Continuous current electric machine with cylindrical air gap and

Details Continuous current electric machine with cylindrical air gap and Continuous current electric machine with cylindrical air gap and

1984-10-09

1985-05-07

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310186, 310216, H02K 2126

Patent

active

045160465

ABSTRACT:
A continuous current electric machine with a cylindrical air gap and with permanent magnet stator excitation in which stacked sheets forming the stator of the continuous current machine have closed cut-outs of a polygonal contour extending therethrough such that each closed cut-out extends into the immediate proximity of at least one of two ends of an effective region of a pole forming the air gap and leaves only a very narrow strip of the sheet between the cut-out and the air gap. At least one magnetic plate, preferably of a rare earth, is inserted in each cut-out to thereby form a permanent magnet pole. Each cut-out comprises a series of rectangular slots in the shape of a V or a U, the opening of which is oriented toward the corresponding effective region of a pole. One embodiment includes at least one wound pole formed on the stacked sheets so as to equip the electric machine with a hybrid, permanent magnet and wound inductor.

REFERENCES:
patent: 1422154 (1922-07-01), Watson
patent: 3671787 (1972-06-01), Herron
patent: 3840763 (1974-10-01), Baumann et al.
patent: 4150312 (1979-04-01), Armstrong et al.
patent: 4217513 (1980-08-01), Kohzai et al.
patent: 4358696 (1982-11-01), Liu et al.
patent: 4358697 (1982-11-01), Liu et al.

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