Pole changeable three phase winding

Details Pole changeable three phase winding Pole changeable three phase winding

1979-09-19

1981-08-18

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

318773, H02K 300

Patent

active

042849195

ABSTRACT:
The present invention relates to a pole-changeable three-phase winding for p.sub.1 :p.sub.2 =(3m.+-.1)/3n (m and n being integers). This eliminates coils for the primary pole pair number p.sub.1 in the base winding branches and the parallel-connected null winding branches which are active only in this level. The same number of additional coils with reduced turn number are additionally series-connected between the terminals of the secondary pole pair number p.sub.2, so that at constant effective turn number w.sub.1 times the winding factor .xi..sub.1 a reduction of the copper losses is achieved.

REFERENCES:
patent: 3949253 (1976-04-01), Broadway
patent: 4013909 (1977-03-01), Broadway
patent: 4127787 (1978-11-01), Auinger
patent: 4138619 (1979-02-01), Broadway
patent: 4144470 (1979-03-01), Auinger
patent: 4200817 (1980-04-01), Bratoljic

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