Impedance Modeling for Quadrature-Axis Active Damping of PLL Dynamics

Feifan Chen; Liang Zhao; Lennart Harnefors; Xiongfei Wang

doi:10.1109/COMPEL53829.2022.9830001

Impedance Modeling for Quadrature-Axis Active Damping of PLL Dynamics

Feifan Chen, Liang Zhao, Lennart Harnefors, Xiongfei Wang

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

3 Citations (Scopus)

Abstract

When grid-following voltage source converters (VSCs) operate in inverter mode, the phase-locked loop (PLL) dynamics introduce a negative-real-part impedance, which may lead to the instability of the closed-loop system, especially in a weak-grid connection. This undesirable property of the PLL may be offset by so-called active damping. Nevertheless, the interaction between the active damping and the adverse PLL impact is not fully understood. To this end, the properties of different active-damping methods are analyzed, with the focus on the q-to-q coupling of the input admittance. One important finding is that adding an integrator to the q-axis active damper can improve the system performance in a weak-grid connection. Simulations and experimental results verify the theoretical analysis.

Original language	English
Title of host publication	2022 IEEE 23rd Workshop on Control and Modeling for Power Electronics, COMPEL 2022
Publisher	IEEE
Publication date	2022
ISBN (Electronic)	9781665410816
DOIs	https://doi.org/10.1109/COMPEL53829.2022.9830001
Publication status	Published - 2022
Event	23rd IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2022 - Tel-Aviv, Israel Duration: 20 Jun 2022 → 23 Jun 2022

Conference

Conference	23rd IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2022
Country/Territory	Israel
City	Tel-Aviv
Period	20/06/2022 → 23/06/2022
Sponsor	HIL Academy, Payton Planar, Pazy Excelling in Science, SolarEdge, TDK, Typhoon HL

Series	Proceedings of the IEEE Workshop on Computers in Power Electronics, COMPEL
Volume	2022-June
ISSN	1093-5142

Bibliographical note

Publisher Copyright:
© 2022 IEEE.

Keywords

active damping
impedance
phase-locked loop
weak grids

Access to Document

10.1109/COMPEL53829.2022.9830001

AUB Link

Search for the material in Aalborg University Library's search engine

Cite this

@inproceedings{7fcd1101663a49918d5e7e00a0a66af6,

title = "Impedance Modeling for Quadrature-Axis Active Damping of PLL Dynamics",

abstract = "When grid-following voltage source converters (VSCs) operate in inverter mode, the phase-locked loop (PLL) dynamics introduce a negative-real-part impedance, which may lead to the instability of the closed-loop system, especially in a weak-grid connection. This undesirable property of the PLL may be offset by so-called active damping. Nevertheless, the interaction between the active damping and the adverse PLL impact is not fully understood. To this end, the properties of different active-damping methods are analyzed, with the focus on the q-to-q coupling of the input admittance. One important finding is that adding an integrator to the q-axis active damper can improve the system performance in a weak-grid connection. Simulations and experimental results verify the theoretical analysis.",

keywords = "active damping, impedance, phase-locked loop, weak grids",

author = "Feifan Chen and Liang Zhao and Lennart Harnefors and Xiongfei Wang",

note = "Publisher Copyright: {\textcopyright} 2022 IEEE.; 23rd IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2022 ; Conference date: 20-06-2022 Through 23-06-2022",

year = "2022",

doi = "10.1109/COMPEL53829.2022.9830001",

language = "English",

series = "Proceedings of the IEEE Workshop on Computers in Power Electronics, COMPEL",

publisher = "IEEE",

booktitle = "2022 IEEE 23rd Workshop on Control and Modeling for Power Electronics, COMPEL 2022",

address = "United States",

}

Chen, F, Zhao, L, Harnefors, L & Wang, X 2022, Impedance Modeling for Quadrature-Axis Active Damping of PLL Dynamics. in 2022 IEEE 23rd Workshop on Control and Modeling for Power Electronics, COMPEL 2022. IEEE, Proceedings of the IEEE Workshop on Computers in Power Electronics, COMPEL, vol. 2022-June, 23rd IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2022, Tel-Aviv, Israel, 20/06/2022. https://doi.org/10.1109/COMPEL53829.2022.9830001

Impedance Modeling for Quadrature-Axis Active Damping of PLL Dynamics. / Chen, Feifan; Zhao, Liang; Harnefors, Lennart et al.
2022 IEEE 23rd Workshop on Control and Modeling for Power Electronics, COMPEL 2022. IEEE, 2022. (Proceedings of the IEEE Workshop on Computers in Power Electronics, COMPEL, Vol. 2022-June).

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

TY - GEN

T1 - Impedance Modeling for Quadrature-Axis Active Damping of PLL Dynamics

AU - Chen, Feifan

AU - Zhao, Liang

AU - Harnefors, Lennart

AU - Wang, Xiongfei

PY - 2022

Y1 - 2022

N2 - When grid-following voltage source converters (VSCs) operate in inverter mode, the phase-locked loop (PLL) dynamics introduce a negative-real-part impedance, which may lead to the instability of the closed-loop system, especially in a weak-grid connection. This undesirable property of the PLL may be offset by so-called active damping. Nevertheless, the interaction between the active damping and the adverse PLL impact is not fully understood. To this end, the properties of different active-damping methods are analyzed, with the focus on the q-to-q coupling of the input admittance. One important finding is that adding an integrator to the q-axis active damper can improve the system performance in a weak-grid connection. Simulations and experimental results verify the theoretical analysis.

AB - When grid-following voltage source converters (VSCs) operate in inverter mode, the phase-locked loop (PLL) dynamics introduce a negative-real-part impedance, which may lead to the instability of the closed-loop system, especially in a weak-grid connection. This undesirable property of the PLL may be offset by so-called active damping. Nevertheless, the interaction between the active damping and the adverse PLL impact is not fully understood. To this end, the properties of different active-damping methods are analyzed, with the focus on the q-to-q coupling of the input admittance. One important finding is that adding an integrator to the q-axis active damper can improve the system performance in a weak-grid connection. Simulations and experimental results verify the theoretical analysis.

KW - active damping

KW - impedance

KW - phase-locked loop

KW - weak grids

UR - http://www.scopus.com/inward/record.url?scp=85135208701&partnerID=8YFLogxK

U2 - 10.1109/COMPEL53829.2022.9830001

DO - 10.1109/COMPEL53829.2022.9830001

M3 - Article in proceeding

AN - SCOPUS:85135208701

T3 - Proceedings of the IEEE Workshop on Computers in Power Electronics, COMPEL

BT - 2022 IEEE 23rd Workshop on Control and Modeling for Power Electronics, COMPEL 2022

PB - IEEE

T2 - 23rd IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2022

Y2 - 20 June 2022 through 23 June 2022

ER -

Impedance Modeling for Quadrature-Axis Active Damping of PLL Dynamics

Abstract

Conference

Bibliographical note

Keywords

Access to Document

AUB Link

Other files and links

Fingerprint

Cite this