An enhanced fast fundamental frequency estimator for three-phase electric aircraft grid

Bhumaiah Jula; Raj Kumar Jarial; Anant Kumar Verma; Pedro Roncero-Sánchez; Josep M. Guerrero; Tiago Davi Curi Busarello; Hafiz Ahmed

doi:10.1016/j.measurement.2022.111142

An enhanced fast fundamental frequency estimator for three-phase electric aircraft grid

Bhumaiah Jula, Raj Kumar Jarial, Anant Kumar Verma^*, Pedro Roncero-Sánchez, Josep M. Guerrero, Tiago Davi Curi Busarello, Hafiz Ahmed

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

This article proposes a robust and enhanced three-phase fundamental frequency estimation algorithm for the electric aircraft grid. Unlike conventional frequency-locked loops, the digital signal processing technique-based frequency estimator proposed relies on the storage of five consecutive samples of the fundamental grid voltage signal. Furthermore, the ability to successfully operate at a low sampling frequency, i.e. 8 kHz, makes it sufficiently attractive as regards reducing the memory storage in a low-cost real-time controller. The proposed frequency estimator can additionally eliminate the negative effects of the DC-offset and the fundamental negative sequence components present in the grid signal without any additional effort. Also, the tuning efforts are reduced for the frequency variation range of 350–900 Hz owing to the existence of a single tuning gain parameter. The proposed algorithm has also been found to have a fast dynamic response, which has been experimentally validated through the use of a real-time digital controller.

Original language	English
Article number	111142
Journal	Measurement: Journal of the International Measurement Confederation
Volume	196
ISSN	0263-2241
DOIs	https://doi.org/10.1016/j.measurement.2022.111142
Publication status	Published - 15 Jun 2022

Bibliographical note

Funding Information:
Prof. J. M. Guerrero is with the Center for Research on Microgrids, AAU Energy, Aalborg University, 9220 Aalborg East, Denmark (Tel: +45 2037 8262; Fax: +45 9815 1411; e-mail: joz@energy.aau.dk). He was funded by a Villum Investigator grant (no. 25920) from The Villum Fonden: www.crom.et.aau.dk. The work of H. Ahmed is funded through the S?r Cymru II 80761-BU-103 project by Welsh European Funding Office (WEFO) under the European Regional Development Fund (ERDF).

Funding Information:
The work of H. Ahmed is funded through the Sêr Cymru II 80761-BU-103 project by Welsh European Funding Office (WEFO) under the European Regional Development Fund (ERDF) .

Publisher Copyright:
© 2022 Elsevier Ltd

Keywords

Digital signal processing
Electric aircraft
Frequency estimation
Three-phase grid voltage

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10.1016/j.measurement.2022.111142

Accepted author manuscriptAccepted author manuscript, 7.13 MBLicence: CC BY-NC-ND 4.0

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Cite this

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title = "An enhanced fast fundamental frequency estimator for three-phase electric aircraft grid",

abstract = "This article proposes a robust and enhanced three-phase fundamental frequency estimation algorithm for the electric aircraft grid. Unlike conventional frequency-locked loops, the digital signal processing technique-based frequency estimator proposed relies on the storage of five consecutive samples of the fundamental grid voltage signal. Furthermore, the ability to successfully operate at a low sampling frequency, i.e. 8 kHz, makes it sufficiently attractive as regards reducing the memory storage in a low-cost real-time controller. The proposed frequency estimator can additionally eliminate the negative effects of the DC-offset and the fundamental negative sequence components present in the grid signal without any additional effort. Also, the tuning efforts are reduced for the frequency variation range of 350–900 Hz owing to the existence of a single tuning gain parameter. The proposed algorithm has also been found to have a fast dynamic response, which has been experimentally validated through the use of a real-time digital controller.",

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note = "Funding Information: Prof. J. M. Guerrero is with the Center for Research on Microgrids, AAU Energy, Aalborg University, 9220 Aalborg East, Denmark (Tel: +45 2037 8262; Fax: +45 9815 1411; e-mail: joz@energy.aau.dk). He was funded by a Villum Investigator grant (no. 25920) from The Villum Fonden: www.crom.et.aau.dk. The work of H. Ahmed is funded through the S?r Cymru II 80761-BU-103 project by Welsh European Funding Office (WEFO) under the European Regional Development Fund (ERDF). Funding Information: The work of H. Ahmed is funded through the S{\^e}r Cymru II 80761-BU-103 project by Welsh European Funding Office (WEFO) under the European Regional Development Fund (ERDF) . Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

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AU - Jula, Bhumaiah

AU - Jarial, Raj Kumar

AU - Verma, Anant Kumar

AU - Roncero-Sánchez, Pedro

AU - Guerrero, Josep M.

AU - Davi Curi Busarello, Tiago

AU - Ahmed, Hafiz

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PY - 2022/6/15

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N2 - This article proposes a robust and enhanced three-phase fundamental frequency estimation algorithm for the electric aircraft grid. Unlike conventional frequency-locked loops, the digital signal processing technique-based frequency estimator proposed relies on the storage of five consecutive samples of the fundamental grid voltage signal. Furthermore, the ability to successfully operate at a low sampling frequency, i.e. 8 kHz, makes it sufficiently attractive as regards reducing the memory storage in a low-cost real-time controller. The proposed frequency estimator can additionally eliminate the negative effects of the DC-offset and the fundamental negative sequence components present in the grid signal without any additional effort. Also, the tuning efforts are reduced for the frequency variation range of 350–900 Hz owing to the existence of a single tuning gain parameter. The proposed algorithm has also been found to have a fast dynamic response, which has been experimentally validated through the use of a real-time digital controller.

AB - This article proposes a robust and enhanced three-phase fundamental frequency estimation algorithm for the electric aircraft grid. Unlike conventional frequency-locked loops, the digital signal processing technique-based frequency estimator proposed relies on the storage of five consecutive samples of the fundamental grid voltage signal. Furthermore, the ability to successfully operate at a low sampling frequency, i.e. 8 kHz, makes it sufficiently attractive as regards reducing the memory storage in a low-cost real-time controller. The proposed frequency estimator can additionally eliminate the negative effects of the DC-offset and the fundamental negative sequence components present in the grid signal without any additional effort. Also, the tuning efforts are reduced for the frequency variation range of 350–900 Hz owing to the existence of a single tuning gain parameter. The proposed algorithm has also been found to have a fast dynamic response, which has been experimentally validated through the use of a real-time digital controller.

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JO - Measurement: Journal of the International Measurement Confederation

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M1 - 111142

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An enhanced fast fundamental frequency estimator for three-phase electric aircraft grid

Abstract

Bibliographical note

Keywords

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CROM: Center for Research on Microgrids

Cite this

An enhanced fast fundamental frequency estimator for three-phase electric aircraft grid

Abstract

Bibliographical note

Keywords

Access to Document

AUB Link

Other files and links

Fingerprint

Projects

CROM: Center for Research on Microgrids

Cite this