Virtual Synchronous Generator-Based Control of Voltage Source Converters for Weak AC Grids

Javad Khazaei; Arash Asrari; Poria Fajri; Peter Idowu

doi:10.1109/PESGM40551.2019.8973698

Virtual Synchronous Generator-Based Control of Voltage Source Converters for Weak AC Grids

Javad Khazaei, Arash Asrari, Poria Fajri, Peter Idowu

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

Abstract

Vector current control is the most commonly used approach for converters in renewable energy generation systems. Unfortunately, the conventional vector current control for the VSCs is unable to synchronize to the weak ac grid. This paper derives the impedance model of a vector controlled voltage source converter (VSC) enhanced with a virtual synchronous generator (VSG) loop for weak ac grid connections. The impedance modeling includes the dynamic models of the phase-locked loop (PLL), ac side filter, inner current loops, outer power loops, and the VSG loop. Eigen loci of the impedance is used to analyze the stability of the control under different grid strengths. In addition, sensitivity of PLL gains, virtual inertia gains, and dc-link capacitor value on overall system stability is evaluated using frequency-domain analysis.

Original language	English (US)
Title of host publication	2019 IEEE Power and Energy Society General Meeting, PESGM 2019
Publisher	IEEE Computer Society
ISBN (Electronic)	9781728119816
DOIs	https://doi.org/10.1109/PESGM40551.2019.8973698
State	Published - Aug 2019
Event	2019 IEEE Power and Energy Society General Meeting, PESGM 2019 - Atlanta, United States Duration: Aug 4 2019 → Aug 8 2019

Publication series

Name	IEEE Power and Energy Society General Meeting
Volume	2019-August
ISSN (Print)	1944-9925
ISSN (Electronic)	1944-9933

Conference

Conference	2019 IEEE Power and Energy Society General Meeting, PESGM 2019
Country/Territory	United States
City	Atlanta
Period	8/4/19 → 8/8/19

All Science Journal Classification (ASJC) codes

Energy Engineering and Power Technology
Nuclear Energy and Engineering
Renewable Energy, Sustainability and the Environment
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1109/PESGM40551.2019.8973698

Cite this

@inproceedings{fda8a57760294a368fef55827a603665,

title = "Virtual Synchronous Generator-Based Control of Voltage Source Converters for Weak AC Grids",

abstract = "Vector current control is the most commonly used approach for converters in renewable energy generation systems. Unfortunately, the conventional vector current control for the VSCs is unable to synchronize to the weak ac grid. This paper derives the impedance model of a vector controlled voltage source converter (VSC) enhanced with a virtual synchronous generator (VSG) loop for weak ac grid connections. The impedance modeling includes the dynamic models of the phase-locked loop (PLL), ac side filter, inner current loops, outer power loops, and the VSG loop. Eigen loci of the impedance is used to analyze the stability of the control under different grid strengths. In addition, sensitivity of PLL gains, virtual inertia gains, and dc-link capacitor value on overall system stability is evaluated using frequency-domain analysis.",

author = "Javad Khazaei and Arash Asrari and Poria Fajri and Peter Idowu",

note = "Publisher Copyright: {\textcopyright} 2019 IEEE.; 2019 IEEE Power and Energy Society General Meeting, PESGM 2019 ; Conference date: 04-08-2019 Through 08-08-2019",

year = "2019",

month = aug,

doi = "10.1109/PESGM40551.2019.8973698",

language = "English (US)",

series = "IEEE Power and Energy Society General Meeting",

publisher = "IEEE Computer Society",

booktitle = "2019 IEEE Power and Energy Society General Meeting, PESGM 2019",

address = "United States",

}

Khazaei, J, Asrari, A, Fajri, P & Idowu, P 2019, Virtual Synchronous Generator-Based Control of Voltage Source Converters for Weak AC Grids. in 2019 IEEE Power and Energy Society General Meeting, PESGM 2019., 8973698, IEEE Power and Energy Society General Meeting, vol. 2019-August, IEEE Computer Society, 2019 IEEE Power and Energy Society General Meeting, PESGM 2019, Atlanta, United States, 8/4/19. https://doi.org/10.1109/PESGM40551.2019.8973698

Virtual Synchronous Generator-Based Control of Voltage Source Converters for Weak AC Grids. / Khazaei, Javad; Asrari, Arash; Fajri, Poria et al.
2019 IEEE Power and Energy Society General Meeting, PESGM 2019. IEEE Computer Society, 2019. 8973698 (IEEE Power and Energy Society General Meeting; Vol. 2019-August).

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

TY - GEN

T1 - Virtual Synchronous Generator-Based Control of Voltage Source Converters for Weak AC Grids

AU - Khazaei, Javad

AU - Asrari, Arash

AU - Fajri, Poria

AU - Idowu, Peter

PY - 2019/8

Y1 - 2019/8

N2 - Vector current control is the most commonly used approach for converters in renewable energy generation systems. Unfortunately, the conventional vector current control for the VSCs is unable to synchronize to the weak ac grid. This paper derives the impedance model of a vector controlled voltage source converter (VSC) enhanced with a virtual synchronous generator (VSG) loop for weak ac grid connections. The impedance modeling includes the dynamic models of the phase-locked loop (PLL), ac side filter, inner current loops, outer power loops, and the VSG loop. Eigen loci of the impedance is used to analyze the stability of the control under different grid strengths. In addition, sensitivity of PLL gains, virtual inertia gains, and dc-link capacitor value on overall system stability is evaluated using frequency-domain analysis.

AB - Vector current control is the most commonly used approach for converters in renewable energy generation systems. Unfortunately, the conventional vector current control for the VSCs is unable to synchronize to the weak ac grid. This paper derives the impedance model of a vector controlled voltage source converter (VSC) enhanced with a virtual synchronous generator (VSG) loop for weak ac grid connections. The impedance modeling includes the dynamic models of the phase-locked loop (PLL), ac side filter, inner current loops, outer power loops, and the VSG loop. Eigen loci of the impedance is used to analyze the stability of the control under different grid strengths. In addition, sensitivity of PLL gains, virtual inertia gains, and dc-link capacitor value on overall system stability is evaluated using frequency-domain analysis.

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U2 - 10.1109/PESGM40551.2019.8973698

DO - 10.1109/PESGM40551.2019.8973698

M3 - Conference contribution

AN - SCOPUS:85079033383

T3 - IEEE Power and Energy Society General Meeting

BT - 2019 IEEE Power and Energy Society General Meeting, PESGM 2019

PB - IEEE Computer Society

T2 - 2019 IEEE Power and Energy Society General Meeting, PESGM 2019

Y2 - 4 August 2019 through 8 August 2019

ER -

Virtual Synchronous Generator-Based Control of Voltage Source Converters for Weak AC Grids

Abstract

Publication series

Conference

All Science Journal Classification (ASJC) codes

UN SDGs

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