Dynamoelectric machine with permanent magnet and magnet mounting

Details Dynamoelectric machine with permanent magnet and magnet mounting Dynamoelectric machine with permanent magnet and magnet mounting

1986-04-24

1987-02-10

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310216, 310254, H02K 118

Patent

active

046425020

ABSTRACT:
A dynamoelectric machine has a rotor or stator which comprises a core with axial groups of flat, rectangular magnet mounting surfaces, each successive magnet mounting surface of a group being circumferentially offset by a common angle of axial rotation from the previous magnet mounting surface. A magnet is mounted on each magnet mounting surface; and each magnet has a flat surface for mounting and an opposing arcuate surface to help form a cylindrical surface. Each of the magnets has the shape, when viewed radially, of a parallelogram forming a skew angle with the axis corresponding with the rotational offset of the magnet mounting surfaces to define skewed slots between skewed magnetic poles extending the substantial axial length of the core. The core may comprise polygonal lamina with the flat polygon sides grouped to form the magnet mounting surfaces; or it may comprise circular lamina with a non-magnetic sleeve having the magnet mounting surfaces. The latter provides a larger but more even air gap.

REFERENCES:
patent: 2435911 (1948-02-01), van der Woude
patent: 3234416 (1966-02-01), Weitbrecht
patent: 3713015 (1973-01-01), Frister
patent: 4443776 (1984-04-01), Cunningham
patent: 4535263 (1985-08-01), Avery
Slemon et al, "Electric Machines", Addison-Wesley, 1980, p. 357.

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