TY - GEN
T1 - Scaling studies of high speed high temperature superconducting generator
AU - Lokhandwalla, M.
AU - Haran, K. S.
AU - Alexander, J. P.
PY - 2012
Y1 - 2012
N2 - The sizing of a high speed, high power density, high temperature superconducting (HTS) electric generator is discussed here. Previous work discussed the advantages of a homopolar inductor alternator (HIA) machine topology for the high speed, high power density application i.e., the enhanced magneto-motive force (MMF) capability of the HTS coil combined with high rotor tip velocity and a liquid cooled air gap wound armature. In this work we present the sizing/scaling of a family of machines based on this topology. The goal of this exercise is to obtain power entitlement and power density of the machine for a given physical size within mechanical, thermal and electrical constraints. A prototype machine was designed and tested [1] validating the assumptions used in this sizing/scaling model. Effects of some key design changes are also discussed. Power densities in the range of 4.2-8.8 kW/kg can be obtained depending on the rotor material, and HTS wire, for 3-5MW rating. Comparison is made with high speed permanent magnet (PM) machines indicating a significant weight reduction at least 500 kg for a 5MW machine or 1000 kg for a 15.6MW machine.
AB - The sizing of a high speed, high power density, high temperature superconducting (HTS) electric generator is discussed here. Previous work discussed the advantages of a homopolar inductor alternator (HIA) machine topology for the high speed, high power density application i.e., the enhanced magneto-motive force (MMF) capability of the HTS coil combined with high rotor tip velocity and a liquid cooled air gap wound armature. In this work we present the sizing/scaling of a family of machines based on this topology. The goal of this exercise is to obtain power entitlement and power density of the machine for a given physical size within mechanical, thermal and electrical constraints. A prototype machine was designed and tested [1] validating the assumptions used in this sizing/scaling model. Effects of some key design changes are also discussed. Power densities in the range of 4.2-8.8 kW/kg can be obtained depending on the rotor material, and HTS wire, for 3-5MW rating. Comparison is made with high speed permanent magnet (PM) machines indicating a significant weight reduction at least 500 kg for a 5MW machine or 1000 kg for a 15.6MW machine.
KW - high-temperature superconductors
KW - homopolar generators
KW - inductor alternators
KW - superconducting rotating machines
UR - http://www.scopus.com/inward/record.url?scp=84870828862&partnerID=8YFLogxK
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U2 - 10.1109/ICElMach.2012.6349958
DO - 10.1109/ICElMach.2012.6349958
M3 - Conference contribution
AN - SCOPUS:84870828862
SN - 9781467301428
T3 - Proceedings - 2012 20th International Conference on Electrical Machines, ICEM 2012
SP - 751
EP - 756
BT - Proceedings - 2012 20th International Conference on Electrical Machines, ICEM 2012
T2 - 2012 20th International Conference on Electrical Machines, ICEM 2012
Y2 - 2 September 2012 through 5 September 2012
ER -