Patent · US Active

Methods for controlling a voltage present at an electric fan

US10833615B2 · kind B2 · utility

0Cited by

7References

18Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Dirk Hertz · Fichtenhof, DE
Florian Ringer · Vilseck, DE
Marco Schönenberg · Amberg, DE

Key dates

Filing date	Nov 19, 2018
Grant date	Nov 10, 2020
Priority date	—
Expiry date	Jan 3, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH02P7/282
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Methods for controlling a voltage present at an electric fan during a startup of the fan are disclosed herein. The fan serves to generate a flow of air for cooling a device. The method includes applying an output voltage of a power supply, which serves to supply voltage to the device, to the fan; and switching on and switching off the output voltage of the power supply applied to the fan by a switch pulse-width-modulated-controlled by a control unit so that the Root Mean Square value of the current flowing through the fan is less than a startup current of the fan.

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