Electrical machine

Details Electrical machine Electrical machine

1975-04-11

1976-08-10

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 93, 310156, 310 90, H02K 708

Patent

active

039744060

ABSTRACT:
In an electrical machine including a rotor, a plurality of permanent magnets mounted on the rotor, a stator spaced from the rotor by an air gap, and electrical windings disposed on the stator to be traversed by the magnetic fields of the permanent magnets, the rotor is elastically or resiliently held relative to the stator by a rotor bearing, the stator includes a stator body made of an electrically nonconductive and nonmagnetizable material for preventing hysteresis losses, eddy current losses, and magnetic reaction forces on the rotor, and the permanent magnets, the windings and stator are arranged for causing the magnetic fields of the permanent magnets to pass through the air gap between rotor and stator, the windings, and the stator body.

REFERENCES:
patent: 3388273 (1968-06-01), Davis
patent: 3596121 (1971-07-01), Chang
patent: 3891876 (1975-06-01), Herr et al.

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