Patent · US Active

Method for monitoring a coil temperature

US11898917B2 · kind B2 · utility

0Cited by

3References

12Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Zeljko Jajtic · Birkenfeld, DE
Peter Sachsenhauser · Au, DE
Jürgen Böhling · Dachau, DE
Tobias Taubald · Munich, DE
Christian Volmert · Munich, DE

Key dates

Filing date	Aug 4, 2021
Grant date	Feb 13, 2024
Priority date	—
Expiry date	Aug 4, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG01K2217/00
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In a method for monitoring a winding temperature of a winding of an electric machine powered by a converter, a heating power applied to the winding of the electric machine is determined and evaluated using a thermal model. A relative increase in a resistance of the winding, when the winding heats up, is determined from the heating power in comparison with a standard reference value for 20° C. winding temperature. The winding temperature is calculated from the relative increase in the resistance, and a warning signal and/or a switch-off signal is generated when a critical winding temperature value is exceeded.

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