Patent · US Expired

Method and device for measuring the temperature of a brushless d-c motor

US4879497A · kind A · utility

17Cited by

0References

8Claims

0Family size

Assignee

Heidelberger Druckmaschinen AG · DE

Inventors

Helmut Meyer · Hilden, DE
Jurgen Seeberger · Baunach, DE

Key dates

Filing date	Oct 27, 1988
Grant date	Nov 7, 1989
Priority date	—
Expiry date	Oct 27, 2008

Classification

Technology area (CPC H)Electricity
CPC primaryH02P29/67
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for determining the temperature of a brushless d-c motor with a permanent-magnet rotor and an at least three-phase winding with electronic commutation including determining the curve of an EMF induced in a winding during one phase wherein the winding is in currentless condition, and evaluating the temperature therefrom.

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