Sectoral core for magnetic bearing

Details Sectoral core for magnetic bearing Sectoral core for magnetic bearing

1991-01-10

1992-03-10

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310254, 310186, F16C 3204, H02K 114

Patent

active

050952374

ABSTRACT:
A rotary electrical machine comprises a rotor assembly and a stator assembly separated by an air gap. The stator is formed from discrete generally pie-shaped pole pieces having a progressively increasing radial slot to accommodate winding of the coil. The pole pieces are preferably wound from a grain oriented ferromagnetic tape to improve the permeability of the pole and its saturation level. Groups of poles may be separated into sectors. In an alternative embodiment, at least some of the pole pieces are formed from both a permanent magnet and ferromagnetic tape to provide a constant bias between the rotor and stator assemblies.

REFERENCES:
patent: 1255607 (1918-02-01), Hensley
patent: 4255684 (1981-03-01), Mischler et al.
patent: 4403401 (1983-09-01), Rosenberry
patent: 4549104 (1985-10-01), Niimura et al.
patent: 4804873 (1989-02-01), Shiraki et al.

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