Patent · US Active

Driving circuit for an EC-motor

US8941343B2 · kind B2 · utility

6Cited by

3References

7Claims

0Family size

Assignee

ebm-papst Mulfingen GmbH & Co. KG · DE

Inventors

Helmut Lipp · Assamstadt, DE
Martin Bürkert · Wendischenhof, DE
Christian Kranz · Ratingen, DE
Daniel Konig · Gerabronn, DE

Key dates

Filing date	Jun 11, 2012
Grant date	Jan 27, 2015
Priority date	—
Expiry date	Oct 24, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH02H7/093
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A control circuit (1) for an electronically commutated, direct current motor (M) without a collector with a semiconductor end stage (2) which is controlled by an electronic commutation control (4) via a driver stage (6) for the time-offset control of the stator coils (U,V,W) of the motor (M) for the purpose of producing a magnetic rotating field for a rotor depending on the rotor rotation position. Two redundant stall protection units (10, 12) monitor the motor (M) during operation for rotation of the rotor, whereby in the case of a determined stall situation, the first stall protection unit (10) deactivates the driver stage (6) and the second stall protection unit (12) shuts off the supply voltage (UVCC) for the driver stage (6).

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