Patent · US Expired

Electronically-commutated motor

US6822355B2 · kind B2 · utility

5Cited by

12References

6Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Roland Karrelmeyer · Bietigheim-Bissingen, DE
Elmar Dilger · Echterdingen, DE

Key dates

Filing date	Jul 10, 2003
Grant date	Nov 23, 2004
Priority date	—
Expiry date	Jul 10, 2023

Classification

Technology area (CPC H)Electricity
CPC primaryH02P25/089
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electronically commutated motor contains a rotor position determination, which detects a surface at which the rotor and stator poles (10 through 15; 17 through 20) diametrically oppose one another. The total surface is taken into consideration in the position determination. The pole angles (&bgr;S, &bgr;R) of the stator and rotor poles (10 through 15; 17 through 20) are each set to values at which a rotor rotation results in a surface change.

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