10.36227/techrxiv.10259657.v1
Liang Lu
Liang
Lu
Ömer Göksu
Ömer
Göksu
Nicolaos Antonio Cutululis
Nicolaos Antonio
Cutululis
Power Angle Small-Signal Stability Analysis of Grid-Forming Wind Turbine Inverter Based on VSM Control
TechRxiv
2019
grid-forming WT inverter
virtual synchronous machine (VSM) control
rotor angle stability
power angle small-signal stability (PAS)
eigenvalue trajectory
2019-11-11 08:06:47
Preprint
https://www.techrxiv.org/articles/preprint/Power_Angle_Small-Signal_Stability_Analysis_of_Grid-Forming_Wind_Turbine_Inverter_Based_on_VSM_Control/10259657
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.