Harmonic Stability Assessment for Multi-Paralleled, Grid-Connected Inverters

Changwoo Yoon; Xiongfei Wang; Filipe Miguel Faria da Silva; Claus Leth Bak; Frede Blaabjerg

doi:10.1109/PEAC.2014.7038014

Harmonic Stability Assessment for Multi-Paralleled, Grid-Connected Inverters

Changwoo Yoon, Xiongfei Wang, Filipe Miguel Faria da Silva, Claus Leth Bak, Frede Blaabjerg

AAU Energy

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

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Abstract

This paper investigates the dynamic interactions of current controllers for multi-paralleled, grid-connected inverters. The consequent harmonics instability phenomena, which features with oscillations above the fundamental frequency, are evaluated by the impedance-based stability criterion. The frequency range of effective impedance-based stability analysis is first identified. The effect of each inverter on the system harmonic instability is then identified by case studies on different groups of inverters. Lastly, the PSCAD/EMTDC simulations on a system with five passivelydamped, LCL-filtered inverters are performed to verify theoretical analysis. It shows that the impedance-based stability analysis results agree with the time-domain simualtions provided that the frequency of concerns are around the half of the Nyquist sampling frequency.

Original language	English
Title of host publication	Proceedings of the IEEE International Power Electronics and Application Conference and Exposition (IEEE PEAC'14)
Number of pages	6
Publisher	IEEE Press
Publication date	Nov 2014
Pages	1098-1103
ISBN (Print)	978-1-4799-6768-1
DOIs	https://doi.org/10.1109/PEAC.2014.7038014
Publication status	Published - Nov 2014
Event	IEEE International Power Electronics and Application Conference and Exposition (IEEE PEAC'14) - Shanghai, China Duration: 5 Nov 2014 → 8 Nov 2014

Conference

Conference	IEEE International Power Electronics and Application Conference and Exposition (IEEE PEAC'14)
Country/Territory	China
City	Shanghai
Period	05/11/2014 → 08/11/2014

Keywords

Impedance-Based Stability Criterion
PSCAD
LCL-filter
Harmonic Stability
Paralleled Inverters

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Harmonic Stability Assessment for Multi-Paralleled, Grid-Connected InvertersSubmitted manuscript, 1.02 MB

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@inproceedings{e76d0f647c56468592069f4d3d69682c,

title = "Harmonic Stability Assessment for Multi-Paralleled, Grid-Connected Inverters",

abstract = "This paper investigates the dynamic interactions of current controllers for multi-paralleled, grid-connected inverters. The consequent harmonics instability phenomena, which features with oscillations above the fundamental frequency, are evaluated by the impedance-based stability criterion. The frequency range of effective impedance-based stability analysis is first identified. The effect of each inverter on the system harmonic instability is then identified by case studies on different groups of inverters. Lastly, the PSCAD/EMTDC simulations on a system with five passivelydamped, LCL-filtered inverters are performed to verify theoretical analysis. It shows that the impedance-based stability analysis results agree with the time-domain simualtions provided that the frequency of concerns are around the half of the Nyquist sampling frequency.",

keywords = "Impedance-Based Stability Criterion, PSCAD, LCL-filter, Harmonic Stability, Paralleled Inverters",

author = "Changwoo Yoon and Xiongfei Wang and Silva, {Filipe Miguel Faria da} and Bak, {Claus Leth} and Frede Blaabjerg",

year = "2014",

month = nov,

doi = "10.1109/PEAC.2014.7038014",

language = "English",

isbn = "978-1-4799-6768-1",

pages = "1098--1103",

booktitle = "Proceedings of the IEEE International Power Electronics and Application Conference and Exposition (IEEE PEAC'14)",

publisher = "IEEE Press",

note = "IEEE International Power Electronics and Application Conference and Exposition (IEEE PEAC'14) ; Conference date: 05-11-2014 Through 08-11-2014",

}

Yoon, C, Wang, X , Silva, FMFD , Bak, CL & Blaabjerg, F 2014, Harmonic Stability Assessment for Multi-Paralleled, Grid-Connected Inverters. in Proceedings of the IEEE International Power Electronics and Application Conference and Exposition (IEEE PEAC'14) . IEEE Press, pp. 1098-1103, IEEE International Power Electronics and Application Conference and Exposition (IEEE PEAC'14) , Shanghai, China, 05/11/2014. https://doi.org/10.1109/PEAC.2014.7038014

Harmonic Stability Assessment for Multi-Paralleled, Grid-Connected Inverters. / Yoon, Changwoo; Wang, Xiongfei ; Silva, Filipe Miguel Faria da et al.
Proceedings of the IEEE International Power Electronics and Application Conference and Exposition (IEEE PEAC'14) . IEEE Press, 2014. p. 1098-1103.

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

TY - GEN

T1 - Harmonic Stability Assessment for Multi-Paralleled, Grid-Connected Inverters

AU - Yoon, Changwoo

AU - Wang, Xiongfei

AU - Silva, Filipe Miguel Faria da

AU - Bak, Claus Leth

AU - Blaabjerg, Frede

PY - 2014/11

Y1 - 2014/11

N2 - This paper investigates the dynamic interactions of current controllers for multi-paralleled, grid-connected inverters. The consequent harmonics instability phenomena, which features with oscillations above the fundamental frequency, are evaluated by the impedance-based stability criterion. The frequency range of effective impedance-based stability analysis is first identified. The effect of each inverter on the system harmonic instability is then identified by case studies on different groups of inverters. Lastly, the PSCAD/EMTDC simulations on a system with five passivelydamped, LCL-filtered inverters are performed to verify theoretical analysis. It shows that the impedance-based stability analysis results agree with the time-domain simualtions provided that the frequency of concerns are around the half of the Nyquist sampling frequency.

AB - This paper investigates the dynamic interactions of current controllers for multi-paralleled, grid-connected inverters. The consequent harmonics instability phenomena, which features with oscillations above the fundamental frequency, are evaluated by the impedance-based stability criterion. The frequency range of effective impedance-based stability analysis is first identified. The effect of each inverter on the system harmonic instability is then identified by case studies on different groups of inverters. Lastly, the PSCAD/EMTDC simulations on a system with five passivelydamped, LCL-filtered inverters are performed to verify theoretical analysis. It shows that the impedance-based stability analysis results agree with the time-domain simualtions provided that the frequency of concerns are around the half of the Nyquist sampling frequency.

KW - Impedance-Based Stability Criterion

KW - PSCAD

KW - LCL-filter

KW - Harmonic Stability

KW - Paralleled Inverters

U2 - 10.1109/PEAC.2014.7038014

DO - 10.1109/PEAC.2014.7038014

M3 - Article in proceeding

SN - 978-1-4799-6768-1

SP - 1098

EP - 1103

BT - Proceedings of the IEEE International Power Electronics and Application Conference and Exposition (IEEE PEAC'14)

PB - IEEE Press

T2 - IEEE International Power Electronics and Application Conference and Exposition (IEEE PEAC'14)

Y2 - 5 November 2014 through 8 November 2014

ER -

Harmonic Stability Assessment for Multi-Paralleled, Grid-Connected Inverters

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