TY - GEN
T1 - Multi-objective optimization of an actively shielded superconducting field winding
AU - Loder, David C.
AU - Haran, Kiruba S.
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/3/20
Y1 - 2015/3/20
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 MRI magnet designs, is considered. This topology utilizes a set of main coils to produce armature MMF, 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 radius. Results show a 32% decrease in machine radius with a 33% increase in coil size.
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 MRI magnet designs, is considered. This topology utilizes a set of main coils to produce armature MMF, 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 radius. Results show a 32% decrease in machine radius with a 33% increase in coil size.
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=84928027922&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84928027922&partnerID=8YFLogxK
U2 - 10.1109/PECI.2015.7064939
DO - 10.1109/PECI.2015.7064939
M3 - Conference contribution
AN - SCOPUS:84928027922
T3 - 2015 IEEE Power and Energy Conference at Illinois, PECI 2015
BT - 2015 IEEE Power and Energy Conference at Illinois, PECI 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2015 IEEE Power and Energy Conference at Illinois, PECI 2015
Y2 - 20 February 2015 through 21 February 2015
ER -