Patent · US Active

Electric machine with different stator pole spacings

US9590480B2 · kind B2 · utility

0Cited by

10References

11Claims

0Family size

Assignee

L-3 COMMUNICATIONS MAGNET-MOTOR GMBH · DE

Inventors

Roland Hagenlocher · Planegg, DE
Jens Steffen · Frankfurt am Main, DE
Anton Muller · Wetter, DE
Peter Ehrhart · Birkenfeld, DE

Key dates

Filing date	Nov 29, 2010
Grant date	Mar 7, 2017
Priority date	—
Expiry date	Sep 25, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH02K11/33
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electric machine comprises a rotor (200) equipped with permanent magnets (204, 206, 208, 210), and a stator (100) equipped with electromagnetic poles. The electric machine is characterized in that several adjacent electromagnetic poles respectively constitute an electromagnetic pole group in which the adjacent electromagnetic poles are spaced apart at a first electromagnetic pole spacing, that adjacent electromagnetic poles belonging to different electromagnetic pole groups are spaced apart at an electromagnetic pole spacing greater than said first electromagnetic pole spacing, that each electromagnetic pole group has an even number of electromagnetic poles, and that adjacent electromagnetic poles of an electromagnetic pole group are linked to each other so as to generate magnetic fields of opposite direction in operation.

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