Patent · US Expired

Method of making a two-layer lap winding for a multiphase electrical machine

US7302749B2 · kind B2 · utility

2Cited by

3References

7Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Helmut Kreuzer · Schwieberdingen, DE
Eberhard Rau · Ditzingen, DE
Reinhard Bezner · Gemmrigheim, DE

Key dates

Filing date	May 10, 2004
Grant date	Dec 4, 2007
Priority date	—
Expiry date	Jun 22, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49174
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The method of making a two-layer lap winding (12) for a multiphase electrical machine includes the steps of winding a first coil unit (20) of a first phase winding (14) around a winding bar (10); subsequently laying a coil connector (18) of the first phase winding (14) in a first direction and then winding at least one other coil unit (16) of at least one other phase winding (14) around the winding bar (10) and over the coil connector (18). Subsequently a second coil unit (22) of the first phase winding (14) is wound around the winding bar (10) following all first coil units of all phase windings and after all coil connectors from the first coil units are laid. A method of making a stator from the two-layer lap winding (12) is also described.

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