US 12,267,031 B2
Superconducting rotating machine and method of controlling superconducting rotating machine
Taketsune Nakamura, Kyoto (JP); Alexandre Colle, Kyoto (JP); and Kenjiro Matsuki, Kyoto (JP)
Assigned to KYOTO UNIVERSITY, Kyoto (JP)
Appl. No. 18/038,052
Filed by KYOTO UNIVERSITY, Kyoto (JP)
PCT Filed Nov. 22, 2021, PCT No. PCT/JP2021/042782
§ 371(c)(1), (2) Date May 22, 2023,
PCT Pub. No. WO2022/113930, PCT Pub. Date Jun. 2, 2022.
Claims priority of application No. 2020-195167 (JP), filed on Nov. 25, 2020.
Prior Publication US 2023/0421083 A1, Dec. 28, 2023
Int. Cl. H02P 23/08 (2006.01); H02K 55/04 (2006.01)
CPC H02P 23/08 (2013.01) [H02K 55/04 (2013.01); H02K 2213/03 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A superconducting rotating machine comprising:
a stator that has a tubular stator iron core and stator windings wound around the stator iron core and generates a rotating magnetic field;
a superconducting rotor having: a superconducting squirrel-cage winding that is held rotatably with the rotating magnetic field of the stator and has one or more rotor bars and end rings each made of a superconducting material; and a rotor iron core that has a plurality of slots to accommodate the rotor bars;
a pulse voltage output unit that outputs a pulse voltage to shift the superconducting squirrel-cage winding from at least one of a magnetic shielding state and a magnetic flux trapping state to a magnetic flux flow state; and
a driving voltage output unit that applies a driving voltage to the stator windings to rotationally drive the superconducting rotor,
the superconducting rotating machine being capable of shifting from a slip rotation mode to a synchronous rotation mode,
wherein the pulse voltage output from the pulse voltage output unit is superimposed on the driving voltage, and the superconducting squirrel-cage winding is shifted from at least one of the magnetic shielding state and the magnetic flux trapping state to the magnetic flux flow state to shift to the slip rotation mode.