VALVE-TYPE SUPERCONDUCTOR INDUCTOR MACHINE Russian patent published in 2002 - IPC

FIELD: valve-type electrical machines using high-temperature superconductors. SUBSTANCE: machine is provided with second stator whose laminated core has pole shoes carrying multiphase coil winding and with second rotor mounted on same shaft as first rotor with cylindrical insert placed in-between and made of superconducting material with frozen-in magnetic flux; this insert is, essentially, cryomagnet saturated in axial direction that provides for unipolarity of pole shoes of first and second rotors; stator mounts solenoid placed around mentioned insert for freezing magnetic flux into the latter; both stators are interconnected by means of cylindrical magnetic circuit and their multiphase coil windings are provided with commutator affording unipolar magnetization of poles on each stator. EFFECT: improved power characteristics; reduced mass and size of machine. 7 cl, 6 dwg