DISK-TYPE ELECTRICAL MACHINE Russian patent published in 2005 - IPC

FIELD: electromechanical engineering; motors and generators.

SUBSTANCE: proposed disk-type electrical machine has stator frame built of two disks abutting against one another through their side surfaces. Stator frame accommodates three-phase winding and support-mounted shaft carrying disk-shaped rotor. Disk mounts working members made of magnetically perceptible material. Machine is provided with cooling system. Working members are made in the form of disks of high-temperature superconductor material uniformly arranged over circumference in rotor body. Number of working members equals that of machine poles. Winding is assembled of coils; each phase has even number of coils and those of same phase are uniformly distributed either side of rotor disk and secured on inner surfaces of stator frame disks. Coils of each disk are uniformly distributed over circumference. Axis of each coil of one disk is equally spaced from axes of adjacent coils of other disk. Machine is provided with cryogenic cooling system affording operating temperature below critical value at which superconductor material manifests superconducting properties. Preferable cooling agent of cooling system is liquid nitrogen. Rotor shaft is supported by magnetic system assembled of three permanent magnets. First magnet is mounted to provide for axial displacement in thrust bearing secured on bottom disk of stator frame. Second magnet is mounted on rotor end opposing first magnet. Third magnet is mounted on stator frame disk and separated from second magnet by rotor disk.

EFFECT: enhanced power output per unit volume at field control capability; enhanced efficiency due to reduced loss in rotor supports.

4 cl, 2 dwg