Stator assembly having magnet retention by mechanical wedge cons

Details Stator assembly having magnet retention by mechanical wedge cons Stator assembly having magnet retention by mechanical wedge cons

1989-08-23

1990-11-27

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 42, 310 91, 310214, 310258, H02K 118

Patent

active

049738712

ABSTRACT:
A stator assembly for a d.c. electric motor/generator has a pair of permanent magnet segments located on the interior surface of the yoke. The magnet segments are held in place by a pair of wedges which are attached to the yoke. The wedges are tapered inwardly and the magnet segments are tapered outwardly to hold the magnet segments in place against the interior surface of the yoke. The tapered magnet segments also reduce cogging torques produced on the armature due to the gradual fall off of the magnetic flux at the tapered side edges of the magnet segments.

REFERENCES:
patent: 2602098 (1952-07-01), Ross
patent: 2683826 (1954-07-01), Staak
patent: 3090877 (1963-05-01), Baumhart
patent: 3091713 (1963-05-01), Latta
patent: 3249780 (1966-05-01), Ibrahim
patent: 3873864 (1975-03-01), Apostoleris
patent: 4071794 (1978-01-01), Schoen
patent: 4155021 (1979-05-01), Corbach
patent: 4237394 (1980-12-01), Aoki
patent: 4322646 (1982-03-01), Persson
patent: 4542314 (1985-09-01), Corbach

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