Small motor with permanent-magnet rotor

Electrical generator or motor structure – Dynamoelectric – Rotary

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310179, 310184, 310213, H02K 700, H02K 100, H02K 314

Patent

active

055023592

ABSTRACT:
A small motor having a two-pole permanent-magnet rotor and a U-shaped laminated stator having a pair of limbs with end portions that form magnetic poles for the rotor. The limbs carry alternately energized exciter coils including three nested winding layers arranged in two winding groups, of which the outer winding layer and the inner winding layer of the first limb and the second limb, respectively, and the central winding layer of the second limb and the first limb, respectively, are connected in series with one another.

REFERENCES:
patent: 3333172 (1967-07-01), Brailsford
patent: 3390289 (1968-06-01), Dijken
patent: 3731125 (1973-05-01), Nikaido et al.
patent: 4135107 (1979-01-01), Kamerbeek et al.
patent: 4200817 (1980-04-01), Bratoljic
patent: 4238702 (1980-12-01), Belova et al.
patent: 4500824 (1985-02-01), Miller
patent: 4554471 (1985-11-01), Bertram et al.
patent: 4733113 (1988-03-01), Smith
patent: 4896063 (1990-01-01), Roberts
patent: 5231324 (1993-07-01), Kawamura et al.
"Feinwerktechnik and Messtechnik" 87 (1979) 4, pp. 163 to 169.

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