Patent · US Active

Method and circuit for producing rotor position signals and for the commutation of brushless direct-current motors, without using sensors

US8144439B2 · kind B2 · utility

1Cited by

1References

13Claims

0Family size

Assignee

TRINAMIC MOTION CONTROL GMBH & CO. KG · DE

Inventors

Lars Larsson · Hamburg, DE
Bernhard Dwersteg · Hamburg, DE

Key dates

Filing date	Nov 30, 2008
Grant date	Mar 27, 2012
Priority date	—
Expiry date	Jun 24, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH02P6/188
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method and a circuit are provided for the commutation of brushless direct-current motors (BLDC motors), without using sensors, and especially to a method and a circuit for producing rotor position signals, without using sensors, for the commutation of brushless direct-current motors. In the method and the circuit Hall sensor signals are emulated without sensors and rotor position signals free of disturbing pulses and with a correct phase position are generated from said signals. The rotor position signals can be used to carry out a reliable, sensor-free commutation.

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