Stability assessment of a system comprising a single machine and a virtual oscillator controlled inverter with scalable ratings

Mohammed Masum Siraj Khan; Yashen Lin; Brian Johnson; Mohit Sinha; Sairaj Dhople

doi:10.1109/IECON.2018.8592843

Stability assessment of a system comprising a single machine and a virtual oscillator controlled inverter with scalable ratings

Mohammed Masum Siraj Khan, Yashen Lin, Brian Johnson, Mohit Sinha, Sairaj Dhople

Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

14 Scopus citations

Abstract

We present a small-signal stability study of a coupled synchronous generator and inverter system, where the inverter is controlled by virtual oscillator control (VOC). VOC is a recently proposed grid-forming inverter control strategy, which acts on faster time scales compared to droop control. In our study, we leverage a scalable VOC controller (that is by design agnostic of power levels) to test the system's small-signal stability at different inverter penetration levels. The impact of rotational inertia, reactive power support, and filter parameters on stability is then investigated. Results highlight possible issues that might arise in these mixed machine-inverter systems further motivating the need to develop next generation stabilizing grid-forming controllers.

Original language	English (US)
Title of host publication	Proceedings
Subtitle of host publication	IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	4057-4062
Number of pages	6
ISBN (Electronic)	9781509066841
DOIs	https://doi.org/10.1109/IECON.2018.8592843
State	Published - Dec 26 2018
Event	44th Annual Conference of the IEEE Industrial Electronics Society, IECON 2018 - Washington, United States Duration: Oct 20 2018 → Oct 23 2018

Publication series

Name	Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society

Conference

Conference	44th Annual Conference of the IEEE Industrial Electronics Society, IECON 2018
Country/Territory	United States
City	Washington
Period	10/20/18 → 10/23/18

Bibliographical note

Publisher Copyright:
© 2018 IEEE.

Publisher link

10.1109/IECON.2018.8592843

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Khan, M. M. S., Lin, Y., Johnson, B., Sinha, M., & Dhople, S. (2018). Stability assessment of a system comprising a single machine and a virtual oscillator controlled inverter with scalable ratings. In Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society (pp. 4057-4062). Article 8592843 (Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IECON.2018.8592843

Stability assessment of a system comprising a single machine and a virtual oscillator controlled inverter with scalable ratings. / Khan, Mohammed Masum Siraj; Lin, Yashen; Johnson, Brian et al.
Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society. Institute of Electrical and Electronics Engineers Inc., 2018. p. 4057-4062 8592843 (Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Khan, MMS, Lin, Y, Johnson, B, Sinha, M & Dhople, S 2018, Stability assessment of a system comprising a single machine and a virtual oscillator controlled inverter with scalable ratings. in Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society., 8592843, Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, Institute of Electrical and Electronics Engineers Inc., pp. 4057-4062, 44th Annual Conference of the IEEE Industrial Electronics Society, IECON 2018, Washington, United States, 10/20/18. https://doi.org/10.1109/IECON.2018.8592843

Khan MMS, Lin Y, Johnson B, Sinha M, Dhople S. Stability assessment of a system comprising a single machine and a virtual oscillator controlled inverter with scalable ratings. In Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society. Institute of Electrical and Electronics Engineers Inc. 2018. p. 4057-4062. 8592843. (Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society). doi: 10.1109/IECON.2018.8592843

Khan, Mohammed Masum Siraj ; Lin, Yashen ; Johnson, Brian et al. / Stability assessment of a system comprising a single machine and a virtual oscillator controlled inverter with scalable ratings. Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society. Institute of Electrical and Electronics Engineers Inc., 2018. pp. 4057-4062 (Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society).

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AB - We present a small-signal stability study of a coupled synchronous generator and inverter system, where the inverter is controlled by virtual oscillator control (VOC). VOC is a recently proposed grid-forming inverter control strategy, which acts on faster time scales compared to droop control. In our study, we leverage a scalable VOC controller (that is by design agnostic of power levels) to test the system's small-signal stability at different inverter penetration levels. The impact of rotational inertia, reactive power support, and filter parameters on stability is then investigated. Results highlight possible issues that might arise in these mixed machine-inverter systems further motivating the need to develop next generation stabilizing grid-forming controllers.

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Stability assessment of a system comprising a single machine and a virtual oscillator controlled inverter with scalable ratings

Abstract

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