Permanent magnet electric machine with hard-magnetic and soft-ma

Details Permanent magnet electric machine with hard-magnetic and soft-ma Permanent magnet electric machine with hard-magnetic and soft-ma

1995-03-16

1998-10-06

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310156, 310179, 310261, H02K 2100

Patent

active

058181385

ABSTRACT:
In known permanent magnet electric machines with a radial air gap, intersecting phase conductors are deflected only into the space arranged axially in front of the slotted soft magnetic body. By separating the body (13) which is equipped with permanent magnets into segments which may be radially placed into the winding (15), the winding overhangs may expand into the space located axially in front of the permanent magnets and their soft magnetic yokes. The radial overall length of the machine is thus reduced and its efficiency and power density are increased because of the shorter conductive paths in the winding overhangs. In addition, manufacture, dismantling, and magnetizing of the magnets is simplified.

REFERENCES:
patent: 4642502 (1987-02-01), Carpenter et al.
patent: 4973872 (1990-11-01), Dohogne
patent: 5302876 (1994-04-01), Iwamatsu et al.
patent: 5345129 (1994-09-01), Molnar
patent: 5397951 (1995-03-01), Uchida et al.
patent: 5485045 (1996-01-01), Canders et al.

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