Mitsubishi Denki Kabushiki Kaisha

Mitsuhiro Uchida

Kouichi Okamoto

Tatsuei Nomura

Akinori Ueda

Toshiki Hirao

Susumu Maeda

Hidenao Hatanaka

Kouichi Ooshita

A rotor for a superconducting electric rotary machine comprises a coil supporting tube, a superconducting wire constituting a superconducting field coil, in-line insulators disposed between the laterally adjacent lines of the wound wire and layer insulators between the vertically adjacent layers of the wound wire of the coil, wherein at least one of the line insulators and the layer insulators is formed by a grooved insulating material or a perforated insulating material.

Superconducting electric rotary machine having grooved insulation for

In large capacity and superconducting rotating electric machines, the stator coil windings are frequently placed in the air gap between the stator core and the rotor. This so-called air gap winding rotating electric machine has the drawback that reliably securing the stator coils to the stator core is difficult. In the air gap winding rotating electric machine according to the present invention, the stator coils are disposed between the outer circumference of a thin-walled electrically insulating cylinder surrounding the rotor and the inner circumference of the magnetic shield on the stator side. Taper keys are inserted between the outer circumference of the stator coils and the inner circumference of the magnetic shield so as to firmly press the stator coils against the thin-walled electrically insulating cylinder. In this manner, the stator coils can be easily and reliably secured to the stator.

Air gap winding rotating electric machine

Growing community of inventors

Kobe, Japan

Mitsuhiro Uchida