An improved FEM model for computing transport AC loss in coils made of RABiTS YBCO coated conductors for electric machines

Research output: Contribution to journalJournal article – Annual report year: 2011Researchpeer-review

Standard

An improved FEM model for computing transport AC loss in coils made of RABiTS YBCO coated conductors for electric machines. / Ainslie, Mark D; Rodriguez Zermeno, Victor Manuel; Hong, Zhiyong; Yuan, Weijia; Flack, Timothy J; Coombs, Timothy A.

In: Superconductor Science & Technology, Vol. 24, No. 4, 2011, p. 045005.

Research output: Contribution to journalJournal article – Annual report year: 2011Researchpeer-review

Harvard

APA

CBE

MLA

Vancouver

Author

Ainslie, Mark D ; Rodriguez Zermeno, Victor Manuel ; Hong, Zhiyong ; Yuan, Weijia ; Flack, Timothy J ; Coombs, Timothy A. / An improved FEM model for computing transport AC loss in coils made of RABiTS YBCO coated conductors for electric machines. In: Superconductor Science & Technology. 2011 ; Vol. 24, No. 4. pp. 045005.

Bibtex

@article{8c60e131f0bc4eaaae363ed9f45488ab,
title = "An improved FEM model for computing transport AC loss in coils made of RABiTS YBCO coated conductors for electric machines",
abstract = "AC loss can be a significant problem for any applications that utilize or produce an AC current or magnetic field, such as an electric machine. The authors investigate the electromagnetic properties of high temperature superconductors with a particular focus on the AC loss in superconducting coils made from YBCO coated conductors for use in an all-superconducting electric machine. This paper presents an improved 2D finite element model for the cross-section of such coils, based on the H formulation. The model is used to calculate the transport AC loss of a racetrack-shaped coil using constant and magnetic field-dependent critical current densities, and the inclusion and exclusion of a magnetic substrate, as found in RABiTS (rolling-assisted biaxially textured substrate) YBCO coated conductors. The coil model is based on the superconducting stator coils used in the University of Cambridge EPEC Superconductivity Group's all-superconducting permanent magnet synchronous motor design. To validate the modeling results, the transport AC loss of a stator coil is measured using an electrical method based on inductive compensation by means of a variable mutual inductance. Finally, the implications of the findings on the performance of the motor are discussed.",
keywords = "Y-based cuprates, Electric motors, Transport properties (electric and thermal conductivity, thermoelectric effects, etc.), Superconducting magnets; magnetic levitation devices",
author = "Ainslie, {Mark D} and {Rodriguez Zermeno}, {Victor Manuel} and Zhiyong Hong and Weijia Yuan and Flack, {Timothy J} and Coombs, {Timothy A}",
year = "2011",
doi = "10.1088/0953-2048/24/4/045005",
language = "English",
volume = "24",
pages = "045005",
journal = "Superconductor Science & Technology",
issn = "0953-2048",
publisher = "IOP Publishing",
number = "4",

}

RIS

TY - JOUR

T1 - An improved FEM model for computing transport AC loss in coils made of RABiTS YBCO coated conductors for electric machines

AU - Ainslie, Mark D

AU - Rodriguez Zermeno, Victor Manuel

AU - Hong, Zhiyong

AU - Yuan, Weijia

AU - Flack, Timothy J

AU - Coombs, Timothy A

PY - 2011

Y1 - 2011

N2 - AC loss can be a significant problem for any applications that utilize or produce an AC current or magnetic field, such as an electric machine. The authors investigate the electromagnetic properties of high temperature superconductors with a particular focus on the AC loss in superconducting coils made from YBCO coated conductors for use in an all-superconducting electric machine. This paper presents an improved 2D finite element model for the cross-section of such coils, based on the H formulation. The model is used to calculate the transport AC loss of a racetrack-shaped coil using constant and magnetic field-dependent critical current densities, and the inclusion and exclusion of a magnetic substrate, as found in RABiTS (rolling-assisted biaxially textured substrate) YBCO coated conductors. The coil model is based on the superconducting stator coils used in the University of Cambridge EPEC Superconductivity Group's all-superconducting permanent magnet synchronous motor design. To validate the modeling results, the transport AC loss of a stator coil is measured using an electrical method based on inductive compensation by means of a variable mutual inductance. Finally, the implications of the findings on the performance of the motor are discussed.

AB - AC loss can be a significant problem for any applications that utilize or produce an AC current or magnetic field, such as an electric machine. The authors investigate the electromagnetic properties of high temperature superconductors with a particular focus on the AC loss in superconducting coils made from YBCO coated conductors for use in an all-superconducting electric machine. This paper presents an improved 2D finite element model for the cross-section of such coils, based on the H formulation. The model is used to calculate the transport AC loss of a racetrack-shaped coil using constant and magnetic field-dependent critical current densities, and the inclusion and exclusion of a magnetic substrate, as found in RABiTS (rolling-assisted biaxially textured substrate) YBCO coated conductors. The coil model is based on the superconducting stator coils used in the University of Cambridge EPEC Superconductivity Group's all-superconducting permanent magnet synchronous motor design. To validate the modeling results, the transport AC loss of a stator coil is measured using an electrical method based on inductive compensation by means of a variable mutual inductance. Finally, the implications of the findings on the performance of the motor are discussed.

KW - Y-based cuprates

KW - Electric motors

KW - Transport properties (electric and thermal conductivity, thermoelectric effects, etc.)

KW - Superconducting magnets; magnetic levitation devices

U2 - 10.1088/0953-2048/24/4/045005

DO - 10.1088/0953-2048/24/4/045005

M3 - Journal article

VL - 24

SP - 045005

JO - Superconductor Science & Technology

JF - Superconductor Science & Technology

SN - 0953-2048

IS - 4

ER -