Overview on Grid-Forming Inverter Control Methods

In this paper, different control approaches for grid-forming inverters are discussed and compared with the grid-forming properties of synchronous machines. Grid-forming inverters are able to operate AC grids with or without rotating machines. In the past, they have been successfully deployed in inve...

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Main Authors: Peter Unruh, Maria Nuschke, Philipp Strauß, Friedrich Welck
Format: Article
Language:English
Published: MDPI AG 2020-05-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/13/10/2589
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author Peter Unruh
Maria Nuschke
Philipp Strauß
Friedrich Welck
author_facet Peter Unruh
Maria Nuschke
Philipp Strauß
Friedrich Welck
author_sort Peter Unruh
collection DOAJ
description In this paper, different control approaches for grid-forming inverters are discussed and compared with the grid-forming properties of synchronous machines. Grid-forming inverters are able to operate AC grids with or without rotating machines. In the past, they have been successfully deployed in inverter dominated island grids or in uninterruptable power supply (UPS) systems. It is expected that with increasing shares of inverter-based electrical power generation, grid-forming inverters will also become relevant for interconnected power systems. In contrast to conventional current-controlled inverters, grid-forming inverters do not immediately follow the grid voltage. They form voltage phasors that have an inertial behavior. In consequence, they can inherently deliver momentary reserve and increase power grid resilience.
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spelling doaj.art-844f95c08cb24c2a9711dda0f497168c2023-11-20T01:02:17ZengMDPI AGEnergies1996-10732020-05-011310258910.3390/en13102589Overview on Grid-Forming Inverter Control MethodsPeter Unruh0Maria Nuschke1Philipp Strauß2Friedrich Welck3Power System Stability and Converter Technology Division, Fraunhofer Institute for Energy Economics and Energy System Technology IEE, 34119 Kassel, GermanyPower System Stability and Converter Technology Division, Fraunhofer Institute for Energy Economics and Energy System Technology IEE, 34119 Kassel, GermanyPower System Stability and Converter Technology Division, Fraunhofer Institute for Energy Economics and Energy System Technology IEE, 34119 Kassel, GermanyPower System Stability and Converter Technology Division, Fraunhofer Institute for Energy Economics and Energy System Technology IEE, 34119 Kassel, GermanyIn this paper, different control approaches for grid-forming inverters are discussed and compared with the grid-forming properties of synchronous machines. Grid-forming inverters are able to operate AC grids with or without rotating machines. In the past, they have been successfully deployed in inverter dominated island grids or in uninterruptable power supply (UPS) systems. It is expected that with increasing shares of inverter-based electrical power generation, grid-forming inverters will also become relevant for interconnected power systems. In contrast to conventional current-controlled inverters, grid-forming inverters do not immediately follow the grid voltage. They form voltage phasors that have an inertial behavior. In consequence, they can inherently deliver momentary reserve and increase power grid resilience.https://www.mdpi.com/1996-1073/13/10/2589droop controlgrid-forming inverterelectrical inertiainverter-dominated power systemvirtual synchronous machinevoltage-controlled inverter
spellingShingle Peter Unruh
Maria Nuschke
Philipp Strauß
Friedrich Welck
Overview on Grid-Forming Inverter Control Methods
Energies
droop control
grid-forming inverter
electrical inertia
inverter-dominated power system
virtual synchronous machine
voltage-controlled inverter
title Overview on Grid-Forming Inverter Control Methods
title_full Overview on Grid-Forming Inverter Control Methods
title_fullStr Overview on Grid-Forming Inverter Control Methods
title_full_unstemmed Overview on Grid-Forming Inverter Control Methods
title_short Overview on Grid-Forming Inverter Control Methods
title_sort overview on grid forming inverter control methods
topic droop control
grid-forming inverter
electrical inertia
inverter-dominated power system
virtual synchronous machine
voltage-controlled inverter
url https://www.mdpi.com/1996-1073/13/10/2589
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