Patent · US Active

Reduction of the electrical resistance for an electric machine having windings arranged in grooves

US9917485B2 · kind B2 · utility

0Cited by

2References

6Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Matthias Centner · Berlin, DE
Patrick Gels · Berlin, DE
Rüdiger Schäfer · Mutterstadt, DE
Jörg Waschek · Falkensee, DE

Key dates

Filing date	Jun 6, 2013
Grant date	Mar 13, 2018
Priority date	—
Expiry date	Sep 22, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH02K3/14
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electric machine has grooves and windings, divided into strands, of electrical conductors. At least one strand has a number s of coils connected in series and arranged in the grooves. Each coil has sub-conductors connected in parallel and arranged in bundles. Each bundle is arranged in a groove at a bundle position relative to a deepest possible bundle position in the groove. The positions of all bundles in all coils define a number b of possible bundle positions of the strand. The bundles are interchanged between the coils such that each bundle is arranged in the grooves at least n times and at most n′ times at each possible bundle position, wherein n is the integer quotient in regard to the quotient of the number s and the number b, wherein n′=n if s is divisible by b and n′=n+1 if s is not divisible by b.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.