Polyphase direct current motor

Details Polyphase direct current motor Polyphase direct current motor

1989-08-03

1991-04-09

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 67R, 310154, 310156, 310179, 310184, 310195, 310198, H02K 1712

Patent

active

050067451

ABSTRACT:
A three-phase direct-current motor has a field magnet having P field poles positioned as a circular array at angularly equally spaced intervals, and an armature having cores providing N slots with three-phase coils disposed therein, either the field magnet or the armature being rotatable with respect to the other. P and N are defined by P=2(4n+3) and N=3(2n+1) where n is an integer of 1 or more, and being selected such that the least common multiple of N and P is equal to N.times.P. Alternatively, P and N are defined by P=2(3n.+-.1) and N=6n where n is an integer of 2 or more.

REFERENCES:
patent: 3794870 (1974-02-01), Broadway
patent: 3909646 (1975-09-01), Peterson
patent: 4013909 (1977-03-01), Broadway
patent: 4338534 (1982-07-01), Broadway
patent: 4672251 (1987-06-01), Broadway
patent: 4692645 (1987-09-01), Gotou
patent: 4774428 (1988-09-01), Konecny

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