Frequency Scanning-Based Contributions Identification of Current Control Loop and PLL on DQ Impedance Characteristics of Three-Phase Grid-Connected Inverter

Weihua Zhou; Yanbo Wang; Raymundo E. Torres-Olguin; Zhe Chen

doi:10.1109/ECCE44975.2020.9235356

Frequency Scanning-Based Contributions Identification of Current Control Loop and PLL on DQ Impedance Characteristics of Three-Phase Grid-Connected Inverter

Weihua Zhou^*, Yanbo Wang, Raymundo E. Torres-Olguin, Zhe Chen

^*Corresponding author for this work

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

2 Citations (Scopus)

74 Downloads (Pure)

Abstract

Complex space vector and complex transfer function theory is used to theoretically establish the dq impedance model of current-controlled grid-connected inverter (GCI) with considering phase-locked loop (PLL) dynamics, where contributions of current control loop and PLL on dq impedance characteristics are clearly identified. On its basis, this paper presents a frequency scanning based black box identification method of the contributions of current control loop and PLL on dq-domain impedance characteristics of the GCI. Three-phase small-signal voltage vector perturbation which is aligned with point of common coupling (PCC) voltage vector is injected into PCC in series way, so that grid current responses which are only determined by the dynamics of current control loop are excited. In addition, parallel current injection to excite PCC voltage responses is theoretically proved to be not applicable for extracting the dynamics of current control loop and PLL. The effectiveness of the presented dq-domain impedance characteristics division method is verified by both frequency scanning results and time-domain simulation results obtained in Matlab/Simulink environment.
impedance characteristics division method is verified
by both frequency scanning results and time-domain simulation
results obtained in Matlab/Simulink environment.

Original language	English
Title of host publication	The 12th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2020)
Number of pages	8
Publisher	IEEE
Publication date	30 Oct 2020
Pages	3104-3111
ISBN (Print)	978-1-7281-5827-3
ISBN (Electronic)	978-1-7281-5826-6
DOIs	https://doi.org/10.1109/ECCE44975.2020.9235356
Publication status	Published - 30 Oct 2020
Event	2020 IEEE Energy Conversion Congress and Exposition (ECCE 2020) - Detroit, United States Duration: 11 Oct 2020 → 15 Oct 2020 https://www.ieee-ecce.org/2020/

Conference

Conference	2020 IEEE Energy Conversion Congress and Exposition (ECCE 2020)
Country/Territory	United States
City	Detroit
Period	11/10/2020 → 15/10/2020
Internet address	https://www.ieee-ecce.org/2020/

Series	IEEE Energy Conversion Congress and Exposition
ISSN	2329-3721

Keywords

Current control loop
dq-domain impedance
frequency scanning
grid-connected inverter
impedance characteristics division
phase-locked loop

Access to Document

10.1109/ECCE44975.2020.9235356

Accepted_author_manuscriptAccepted author manuscript, 3.8 MB

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COPE: Voltage Control and Protection for a Grid towards 100 Power Electronics and Cable Network
Chen, Z., Fang, J., Su, C. & Miltersen, A. H.
ForskEL, EUDP
01/10/2017 → 03/12/2020
Project: Research

Cite this

Zhou, Weihua ; Wang, Yanbo ; E. Torres-Olguin, Raymundo et al. / Frequency Scanning-Based Contributions Identification of Current Control Loop and PLL on DQ Impedance Characteristics of Three-Phase Grid-Connected Inverter. The 12th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2020). IEEE, 2020. pp. 3104-3111 (IEEE Energy Conversion Congress and Exposition).

@inproceedings{f78c0108e48b421fb0535cf006a54432,

title = "Frequency Scanning-Based Contributions Identification of Current Control Loop and PLL on DQ Impedance Characteristics of Three-Phase Grid-Connected Inverter",

abstract = "Complex space vector and complex transfer function theory is used to theoretically establish the dq impedance model of current-controlled grid-connected inverter (GCI) with considering phase-locked loop (PLL) dynamics, where contributions of current control loop and PLL on dq impedance characteristics are clearly identified. On its basis, this paper presents a frequency scanning based black box identification method of the contributions of current control loop and PLL on dq-domain impedance characteristics of the GCI. Three-phase small-signal voltage vector perturbation which is aligned with point of common coupling (PCC) voltage vector is injected into PCC in series way, so that grid current responses which are only determined by the dynamics of current control loop are excited. In addition, parallel current injection to excite PCC voltage responses is theoretically proved to be not applicable for extracting the dynamics of current control loop and PLL. The effectiveness of the presented dq-domain impedance characteristics division method is verified by both frequency scanning results and time-domain simulation results obtained in Matlab/Simulink environment.impedance characteristics division method is verifiedby both frequency scanning results and time-domain simulationresults obtained in Matlab/Simulink environment.",

keywords = "Current control loop, dq-domain impedance, frequency scanning, grid-connected inverter, impedance characteristics division, phase-locked loop",

author = "Weihua Zhou and Yanbo Wang and {E. Torres-Olguin}, Raymundo and Zhe Chen",

year = "2020",

month = oct,

day = "30",

doi = "10.1109/ECCE44975.2020.9235356",

language = "English",

isbn = "978-1-7281-5827-3",

series = "IEEE Energy Conversion Congress and Exposition",

pages = "3104--3111",

booktitle = "The 12th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2020)",

publisher = "IEEE",

address = "United States",

note = "2020 IEEE Energy Conversion Congress and Exposition (ECCE 2020), ECCE 2020 ; Conference date: 11-10-2020 Through 15-10-2020",

url = "https://www.ieee-ecce.org/2020/",

}

Zhou, W, Wang, Y, E. Torres-Olguin, R & Chen, Z 2020, Frequency Scanning-Based Contributions Identification of Current Control Loop and PLL on DQ Impedance Characteristics of Three-Phase Grid-Connected Inverter. in The 12th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2020). IEEE, IEEE Energy Conversion Congress and Exposition, pp. 3104-3111, 2020 IEEE Energy Conversion Congress and Exposition (ECCE 2020), Detroit, Michigan, United States, 11/10/2020. https://doi.org/10.1109/ECCE44975.2020.9235356

Frequency Scanning-Based Contributions Identification of Current Control Loop and PLL on DQ Impedance Characteristics of Three-Phase Grid-Connected Inverter. / Zhou, Weihua; Wang, Yanbo; E. Torres-Olguin, Raymundo et al.
The 12th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2020). IEEE, 2020. p. 3104-3111 (IEEE Energy Conversion Congress and Exposition).

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

TY - GEN

T1 - Frequency Scanning-Based Contributions Identification of Current Control Loop and PLL on DQ Impedance Characteristics of Three-Phase Grid-Connected Inverter

AU - Zhou, Weihua

AU - Wang, Yanbo

AU - E. Torres-Olguin, Raymundo

AU - Chen, Zhe

PY - 2020/10/30

Y1 - 2020/10/30

N2 - Complex space vector and complex transfer function theory is used to theoretically establish the dq impedance model of current-controlled grid-connected inverter (GCI) with considering phase-locked loop (PLL) dynamics, where contributions of current control loop and PLL on dq impedance characteristics are clearly identified. On its basis, this paper presents a frequency scanning based black box identification method of the contributions of current control loop and PLL on dq-domain impedance characteristics of the GCI. Three-phase small-signal voltage vector perturbation which is aligned with point of common coupling (PCC) voltage vector is injected into PCC in series way, so that grid current responses which are only determined by the dynamics of current control loop are excited. In addition, parallel current injection to excite PCC voltage responses is theoretically proved to be not applicable for extracting the dynamics of current control loop and PLL. The effectiveness of the presented dq-domain impedance characteristics division method is verified by both frequency scanning results and time-domain simulation results obtained in Matlab/Simulink environment.impedance characteristics division method is verifiedby both frequency scanning results and time-domain simulationresults obtained in Matlab/Simulink environment.

AB - Complex space vector and complex transfer function theory is used to theoretically establish the dq impedance model of current-controlled grid-connected inverter (GCI) with considering phase-locked loop (PLL) dynamics, where contributions of current control loop and PLL on dq impedance characteristics are clearly identified. On its basis, this paper presents a frequency scanning based black box identification method of the contributions of current control loop and PLL on dq-domain impedance characteristics of the GCI. Three-phase small-signal voltage vector perturbation which is aligned with point of common coupling (PCC) voltage vector is injected into PCC in series way, so that grid current responses which are only determined by the dynamics of current control loop are excited. In addition, parallel current injection to excite PCC voltage responses is theoretically proved to be not applicable for extracting the dynamics of current control loop and PLL. The effectiveness of the presented dq-domain impedance characteristics division method is verified by both frequency scanning results and time-domain simulation results obtained in Matlab/Simulink environment.impedance characteristics division method is verifiedby both frequency scanning results and time-domain simulationresults obtained in Matlab/Simulink environment.

KW - Current control loop

KW - dq-domain impedance

KW - frequency scanning

KW - grid-connected inverter

KW - impedance characteristics division

KW - phase-locked loop

U2 - 10.1109/ECCE44975.2020.9235356

DO - 10.1109/ECCE44975.2020.9235356

M3 - Article in proceeding

SN - 978-1-7281-5827-3

T3 - IEEE Energy Conversion Congress and Exposition

SP - 3104

EP - 3111

BT - The 12th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2020)

PB - IEEE

T2 - 2020 IEEE Energy Conversion Congress and Exposition (ECCE 2020)

Y2 - 11 October 2020 through 15 October 2020

ER -

Zhou W, Wang Y, E. Torres-Olguin R, Chen Z. Frequency Scanning-Based Contributions Identification of Current Control Loop and PLL on DQ Impedance Characteristics of Three-Phase Grid-Connected Inverter. In The 12th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2020). IEEE. 2020. p. 3104-3111. (IEEE Energy Conversion Congress and Exposition). doi: 10.1109/ECCE44975.2020.9235356

Frequency Scanning-Based Contributions Identification of Current Control Loop and PLL on DQ Impedance Characteristics of Three-Phase Grid-Connected Inverter

Abstract

Conference

Keywords

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Projects

COPE: Voltage Control and Protection for a Grid towards 100 Power Electronics and Cable Network

Cite this