Grid-forming Inverters

Ojo, Y and Watson, J and Lestas, I (2019) An Improved Control Scheme for Grid-forming Inverters. In: IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe), 2019-9-29 to 2019-10-2.

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In order to reduce the reliance of power grids on conventional (and often non-renewable) generation, reliable and dispatchable converter-interfaced distributed generators (DGs) are required. Instead of relying on large rotating machines for frequency and voltage regulation, it becomes crucial to develop improved control schemes for grid-forming inverters. In this paper we propose a simple and effective frequency and voltage control scheme that offers desirable dynamic response and power sharing. The proposed controller is compared to the conventional hierarchical control scheme via a stability analysis of the overall system dynamics and time-domain simulation results. It is shown that the transient performance and the stability properties are significantly improved.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Divisions: Div F > Control
Depositing User: Cron Job
Date Deposited: 05 Jul 2019 20:09
Last Modified: 07 Sep 2021 02:13
DOI: 10.1109/ISGTEurope.2019.8905574