Modeling and stability analysis of CCIs- and VCIs-based hybrid microgrids operating in grid-connected modes

Yanxue Yu; Josep M. Guerrero; Xuemei Zheng; Lijing Sun; Haoyu Li

doi:10.1109/SEST.2018.8495714

Modeling and stability analysis of CCIs- and VCIs-based hybrid microgrids operating in grid-connected modes

Yanxue Yu, Josep M. Guerrero, Xuemei Zheng, Lijing Sun, Haoyu Li

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

5 Citations (Scopus)

Abstract

Converters serving as power interfaces between distributed generation (DG) sources and loads can operate in current-controlled modes (CCMs) and voltage-controlled modes (VCMs) together in a microgrid. This paper studies the stability issues in a grid-connected hybrid microgrid represented by a current-controlled inverter (CCI) and a voltage-controlled inverter (VCI), whose inner control loops would interact with each other because of the grid line impedance. The impedance and admittance-based passivity stability criterion is applied to analyze the stability issues, so output admittances of the CCI and output impedances of the VCI are modeled and analyzed, respectively. Additionally, a stability analysis model is also developed for multiparallel grid-connected inverters to reveal the instability phenomena between the inverters and the grid. Theoretical and simulation results show that the studied VCI can help to mitigate near-synchronous oscillations and cannot damp harmonic oscillations in higher frequencies.

Original language	English
Title of host publication	Proceedings of the 2018 International Conference on Smart Energy Systems and Technologies, SEST 2018 - Proceedings
Number of pages	6
Publisher	IEEE Press
Publication date	Sept 2018
Pages	1-6
Article number	8495714
ISBN (Print)	978-1-5386-5327-2
ISBN (Electronic)	978-1-5386-5326-5
DOIs	https://doi.org/10.1109/SEST.2018.8495714
Publication status	Published - Sept 2018
Event	2018 International Conference on Smart Energy Systems and Technologies, SEST 2018 - Sevilla, Spain Duration: 10 Sept 2018 → 12 Sept 2018

Conference

Conference	2018 International Conference on Smart Energy Systems and Technologies, SEST 2018
Country/Territory	Spain
City	Sevilla
Period	10/09/2018 → 12/09/2018
Sponsor	endesa

Keywords

current-controlled inverters
grid-connected mode
hybrid microgrid
stability
voltage-controlled inverters

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10.1109/SEST.2018.8495714

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title = "Modeling and stability analysis of CCIs- and VCIs-based hybrid microgrids operating in grid-connected modes",

abstract = "Converters serving as power interfaces between distributed generation (DG) sources and loads can operate in current-controlled modes (CCMs) and voltage-controlled modes (VCMs) together in a microgrid. This paper studies the stability issues in a grid-connected hybrid microgrid represented by a current-controlled inverter (CCI) and a voltage-controlled inverter (VCI), whose inner control loops would interact with each other because of the grid line impedance. The impedance and admittance-based passivity stability criterion is applied to analyze the stability issues, so output admittances of the CCI and output impedances of the VCI are modeled and analyzed, respectively. Additionally, a stability analysis model is also developed for multiparallel grid-connected inverters to reveal the instability phenomena between the inverters and the grid. Theoretical and simulation results show that the studied VCI can help to mitigate near-synchronous oscillations and cannot damp harmonic oscillations in higher frequencies.",

keywords = "current-controlled inverters, grid-connected mode, hybrid microgrid, stability, voltage-controlled inverters",

author = "Yanxue Yu and Guerrero, {Josep M.} and Xuemei Zheng and Lijing Sun and Haoyu Li",

year = "2018",

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Yu, Y, Guerrero, JM, Zheng, X, Sun, L & Li, H 2018, Modeling and stability analysis of CCIs- and VCIs-based hybrid microgrids operating in grid-connected modes. in Proceedings of the 2018 International Conference on Smart Energy Systems and Technologies, SEST 2018 - Proceedings., 8495714, IEEE Press, pp. 1-6, 2018 International Conference on Smart Energy Systems and Technologies, SEST 2018, Sevilla, Spain, 10/09/2018. https://doi.org/10.1109/SEST.2018.8495714

Modeling and stability analysis of CCIs- and VCIs-based hybrid microgrids operating in grid-connected modes. / Yu, Yanxue; Guerrero, Josep M.; Zheng, Xuemei et al.
Proceedings of the 2018 International Conference on Smart Energy Systems and Technologies, SEST 2018 - Proceedings. IEEE Press, 2018. p. 1-6 8495714.

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

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AU - Guerrero, Josep M.

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AU - Li, Haoyu

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N2 - Converters serving as power interfaces between distributed generation (DG) sources and loads can operate in current-controlled modes (CCMs) and voltage-controlled modes (VCMs) together in a microgrid. This paper studies the stability issues in a grid-connected hybrid microgrid represented by a current-controlled inverter (CCI) and a voltage-controlled inverter (VCI), whose inner control loops would interact with each other because of the grid line impedance. The impedance and admittance-based passivity stability criterion is applied to analyze the stability issues, so output admittances of the CCI and output impedances of the VCI are modeled and analyzed, respectively. Additionally, a stability analysis model is also developed for multiparallel grid-connected inverters to reveal the instability phenomena between the inverters and the grid. Theoretical and simulation results show that the studied VCI can help to mitigate near-synchronous oscillations and cannot damp harmonic oscillations in higher frequencies.

AB - Converters serving as power interfaces between distributed generation (DG) sources and loads can operate in current-controlled modes (CCMs) and voltage-controlled modes (VCMs) together in a microgrid. This paper studies the stability issues in a grid-connected hybrid microgrid represented by a current-controlled inverter (CCI) and a voltage-controlled inverter (VCI), whose inner control loops would interact with each other because of the grid line impedance. The impedance and admittance-based passivity stability criterion is applied to analyze the stability issues, so output admittances of the CCI and output impedances of the VCI are modeled and analyzed, respectively. Additionally, a stability analysis model is also developed for multiparallel grid-connected inverters to reveal the instability phenomena between the inverters and the grid. Theoretical and simulation results show that the studied VCI can help to mitigate near-synchronous oscillations and cannot damp harmonic oscillations in higher frequencies.

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KW - stability

KW - voltage-controlled inverters

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ER -

Modeling and stability analysis of CCIs- and VCIs-based hybrid microgrids operating in grid-connected modes

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