Patent · US Active

Determining the flow velocity in a coolant circuit

US11910579B2 · kind B2 · utility

1Cited by

0References

9Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Ingolf Hoffmann · Herzogenaurach, DE
Horst Geyer · Erlangen, DE
Abderrahim Chahid · Hemhofen, DE

Key dates

Filing date	Nov 25, 2019
Grant date	Feb 20, 2024
Priority date	—
Expiry date	Dec 22, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH02M1/32
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A conversion device converts an input power into an output power, and gives rise to a power loss. The conversion device is cooled by a coolant circuit in which a coolant flows. A monitoring device determines, using operating data of the conversion device and/or of the coolant circuit, a flow velocity of the coolant and compares the flow velocity with a limit velocity. If the flow velocity reaches or exceeds the limit velocity, the monitoring device resorts to a special reaction. As long as the flow velocity does not reach the limit velocity, the monitoring device resorts either to no reaction or to a normal reaction that is not the same as the special reaction. The monitoring device determines the flow velocity by using a quantity of heat that is to be removed by the coolant per unit time, a local temperature of the conversion device, and an inflow temperature.

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