Real-time identification method for LCL filters used with grid converters

Ville Pirsto; Jarno Kukkola; F M Mahafugur Rahman; Marko Hinkkanen

doi:10.1109/ECCE.2019.8912289

Real-time identification method for LCL filters used with grid converters

Ville Pirsto, Jarno Kukkola, F M Mahafugur Rahman, Marko Hinkkanen

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

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Abstract

This paper presents a real-time algorithm for identifying the inductance and capacitance values of LCL filters used with grid converters. As a side product, the grid inductance seen from the point of common coupling is also estimated. A wideband excitation signal is added to the converter voltage reference. During the excitation, the converter currents and the converter voltage reference are sampled. The samples are preprocessed in real time by removing DC biases and significant grid-frequency harmonics. Parameters of a discrete-time model are estimated at each sampling instant with a recursive estimation algorithm. The model parameter estimates are translated into inductance and capacitance values. The method can be embedded to a control system of PWM-based converters in a plug-in manner. Only the DC-link voltage and converter currents need to be measured. Simulation and experimental results are presented for a 12.5-kVA grid converter system to evaluate the proposed method.

Original language	English
Title of host publication	Proceedings of the 11th IEEE Energy Conversion Congress and Exposition, ECCE 2019
Publisher	IEEE
Pages	3729-3736
Number of pages	8
ISBN (Electronic)	978-1-7281-0395-2
DOIs	https://doi.org/10.1109/ECCE.2019.8912289
Publication status	Published - 29 Sept 2019
MoE publication type	A4 Conference publication
Event	IEEE Energy Conversion Congress and Exposition - Baltimore, United States Duration: 29 Sept 2019 → 3 Oct 2019 Conference number: 11

Publication series

Name	IEEE Energy Conversion Congress and Exposition
Publisher	IEEE
ISSN (Print)	2329-3721
ISSN (Electronic)	2329-3748

Conference

Conference	IEEE Energy Conversion Congress and Exposition
Abbreviated title	ECCE
Country/Territory	United States
City	Baltimore
Period	29/09/2019 → 03/10/2019

Keywords

Grid converter
LCL
Real-time identification
Recursive parameter estimation

Access to Document

10.1109/ECCE.2019.8912289

ELEC_Pirsto_etal_Real-time-Identification-Method_ECCE_2019_acceptedauthormanuscriptAccepted author manuscript, 3.32 MB

IEEE Industry Applications Society (IAS) Industrial Power Converter Committee Second Prize Paper Award
Pirsto, V. (Recipient), Kukkola, J. (Recipient), Rahman, F. M. M. (Recipient) & Hinkkanen, M. (Recipient), 2020
Prize: Award or honor granted for a specific work

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Cite this

@inproceedings{8e2074445de04e259e6f908275cf3def,

title = "Real-time identification method for LCL filters used with grid converters",

abstract = "This paper presents a real-time algorithm for identifying the inductance and capacitance values of LCL filters used with grid converters. As a side product, the grid inductance seen from the point of common coupling is also estimated. A wideband excitation signal is added to the converter voltage reference. During the excitation, the converter currents and the converter voltage reference are sampled. The samples are preprocessed in real time by removing DC biases and significant grid-frequency harmonics. Parameters of a discrete-time model are estimated at each sampling instant with a recursive estimation algorithm. The model parameter estimates are translated into inductance and capacitance values. The method can be embedded to a control system of PWM-based converters in a plug-in manner. Only the DC-link voltage and converter currents need to be measured. Simulation and experimental results are presented for a 12.5-kVA grid converter system to evaluate the proposed method.",

keywords = "Grid converter, LCL, Real-time identification, Recursive parameter estimation",

author = "Ville Pirsto and Jarno Kukkola and Rahman, {F M Mahafugur} and Marko Hinkkanen",

year = "2019",

month = sep,

day = "29",

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language = "English",

series = "IEEE Energy Conversion Congress and Exposition",

publisher = "IEEE",

pages = "3729--3736",

booktitle = "Proceedings of the 11th IEEE Energy Conversion Congress and Exposition, ECCE 2019",

address = "United States",

note = "IEEE Energy Conversion Congress and Exposition, ECCE ; Conference date: 29-09-2019 Through 03-10-2019",

}

Pirsto, V, Kukkola, J, Rahman, FMM & Hinkkanen, M 2019, Real-time identification method for LCL filters used with grid converters. in Proceedings of the 11th IEEE Energy Conversion Congress and Exposition, ECCE 2019. IEEE Energy Conversion Congress and Exposition, IEEE, pp. 3729-3736, IEEE Energy Conversion Congress and Exposition, Baltimore, Maryland, United States, 29/09/2019. https://doi.org/10.1109/ECCE.2019.8912289

Real-time identification method for LCL filters used with grid converters. / Pirsto, Ville; Kukkola, Jarno; Rahman, F M Mahafugur et al.
Proceedings of the 11th IEEE Energy Conversion Congress and Exposition, ECCE 2019. IEEE, 2019. p. 3729-3736 (IEEE Energy Conversion Congress and Exposition).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Real-time identification method for LCL filters used with grid converters

AU - Pirsto, Ville

AU - Kukkola, Jarno

AU - Rahman, F M Mahafugur

AU - Hinkkanen, Marko

N1 - Conference code: 11

PY - 2019/9/29

Y1 - 2019/9/29

N2 - This paper presents a real-time algorithm for identifying the inductance and capacitance values of LCL filters used with grid converters. As a side product, the grid inductance seen from the point of common coupling is also estimated. A wideband excitation signal is added to the converter voltage reference. During the excitation, the converter currents and the converter voltage reference are sampled. The samples are preprocessed in real time by removing DC biases and significant grid-frequency harmonics. Parameters of a discrete-time model are estimated at each sampling instant with a recursive estimation algorithm. The model parameter estimates are translated into inductance and capacitance values. The method can be embedded to a control system of PWM-based converters in a plug-in manner. Only the DC-link voltage and converter currents need to be measured. Simulation and experimental results are presented for a 12.5-kVA grid converter system to evaluate the proposed method.

AB - This paper presents a real-time algorithm for identifying the inductance and capacitance values of LCL filters used with grid converters. As a side product, the grid inductance seen from the point of common coupling is also estimated. A wideband excitation signal is added to the converter voltage reference. During the excitation, the converter currents and the converter voltage reference are sampled. The samples are preprocessed in real time by removing DC biases and significant grid-frequency harmonics. Parameters of a discrete-time model are estimated at each sampling instant with a recursive estimation algorithm. The model parameter estimates are translated into inductance and capacitance values. The method can be embedded to a control system of PWM-based converters in a plug-in manner. Only the DC-link voltage and converter currents need to be measured. Simulation and experimental results are presented for a 12.5-kVA grid converter system to evaluate the proposed method.

KW - Grid converter

KW - LCL

KW - Real-time identification

KW - Recursive parameter estimation

U2 - 10.1109/ECCE.2019.8912289

DO - 10.1109/ECCE.2019.8912289

M3 - Conference article in proceedings

T3 - IEEE Energy Conversion Congress and Exposition

SP - 3729

EP - 3736

BT - Proceedings of the 11th IEEE Energy Conversion Congress and Exposition, ECCE 2019

PB - IEEE

T2 - IEEE Energy Conversion Congress and Exposition

Y2 - 29 September 2019 through 3 October 2019

ER -

Real-time identification method for LCL filters used with grid converters

Abstract

Publication series

Conference

Keywords

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Prizes

IEEE Industry Applications Society (IAS) Industrial Power Converter Committee Second Prize Paper Award

Cite this