Passivity Enhancement in RES Based Power Plant with Paralleled Grid-Connected Inverters

Haofeng Bai; Xiongfei Wang; Frede Blaabjerg

doi:10.1109/ECCE.2016.7855334

Passivity Enhancement in RES Based Power Plant with Paralleled Grid-Connected Inverters

Haofeng Bai, Xiongfei Wang, Frede Blaabjerg

AAU Energy

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

2 Citations (Scopus)

Abstract

Harmonic instability is threatening the operation of power plants with multiple grid connected converters in parallel. To analyze and improve the stability of the grid connected converters, the passivity of the output admittance converters is first analyzed in this paper. It is shown that the non-passivity of the output admittance of the converters will make the system unstable under certain grid conditions. Based on the stability analysis, this paper proposes a new method to cancel the nonpassivity of the power plant by using inverters with different power rating and control strategies. Three specific cases, where the LCL parameters, sampling frequency and current control strategies of the paralleled inverters are different, are studied. The results suggest that the grid connected converters with different power ratings and control strategies improve the stability of the power plant as a whole.

Original language	English
Title of host publication	Proceedings of IEEE Energy Conversion Congress and Exposition (ECCE), 2016
Number of pages	8
Publisher	IEEE Press
Publication date	Sept 2016
ISBN (Print)	978-1-5090-0737-0
DOIs	https://doi.org/10.1109/ECCE.2016.7855334
Publication status	Published - Sept 2016
Event	8th Annual IEEE Energy Conversion Congress & Exposition: ECCE 2016 - Milwaukee, WI, United States Duration: 18 Sept 2016 → 22 Sept 2016 http://www.ieee-ecce.org/

Conference

Conference	8th Annual IEEE Energy Conversion Congress & Exposition
Country/Territory	United States
City	Milwaukee, WI
Period	18/09/2016 → 22/09/2016
Sponsor	IEEE, IEEE Industry Applications Society (IAS), IEEE Power Electronics and Industry Applications Societies (PELS)
Internet address	http://www.ieee-ecce.org/

Keywords

Grid connected converter
Stability
Passivity
LCL filter

Access to Document

10.1109/ECCE.2016.7855334

AUB Link

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HARMONY: HARMONY - Harmonic identification, mitigation and control in power electronics based power systems
Blaabjerg, F., Bak, C. L., Wang, X., Beres, R. N., Kwon, J., Gui, Y., Yoon, C. & Ebrahimzadeh, E.
European Research Counsil
01/02/2013 → 28/02/2018
Project: Research

Cite this

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title = "Passivity Enhancement in RES Based Power Plant with Paralleled Grid-Connected Inverters",

abstract = "Harmonic instability is threatening the operation of power plants with multiple grid connected converters in parallel. To analyze and improve the stability of the grid connected converters, the passivity of the output admittance converters is first analyzed in this paper. It is shown that the non-passivity of the output admittance of the converters will make the system unstable under certain grid conditions. Based on the stability analysis, this paper proposes a new method to cancel the nonpassivity of the power plant by using inverters with different power rating and control strategies. Three specific cases, where the LCL parameters, sampling frequency and current control strategies of the paralleled inverters are different, are studied. The results suggest that the grid connected converters with different power ratings and control strategies improve the stability of the power plant as a whole.",

keywords = "Grid connected converter, Stability, Passivity, LCL filter",

author = "Haofeng Bai and Xiongfei Wang and Frede Blaabjerg",

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doi = "10.1109/ECCE.2016.7855334",

language = "English",

isbn = "978-1-5090-0737-0",

booktitle = "Proceedings of IEEE Energy Conversion Congress and Exposition (ECCE), 2016",

publisher = "IEEE Press",

note = " 8th Annual IEEE Energy Conversion Congress & Exposition : ECCE 2016, ECCE 2016 ; Conference date: 18-09-2016 Through 22-09-2016",

url = "http://www.ieee-ecce.org/",

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TY - GEN

T1 - Passivity Enhancement in RES Based Power Plant with Paralleled Grid-Connected Inverters

AU - Bai, Haofeng

AU - Wang, Xiongfei

AU - Blaabjerg, Frede

PY - 2016/9

Y1 - 2016/9

N2 - Harmonic instability is threatening the operation of power plants with multiple grid connected converters in parallel. To analyze and improve the stability of the grid connected converters, the passivity of the output admittance converters is first analyzed in this paper. It is shown that the non-passivity of the output admittance of the converters will make the system unstable under certain grid conditions. Based on the stability analysis, this paper proposes a new method to cancel the nonpassivity of the power plant by using inverters with different power rating and control strategies. Three specific cases, where the LCL parameters, sampling frequency and current control strategies of the paralleled inverters are different, are studied. The results suggest that the grid connected converters with different power ratings and control strategies improve the stability of the power plant as a whole.

AB - Harmonic instability is threatening the operation of power plants with multiple grid connected converters in parallel. To analyze and improve the stability of the grid connected converters, the passivity of the output admittance converters is first analyzed in this paper. It is shown that the non-passivity of the output admittance of the converters will make the system unstable under certain grid conditions. Based on the stability analysis, this paper proposes a new method to cancel the nonpassivity of the power plant by using inverters with different power rating and control strategies. Three specific cases, where the LCL parameters, sampling frequency and current control strategies of the paralleled inverters are different, are studied. The results suggest that the grid connected converters with different power ratings and control strategies improve the stability of the power plant as a whole.

KW - Grid connected converter

KW - Stability

KW - Passivity

KW - LCL filter

U2 - 10.1109/ECCE.2016.7855334

DO - 10.1109/ECCE.2016.7855334

M3 - Article in proceeding

SN - 978-1-5090-0737-0

BT - Proceedings of IEEE Energy Conversion Congress and Exposition (ECCE), 2016

PB - IEEE Press

T2 - 8th Annual IEEE Energy Conversion Congress & Exposition

Y2 - 18 September 2016 through 22 September 2016

ER -

Passivity Enhancement in RES Based Power Plant with Paralleled Grid-Connected Inverters

Abstract

Conference

Keywords

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AUB Link

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Projects

HARMONY: HARMONY - Harmonic identification, mitigation and control in power electronics based power systems

Cite this