Patent · US Expired

Method for operating a brushless direct current motor

US6838842B2 · kind B2 · utility

9Cited by

7References

9Claims

0Family size

Assignees

Conti Temic microelectronic GmbH · DE
Daimlerchrysler AG · US

Inventors

Hans-Peter Feustel · Roth, DE
Reinhard Orthmann · Leonberg, DE

Key dates

Filing date	Jun 28, 2001
Grant date	Jan 4, 2005
Priority date	—
Expiry date	Jun 28, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH02P6/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A brushless, synchronous direct current motor is operated by supplying a direct current voltage as an input voltage for commutating the motor phase windings. The speed of the synchronous motor is modified or varied in two speed ranges. In the first speed range, a linear change of the input voltage is carried out up to a speed threshold value. In the second speed range with higher speeds than in the first speed range, a vector modification of the input voltage is carried out, for example for controlling the speed of a fan motor.

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