TY - GEN
T1 - Optimal design of a fully superconducting machine for 10- mw offshore wind turbines
AU - Balachandran, Thanatheepan
AU - Lee, Dongsu
AU - Haran, Kiruba S.
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/5
Y1 - 2019/5
N2 - Fully superconducting (SC)machines hold immense promise for high-power-density and higher efficiency machine solutions for offshore wind turbine applications. In this paper, a 10MW air-core fully SC machine is designed for offshore wind turbine applications. This machine design is considered with inside armature coils and outside rotating field coils. In this topology, shield iron can be eliminated or reduced by replacing it with shield coils which contain the magnetic flux inside the machine. This machine is attractive for off-shore wind turbine application due to its high-power density and high efficiency compared to a conventional shield iron design. However, due to the introduction of additional shield coils, this topology uses relatively more amount of SC material than a conventional shield iron design. Therefore, a tradeoff between the shield coils and the shield iron is explored in this paper. In addition, machine designs with different pole-counts are investigated to identify the optimal pole-count design for a low-speed application. A detailed ac loss calculation is evaluated for the machine and required cryocooler power is evaluated to obtain the machine efficiency.
AB - Fully superconducting (SC)machines hold immense promise for high-power-density and higher efficiency machine solutions for offshore wind turbine applications. In this paper, a 10MW air-core fully SC machine is designed for offshore wind turbine applications. This machine design is considered with inside armature coils and outside rotating field coils. In this topology, shield iron can be eliminated or reduced by replacing it with shield coils which contain the magnetic flux inside the machine. This machine is attractive for off-shore wind turbine application due to its high-power density and high efficiency compared to a conventional shield iron design. However, due to the introduction of additional shield coils, this topology uses relatively more amount of SC material than a conventional shield iron design. Therefore, a tradeoff between the shield coils and the shield iron is explored in this paper. In addition, machine designs with different pole-counts are investigated to identify the optimal pole-count design for a low-speed application. A detailed ac loss calculation is evaluated for the machine and required cryocooler power is evaluated to obtain the machine efficiency.
KW - Air-core machines
KW - Fully superconducting machines
KW - High-power density
KW - Offshore wind turbine
KW - Optimal machine design
UR - http://www.scopus.com/inward/record.url?scp=85071013778&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85071013778&partnerID=8YFLogxK
U2 - 10.1109/IEMDC.2019.8785227
DO - 10.1109/IEMDC.2019.8785227
M3 - Conference contribution
AN - SCOPUS:85071013778
T3 - 2019 IEEE International Electric Machines and Drives Conference, IEMDC 2019
SP - 1903
EP - 1909
BT - 2019 IEEE International Electric Machines and Drives Conference, IEMDC 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 11th IEEE International Electric Machines and Drives Conference, IEMDC 2019
Y2 - 12 May 2019 through 15 May 2019
ER -