TY - GEN
T1 - Multi-objective optimization of an actively shielded superconducting field winding
T2 - IEEE International Electric Machines and Drives Conference, IEMDC 2015
AU - Loder, David C.
AU - Haran, Kiruba S.
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2016/2/16
Y1 - 2016/2/16
N2 - An important challenge in the design of air-core superconducting machines is the containment of the magnetic fields within the electric machine. Current solutions result in large reductions of the high power density achievable through the use of superconducting windings. To address this challenge, an actively shielded electromagnet design, an approach commonly used in Magnetic Resonance Imaging (MRI) magnet designs, is considered. This topology utilizes a set of main coils to produce the armature flux density, while including another set of oppositely excited compensating coils to mitigate the fields radiating outside the machine. This approach eliminates or reduces the use of steel in a passive magnetic shield, allowing for very high power density machines. Furthermore, a multi-objective optimization scheme is introduced to minimize two competing objectives, superconducting coil usage and machine volume. Results show a 74% decrease in volume with a 104% increase in superconductor usage.
AB - An important challenge in the design of air-core superconducting machines is the containment of the magnetic fields within the electric machine. Current solutions result in large reductions of the high power density achievable through the use of superconducting windings. To address this challenge, an actively shielded electromagnet design, an approach commonly used in Magnetic Resonance Imaging (MRI) magnet designs, is considered. This topology utilizes a set of main coils to produce the armature flux density, while including another set of oppositely excited compensating coils to mitigate the fields radiating outside the machine. This approach eliminates or reduces the use of steel in a passive magnetic shield, allowing for very high power density machines. Furthermore, a multi-objective optimization scheme is introduced to minimize two competing objectives, superconducting coil usage and machine volume. Results show a 74% decrease in volume with a 104% increase in superconductor usage.
KW - AC machines
KW - critical current density
KW - generators
KW - magnetic shielding
KW - rotating machines
KW - superconducting coils
KW - superconducting magnets
KW - wind power generation
UR - http://www.scopus.com/inward/record.url?scp=84965111672&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84965111672&partnerID=8YFLogxK
U2 - 10.1109/IEMDC.2015.7409294
DO - 10.1109/IEMDC.2015.7409294
M3 - Conference contribution
AN - SCOPUS:84965111672
T3 - Proceedings - 2015 IEEE International Electric Machines and Drives Conference, IEMDC 2015
SP - 1709
EP - 1714
BT - Proceedings - 2015 IEEE International Electric Machines and Drives Conference, IEMDC 2015
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 11 May 2015 through 13 May 2015
ER -