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

Power Systems Engineering

Research output: Contribution to conference › Paper › peer-review

12 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	American English
Pages	4057-4062
Number of pages	6
DOIs	https://doi.org/10.1109/IECON.2018.8592843 https://doi.org/10.1109/IECON.2018.8592843
State	Published - 26 Dec 2018
Event	44th Annual Conference of the IEEE Industrial Electronics Society, IECON 2018 - Washington, United States Duration: 20 Oct 2018 → 23 Oct 2018

Conference

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

Bibliographical note

Publisher Copyright:
© 2018 IEEE.

NREL Publication Number

NREL/CP-5D00-71634

Keywords

small-signal
stability
synchronous generator
virtual oscillator control
VOC

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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. 4057-4062. Paper presented at 44th Annual Conference of the IEEE Industrial Electronics Society, IECON 2018, Washington, United States. https://doi.org/10.1109/IECON.2018.8592843, https://doi.org/10.1109/IECON.2018.8592843

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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.",

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author = "Khan, {Mohammed Masum Siraj} and Yashen Lin and Brian Johnson and Mohit Sinha and Sairaj Dhople",

note = "Publisher Copyright: {\textcopyright} 2018 IEEE.; 44th Annual Conference of the IEEE Industrial Electronics Society, IECON 2018 ; Conference date: 20-10-2018 Through 23-10-2018",

year = "2018",

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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', Paper presented at 44th Annual Conference of the IEEE Industrial Electronics Society, IECON 2018, Washington, United States, 20/10/18 - 23/10/18 pp. 4057-4062. https://doi.org/10.1109/IECON.2018.8592843, 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.
2018. 4057-4062 Paper presented at 44th Annual Conference of the IEEE Industrial Electronics Society, IECON 2018, Washington, United States.

Research output: Contribution to conference › Paper › peer-review

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T1 - Stability Assessment of a System Comprising a Single Machine and a Virtual Oscillator Controlled Inverter with Scalable Ratings

AU - Khan, Mohammed Masum Siraj

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AU - Dhople, Sairaj

PY - 2018/12/26

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N2 - 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.

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

Conference

Bibliographical note

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Keywords

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