The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 1981
Filed:
Sep. 19, 1979
Applicant:
Inventor:
Herbert Auinger, Nuremberg, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310198 ; 318773 ;
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.