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Stability analysis of a PMSG based Virtual Synchronous Machine

Baruwa Muftau, Meghdad Fazeli Orcid Logo, Augustine Egwebe Orcid Logo

Electric Power Systems Research, Volume: 180, Start page: 106170

Swansea University Authors: Meghdad Fazeli Orcid Logo, Augustine Egwebe Orcid Logo

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DOI (Published version): 10.1016/j.epsr.2019.106170

Abstract

This paper proposes a Virtual Synchronous Machine (VSM) strategy for Permanent Magnet Synchronous Generator based wind turbines which enables seamless operation in all operating modes. It guarantees Maximum Power Point Tracking in grid-connected operation, Load Following Power Generation in islanded...

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Published in: Electric Power Systems Research
ISSN: 0378-7796
Published: Elsevier BV 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa53111
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Abstract: This paper proposes a Virtual Synchronous Machine (VSM) strategy for Permanent Magnet Synchronous Generator based wind turbines which enables seamless operation in all operating modes. It guarantees Maximum Power Point Tracking in grid-connected operation, Load Following Power Generation in islanded operation and Low Voltage Ride Through capability during faults. To achieve optimal performance in all operating modes, the stability of the VSM is investigated in the event of small and large perturbations. The small-signal stability analysis of the VSM is conducted using a linearized state space model and the impact of the controllers on the dominant modes are derived using participation factor analysis. The transient stability and dynamic performance of the VSM are analyzed using a non-linear model. Based on this analysis, design guidelines and operational limits of the VSM are established. The results of this analysis are validated using time-domain simulations in MATLAB/SIMULINK.
Keywords: Grid-connection, Islanded, LVRT, MPPT, PMSG, VSM
Start Page: 106170

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