Pole changeable three phase winding

Details Pole changeable three phase winding Pole changeable three phase winding

1977-06-30

1979-03-13

Rubinson, Gene Z.

Electrical generator or motor structure

Dynamoelectric

Rotary

318773, H02K 300

Patent

active

041444701

ABSTRACT:
A pole changeable three phase winding for a fractional pole pair ratio p.sub.1 :p.sub.2 = (3m .+-. 1)/3n with p.sub.2 = 3n being an integral multiple of the number of phases and m and n being positive integers.
Each phase winding for the first number of poles 2p.sub.1 consists of 2p.sub.1 /t equal winding branches, of which a number G, divisible by three, of so-called base winding-branches carry current for the first number of poles 2p.sub.1 and for the second number of poles 2p.sub.2, where one third of each of the base winding branches, for the second number of poles 2p.sub.2, are assigned to all three phase windings. The remaining number N of winding branches are designed as zero branches which are ineffective for the second number of poles 2p.sub.2, so that a division into G base winding branches and N zero branches according to G + N = 2p.sub.1 /t takes place, where t is an integral divisor of 2p.sub.1.

REFERENCES:
patent: 3794870 (1974-02-01), Broadway et al.
patent: 3927358 (1975-12-01), Broadway et al.
patent: 3949253 (1976-04-01), Broadway et al.
patent: 4013909 (1977-03-01), Broadway et al.
patent: 4075543 (1978-02-01), Uyen

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