期刊
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
卷 27, 期 4, 页码 -出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TASC.2016.2639013
关键词
High-temperature superconductor; motors; generators; rotating machines
资金
- Japan MEXT
We have developed a new type of superconducting synchronous rotating machine whose self-induction is cancelled out, with the intention of achieving a very high power-to-weight ratio including the weight of the cooling system. Magnetic cores are used to direct the magnetic field from permanent magnets on the rotors onto superconducting wires on the stator, and the reaction of the Lorenz force is used to drive the rotors. Cancellation of self-induction in the cores enables the elimination of core losses and magnetic saturation, permitting the core mass to be reduced significantly, and also reducing ac losses in the superconducting wires. In this study, a prototype prepared using 100 m of second-generation high-temperature superconductor (2G-HTS) wire is described, and its characteristics are measured and compared with a numerical simulation. We conclude that electrical rotating machines with power-to-weight ratios comparable to jet engines could be developed with 2G-HTS wire.
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