Impact of a virtual resistor on the input admittance of a grid-connected inverter

Arwindra Rizqiawan; Goro Fujita; Toshihisa Funabashi; Masakatsu Nomura

doi:10.1002/tee.21839

Impact of a virtual resistor on the input admittance of a grid-connected inverter

Arwindra Rizqiawan, Goro Fujita, Toshihisa Funabashi, Masakatsu Nomura

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

A grid-connected inverter offers good operation and controllability; however, there is a risk of local instabilities due to particular control schemes. As long as the input admittance is positive at a particular resonance frequency, the risk of local instability can be suppressed. In this paper, an attempt to improve the input admittance of the grid-connected inverter (GCI)[vnsn1] using a virtual resistor is proposed. The impact of the virtual resistor on the inverter's passivity is analyzed by observing the input admittance of the inverter. Numerical analysis shows that the employment of the virtual resistor gives better input admittance to the GCI, particularly in the low-frequency regions.

Original language	English
Pages (from-to)	190-198
Number of pages	9
Journal	IEEJ Transactions on Electrical and Electronic Engineering
Volume	8
Issue number	2
DOIs	https://doi.org/10.1002/tee.21839
Publication status	Published - 2013 Mar

Keywords

Grid-connected inverter
Input admittance
Virtual resistor

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1002/tee.21839

Cite this

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title = "Impact of a virtual resistor on the input admittance of a grid-connected inverter",

abstract = "A grid-connected inverter offers good operation and controllability; however, there is a risk of local instabilities due to particular control schemes. As long as the input admittance is positive at a particular resonance frequency, the risk of local instability can be suppressed. In this paper, an attempt to improve the input admittance of the grid-connected inverter (GCI)[vnsn1] using a virtual resistor is proposed. The impact of the virtual resistor on the inverter's passivity is analyzed by observing the input admittance of the inverter. Numerical analysis shows that the employment of the virtual resistor gives better input admittance to the GCI, particularly in the low-frequency regions.",

keywords = "Grid-connected inverter, Input admittance, Virtual resistor",

author = "Arwindra Rizqiawan and Goro Fujita and Toshihisa Funabashi and Masakatsu Nomura",

note = "Funding Information: Acknowledgments This work was supported by the National Natural Science Foundation of China (61073116, 61272152 and 60903105), Scientific Research Foundation for Doctor of Anhui University (02203104), Natural Science Foundation of Anhui Higher Education Institutions of China (J2012A010, KJ2012A008). Funding Information: This work was supported by the National Natural Science Foundation of China (61073116, 61272152 and 60903105), Scientific Research Foundation for Doctor of Anhui University (02203104), Natural Science Foundation of Anhui Higher Education Institutions of China (J2012A010, KJ2012A008).",

year = "2013",

month = mar,

doi = "10.1002/tee.21839",

language = "English",

volume = "8",

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journal = "IEEJ Transactions on Electrical and Electronic Engineering",

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AU - Rizqiawan, Arwindra

AU - Fujita, Goro

AU - Funabashi, Toshihisa

AU - Nomura, Masakatsu

N1 - Funding Information: Acknowledgments This work was supported by the National Natural Science Foundation of China (61073116, 61272152 and 60903105), Scientific Research Foundation for Doctor of Anhui University (02203104), Natural Science Foundation of Anhui Higher Education Institutions of China (J2012A010, KJ2012A008). Funding Information: This work was supported by the National Natural Science Foundation of China (61073116, 61272152 and 60903105), Scientific Research Foundation for Doctor of Anhui University (02203104), Natural Science Foundation of Anhui Higher Education Institutions of China (J2012A010, KJ2012A008).

PY - 2013/3

Y1 - 2013/3

N2 - A grid-connected inverter offers good operation and controllability; however, there is a risk of local instabilities due to particular control schemes. As long as the input admittance is positive at a particular resonance frequency, the risk of local instability can be suppressed. In this paper, an attempt to improve the input admittance of the grid-connected inverter (GCI)[vnsn1] using a virtual resistor is proposed. The impact of the virtual resistor on the inverter's passivity is analyzed by observing the input admittance of the inverter. Numerical analysis shows that the employment of the virtual resistor gives better input admittance to the GCI, particularly in the low-frequency regions.

AB - A grid-connected inverter offers good operation and controllability; however, there is a risk of local instabilities due to particular control schemes. As long as the input admittance is positive at a particular resonance frequency, the risk of local instability can be suppressed. In this paper, an attempt to improve the input admittance of the grid-connected inverter (GCI)[vnsn1] using a virtual resistor is proposed. The impact of the virtual resistor on the inverter's passivity is analyzed by observing the input admittance of the inverter. Numerical analysis shows that the employment of the virtual resistor gives better input admittance to the GCI, particularly in the low-frequency regions.

KW - Grid-connected inverter

KW - Input admittance

KW - Virtual resistor

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Impact of a virtual resistor on the input admittance of a grid-connected inverter

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Keywords

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