Patent · US Active

Assembly for monitoring a winding threshold temperature

US11581727B2 · kind B2 · utility

0Cited by

5References

7Claims

0Family size

Assignee

ebm-papst Mulfingen GmbH & Co. KG · DE

Inventors

Gerd Futterlieb · Obersontheim, DE
Jens Rössler · Mulfingen, DE
Malte Pils · Ilshofen, DE
Oliver Kleinheinz · Schrozberg, DE

Key dates

Filing date	Sep 14, 2018
Grant date	Feb 14, 2023
Priority date	—
Expiry date	Apr 22, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH02H7/0854
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A temperature monitoring device for protecting the winding of an electronically commutated electric motor from being heated over a specified limit temperature TG regardless of the rotational speed includes a phase current detection device for detecting the phase current IWinding for the motor windings, an overcurrent switch-off device for switching off the electric motor if a maximum permissible phase current IShutdown is exceeded, and an overcurrent monitoring device, which is connected to the overcurrent switch-off device, in order to transmit to it a switch-off signal if the detected phase current IWinding exceeds the maximum permissible phase current IShutdown ascertained by a detection and computing device, wherein an algorithm in which the measured ambient temperature TU is incorporated is used when ascertaining the maximum permissible phase current IShutdown.

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