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Power Angle Small-Signal Stability Analysis of Grid-Forming Wind Turbine Inverter Based on VSM Control

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posted on 2019-11-11, 08:06 authored by Liang LuLiang Lu, Ömer Göksu, Nicolaos Antonio CutululisNicolaos Antonio Cutululis
This paper introduces a virtual synchronous machine (VSM) control scheme which is based on a minimized emulation of the model of a synchronous generator (SG) for a grid-forming wind turbine (WT) inverter. Based on this VSM control scheme, state-space representation and block diagram of the small-signal model for the VSM-controlled grid-forming inverter connected to an infinite bus are derived, which are used for small-signal stability analysis of the power angle in the VSM control scheme. This power angle small-signal stability (PAS) analysis is proposed as a simpler way for analyzing the influence on the rotor angle stability of power system from large share of VSM-controlled grid-forming inverters. Influence of parameters in the power loop of the control scheme on the PAS is investigated by analyzing the eigenvalue trajectories of the state matrix.


European Union's Horizon 2020 research and innovation program under grant agreement No. 727680 (TotalControl).

PowerKey (EUDP Project No. 12558)


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Submitting Author's Institution

Technical University of Denmark

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  • Denmark