Extremum Seeking Control based Resonant Frequency Estimation for a Grid-Tied Inverter with LCL Filter

Yuheng Wu; Mohammad Mahmud; Fei Diao; Yue Zhao; Radha Krishna Moorthy; Madhu Sudhan Chinthavali

doi:10.1109/ECCE47101.2021.9595405

Extremum Seeking Control based Resonant Frequency Estimation for a Grid-Tied Inverter with LCL Filter

Yuheng Wu
, Mohammad Mahmud
, Fei Diao
, Yue Zhao
, Radha Krishna Moorthy
, Madhu Sudhan Chinthavali

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The resonant frequency of the LCL filter can drift away from its nominal value due to the circuit components parameters uncertainty and the grid-side impedance, which will further deteriorate the robustness of the system and damping performance. Conventional online resonant frequency estimation schemes, such as discrete Fourier transformation and recursive prediction error, require a significant amount of computational power to implement, which may even need to reduce the sampling and control frequency of the inverter controller. In this work, an extremum seeking control based resonant frequency estimation scheme is proposed, which can provide an accurate estimate of the resonant frequency with notably reduced execution time. Simulations, hardware-in-the-loop (HIL) tests, and experimental tests on a single-phase grid-tied inverter are conducted to validate the effectiveness of the proposed scheme.

Original language	English
Title of host publication	2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	882-886
Number of pages	5
ISBN (Electronic)	9781728151359
DOIs	https://doi.org/10.1109/ECCE47101.2021.9595405
State	Published - 2021
Externally published	Yes
Event	13th IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Virtual, Online, Canada Duration: Oct 10 2021 → Oct 14 2021

Publication series

Name	2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings

Conference

Conference	13th IEEE Energy Conversion Congress and Exposition, ECCE 2021
Country/Territory	Canada
City	Virtual, Online
Period	10/10/21 → 10/14/21

Funding

This work was supported by the Oak Ridge National Laboratory (ORNL) funded through the Department of Energy (DOE) - Office of Electricity’s (OE), Transformer Resilience and Advanced Components (TRAC) program led by the program manager Andre Pereira.

Keywords

LCL filter
extremum seeking control (ESC)
grid-tied inverter
resonant frequency estimation

Access to Document

10.1109/ECCE47101.2021.9595405

Cite this

Wu, Y., Mahmud, M., Diao, F., Zhao, Y., Moorthy, R. K., & Chinthavali, M. S. (2021). Extremum Seeking Control based Resonant Frequency Estimation for a Grid-Tied Inverter with LCL Filter. In 2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings (pp. 882-886). (2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE47101.2021.9595405

Wu, Yuheng ; Mahmud, Mohammad ; Diao, Fei et al. / Extremum Seeking Control based Resonant Frequency Estimation for a Grid-Tied Inverter with LCL Filter. 2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2021. pp. 882-886 (2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings).

@inproceedings{0b4dbb9fae504714801f3b87b1fff7ab,

title = "Extremum Seeking Control based Resonant Frequency Estimation for a Grid-Tied Inverter with LCL Filter",

abstract = "The resonant frequency of the LCL filter can drift away from its nominal value due to the circuit components parameters uncertainty and the grid-side impedance, which will further deteriorate the robustness of the system and damping performance. Conventional online resonant frequency estimation schemes, such as discrete Fourier transformation and recursive prediction error, require a significant amount of computational power to implement, which may even need to reduce the sampling and control frequency of the inverter controller. In this work, an extremum seeking control based resonant frequency estimation scheme is proposed, which can provide an accurate estimate of the resonant frequency with notably reduced execution time. Simulations, hardware-in-the-loop (HIL) tests, and experimental tests on a single-phase grid-tied inverter are conducted to validate the effectiveness of the proposed scheme.",

keywords = "LCL filter, extremum seeking control (ESC), grid-tied inverter, resonant frequency estimation",

author = "Yuheng Wu and Mohammad Mahmud and Fei Diao and Yue Zhao and Moorthy, \{Radha Krishna\} and Chinthavali, \{Madhu Sudhan\}",

note = "Publisher Copyright: {\textcopyright} 2021 IEEE.; 13th IEEE Energy Conversion Congress and Exposition, ECCE 2021 ; Conference date: 10-10-2021 Through 14-10-2021",

year = "2021",

doi = "10.1109/ECCE47101.2021.9595405",

language = "English",

series = "2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings",

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Wu, Y, Mahmud, M, Diao, F, Zhao, Y, Moorthy, RK & Chinthavali, MS 2021, Extremum Seeking Control based Resonant Frequency Estimation for a Grid-Tied Inverter with LCL Filter. in 2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings. 2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings, Institute of Electrical and Electronics Engineers Inc., pp. 882-886, 13th IEEE Energy Conversion Congress and Exposition, ECCE 2021, Virtual, Online, Canada, 10/10/21. https://doi.org/10.1109/ECCE47101.2021.9595405

Extremum Seeking Control based Resonant Frequency Estimation for a Grid-Tied Inverter with LCL Filter. / Wu, Yuheng; Mahmud, Mohammad; Diao, Fei et al.
2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2021. p. 882-886 (2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Extremum Seeking Control based Resonant Frequency Estimation for a Grid-Tied Inverter with LCL Filter

AU - Wu, Yuheng

AU - Mahmud, Mohammad

AU - Diao, Fei

AU - Zhao, Yue

AU - Moorthy, Radha Krishna

AU - Chinthavali, Madhu Sudhan

PY - 2021

Y1 - 2021

N2 - The resonant frequency of the LCL filter can drift away from its nominal value due to the circuit components parameters uncertainty and the grid-side impedance, which will further deteriorate the robustness of the system and damping performance. Conventional online resonant frequency estimation schemes, such as discrete Fourier transformation and recursive prediction error, require a significant amount of computational power to implement, which may even need to reduce the sampling and control frequency of the inverter controller. In this work, an extremum seeking control based resonant frequency estimation scheme is proposed, which can provide an accurate estimate of the resonant frequency with notably reduced execution time. Simulations, hardware-in-the-loop (HIL) tests, and experimental tests on a single-phase grid-tied inverter are conducted to validate the effectiveness of the proposed scheme.

AB - The resonant frequency of the LCL filter can drift away from its nominal value due to the circuit components parameters uncertainty and the grid-side impedance, which will further deteriorate the robustness of the system and damping performance. Conventional online resonant frequency estimation schemes, such as discrete Fourier transformation and recursive prediction error, require a significant amount of computational power to implement, which may even need to reduce the sampling and control frequency of the inverter controller. In this work, an extremum seeking control based resonant frequency estimation scheme is proposed, which can provide an accurate estimate of the resonant frequency with notably reduced execution time. Simulations, hardware-in-the-loop (HIL) tests, and experimental tests on a single-phase grid-tied inverter are conducted to validate the effectiveness of the proposed scheme.

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KW - grid-tied inverter

KW - resonant frequency estimation

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DO - 10.1109/ECCE47101.2021.9595405

M3 - Conference contribution

AN - SCOPUS:85123387577

T3 - 2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings

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BT - 2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings

PB - Institute of Electrical and Electronics Engineers Inc.

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Wu Y, Mahmud M, Diao F, Zhao Y, Moorthy RK , Chinthavali MS. Extremum Seeking Control based Resonant Frequency Estimation for a Grid-Tied Inverter with LCL Filter. In 2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2021. p. 882-886. (2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings). doi: 10.1109/ECCE47101.2021.9595405

Extremum Seeking Control based Resonant Frequency Estimation for a Grid-Tied Inverter with LCL Filter

Abstract

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Keywords

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