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Impedance-Based Stability Evaluation of Virtual Synchronous Machine Implementations in Converter Controllers.pdf (1.526Mb)
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Title
Impedance-Based Stability Evaluation of Virtual Synchronous Machine Implementations in Converter Controllers
Author
Unamuno, Eneko ccMondragon Unibertsitatea
Barrena, Jon Andoni ccMondragon Unibertsitatea
Author (from another institution)
Rygg, Atle
Amin, Mohammad
Molinas, Marta
Research Group
Sistemas electrónicos de potencia aplicados al control de la energía eléctrica
Published Date
2018
Publisher
IEEE
Keywords
Mathematical model
Power system stability
Impedance
Voltage control ... [+]
Mathematical model
Power system stability
Impedance
Voltage control
Synchronous machines
Stability criteria [-]
Abstract
This paper presents a stability evaluation of two Virtual Synchronous Machine (VSM) implementations in the control of Voltage Source Converters (VSCs): a current-controlled (CCVSM) and a voltage-contr ... [+]
This paper presents a stability evaluation of two Virtual Synchronous Machine (VSM) implementations in the control of Voltage Source Converters (VSCs): a current-controlled (CCVSM) and a voltage-controlled (VCVSM) version of the VSM. The performances of the two control implementations are analyzed under power reference and grid frequency variations and the evaluation of their stability properties is carried out by adopting the impedance-based stability analysis. The results of the dq impedance analysis of the two VSMs implementations reveal a clear differentiation between the CCVSM and the VCVSM, particularly in the very low frequency range, even if a close similarity is observed in the time domain responses. The dq impedances of both implementations show an RL behaviour in the medium frequency range, but when inspecting the stability margin on the Nyquist plot, the VCVSM appears to have a lower stability margin than the CCVSM from the intersection with the unit circle. [-]
URI
https://hdl.handle.net/20.500.11984/5897
Publisher’s version
https://doi.org/10.23919/IPEC.2018.8507905
ISBN
9784886864055
Published at
International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)  Niigata, Japan. 20-24 May 2018. Pp. 759-766. IEEE, 2018
Document type
Conference paper
Version
Postprint – Accepted Manuscript
Rights
© 2018 IPEC
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Open Access
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  • Conferences - Engineering [242]

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