Preliminary Assessment of an Ultrasonic Level Sensor for the Calorimetric Measurement of AC Losses in Superconducting Devices

Ricardo Walker; Diogo Durao; Diogo Dias; Isabel Catarino; Joao Murta-Pina; Roberto Oliveira

doi:10.1109/YEF-ECE55092.2022.9850039

Preliminary Assessment of an Ultrasonic Level Sensor for the Calorimetric Measurement of AC Losses in Superconducting Devices

Ricardo Walker, Diogo Durao, Diogo Dias, Isabel Catarino, Joao Murta-Pina, Roberto Oliveira

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

Abstract

Superconducting materials show no resistivity under DC regimes and can generate extremely high magnetic flux densities, allowing for the development of disruptive or improved power grid applications. Yet, under AC, they experience losses that must be removed by the respective cryogenic system, which is responsible for maintaining the superconducting state. Measuring these losses is of utmost importance, e.g., for monitoring the condition of superconducting devices. In this paper, a new calorimetric method for measuring AC losses in superconducting systems is investigated. The proposed concept infers the level of the cryogenic fluid in a cryostat by measuring the echo time from sound waves reflected on it. The thermal energy (losses) that leads to fluid evaporation is then calculated. Using this method may lead to a faster and more direct approach to measuring losses when compared to other concepts, even if the sensor shows some error factors, as well as strict environmental requirements for its operation. A prototype of the sensor is tested in liquid nitrogen, and a preliminary assessment of its performance is carried out.

Original language	English
Title of host publication	Proceedings - 2022 International Young Engineers Forum in Electrical and Computer Engineering, YEF-ECE 2022
Place of Publication	U. S. A.
Publisher	IEEE
Pages	112-116
Number of pages	5
ISBN (Electronic)	9781665467315
DOIs	https://doi.org/10.1109/YEF-ECE55092.2022.9850039
Publication status	Published - 11 Aug 2022
Externally published	Yes
Event	2022 International Young Engineers Forum in Electrical and Computer Engineering, YEF-ECE 2022 - Lisbon, Portugal Duration: 1 Jul 2022 → …

Conference

Conference	2022 International Young Engineers Forum in Electrical and Computer Engineering, YEF-ECE 2022
Country/Territory	Portugal
City	Lisbon
Period	1/07/22 → …

Bibliographical note

Funding Information:
This work was supported by project tLOSS (Transforming Losses Calculation in High Temperature Superconducting Power Systems), funded by FEDER (Programa Operacional Regional de Lisboa) and Portuguese national funds, with reference PTDC/EEI-EEE/32508/2017 LISBOA-01-0145-FEDER-032508; and by FCT Fundac¸ão para a Ciência e a Tecnologia (CTS multiannual funding) under the framework of project UIDB/00066/2020.

Funding Information:
This work was supported by project tLOSS (Transforming Losses Calculation in High Temperature Superconducting Power Systems), funded by FEDER (Programa Operacional Regional de Lisboa) and Portuguese national funds, with reference PTDC/EEI-EEE/32508/2017 LISBOA-01-0145-FEDER-032508; and by FCT Fundacao para a Ciencia e a Tecnologia (CTS multiannual funding) under the framework of project UIDB/00066/2020

Funding

This work was supported by project tLOSS (Transforming Losses Calculation in High Temperature Superconducting Power Systems), funded by FEDER (Programa Operacional Regional de Lisboa) and Portuguese national funds, with reference PTDC/EEI-EEE/32508/2017 LISBOA-01-0145-FEDER-032508; and by FCT Fundac¸ão para a Ciência e a Tecnologia (CTS multiannual funding) under the framework of project UIDB/00066/2020. This work was supported by project tLOSS (Transforming Losses Calculation in High Temperature Superconducting Power Systems), funded by FEDER (Programa Operacional Regional de Lisboa) and Portuguese national funds, with reference PTDC/EEI-EEE/32508/2017 LISBOA-01-0145-FEDER-032508; and by FCT Fundacao para a Ciencia e a Tecnologia (CTS multiannual funding) under the framework of project UIDB/00066/2020

Keywords

AC loss
calorimetric method
high-temperature superconductor (HTS)
ultrasonic sensor
ultrasound

ASJC Scopus subject areas

Artificial Intelligence
Hardware and Architecture
Computer Science Applications
Energy Engineering and Power Technology
Electrical and Electronic Engineering
Instrumentation

Access to Document

10.1109/YEF-ECE55092.2022.9850039

Cite this

Walker, R., Durao, D., Dias, D., Catarino, I., Murta-Pina, J., & Oliveira, R. (2022). Preliminary Assessment of an Ultrasonic Level Sensor for the Calorimetric Measurement of AC Losses in Superconducting Devices. In Proceedings - 2022 International Young Engineers Forum in Electrical and Computer Engineering, YEF-ECE 2022 (pp. 112-116). IEEE. https://doi.org/10.1109/YEF-ECE55092.2022.9850039

Preliminary Assessment of an Ultrasonic Level Sensor for the Calorimetric Measurement of AC Losses in Superconducting Devices. / Walker, Ricardo; Durao, Diogo; Dias, Diogo et al.
Proceedings - 2022 International Young Engineers Forum in Electrical and Computer Engineering, YEF-ECE 2022. U. S. A.: IEEE, 2022. p. 112-116.

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

Walker, R, Durao, D, Dias, D, Catarino, I, Murta-Pina, J & Oliveira, R 2022, Preliminary Assessment of an Ultrasonic Level Sensor for the Calorimetric Measurement of AC Losses in Superconducting Devices. in Proceedings - 2022 International Young Engineers Forum in Electrical and Computer Engineering, YEF-ECE 2022. IEEE, U. S. A., pp. 112-116, 2022 International Young Engineers Forum in Electrical and Computer Engineering, YEF-ECE 2022, Lisbon, Portugal, 1/07/22. https://doi.org/10.1109/YEF-ECE55092.2022.9850039

Walker R, Durao D, Dias D, Catarino I, Murta-Pina J, Oliveira R. Preliminary Assessment of an Ultrasonic Level Sensor for the Calorimetric Measurement of AC Losses in Superconducting Devices. In Proceedings - 2022 International Young Engineers Forum in Electrical and Computer Engineering, YEF-ECE 2022. U. S. A.: IEEE. 2022. p. 112-116 doi: 10.1109/YEF-ECE55092.2022.9850039

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note = "Funding Information: This work was supported by project tLOSS (Transforming Losses Calculation in High Temperature Superconducting Power Systems), funded by FEDER (Programa Operacional Regional de Lisboa) and Portuguese national funds, with reference PTDC/EEI-EEE/32508/2017 LISBOA-01-0145-FEDER-032508; and by FCT Fundac¸{\~a}o para a Ci{\^e}ncia e a Tecnologia (CTS multiannual funding) under the framework of project UIDB/00066/2020. Funding Information: This work was supported by project tLOSS (Transforming Losses Calculation in High Temperature Superconducting Power Systems), funded by FEDER (Programa Operacional Regional de Lisboa) and Portuguese national funds, with reference PTDC/EEI-EEE/32508/2017 LISBOA-01-0145-FEDER-032508; and by FCT Fundacao para a Ciencia e a Tecnologia (CTS multiannual funding) under the framework of project UIDB/00066/2020 ; 2022 International Young Engineers Forum in Electrical and Computer Engineering, YEF-ECE 2022 ; Conference date: 01-07-2022",

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N2 - Superconducting materials show no resistivity under DC regimes and can generate extremely high magnetic flux densities, allowing for the development of disruptive or improved power grid applications. Yet, under AC, they experience losses that must be removed by the respective cryogenic system, which is responsible for maintaining the superconducting state. Measuring these losses is of utmost importance, e.g., for monitoring the condition of superconducting devices. In this paper, a new calorimetric method for measuring AC losses in superconducting systems is investigated. The proposed concept infers the level of the cryogenic fluid in a cryostat by measuring the echo time from sound waves reflected on it. The thermal energy (losses) that leads to fluid evaporation is then calculated. Using this method may lead to a faster and more direct approach to measuring losses when compared to other concepts, even if the sensor shows some error factors, as well as strict environmental requirements for its operation. A prototype of the sensor is tested in liquid nitrogen, and a preliminary assessment of its performance is carried out.

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Preliminary Assessment of an Ultrasonic Level Sensor for the Calorimetric Measurement of AC Losses in Superconducting Devices

Abstract

Conference

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

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