Patent · US Expired

Control circuit for an electronically commutated motor

US7688011B2 · kind B2 · utility

27Cited by

4References

23Claims

0Family size

Assignee

ebm-papst St. Georgen GmbH & Co. KG · DE

Inventors

Hansjörg Berroth · Villingen-Schwenningen, DE
Frank Jeske · Tennenbronn, DE
Volker Mauch · Dunningen, DE
Arnold Kuner · St. Georgen, DE

Key dates

Filing date	Jan 17, 2006
Grant date	Mar 30, 2010
Priority date	—
Expiry date	May 8, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH02P6/28
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A control circuit for an electronically commutated motor (120), having a power stage (122) that comprises at least two semiconductor switches (216, 218) to influence the motor current. The semiconductor switches are controllable by way of commutation signals. The control circuit comprises a current measuring element (170) to make available a motor current control variable (I) dependent on the motor current, a base diode (240) that is arranged in series with the current measuring element and between the current measuring element and the at least two semiconductor switches, and a motor current setting element (180) with which the commutation signals can be influenced as a function of the motor current control variable.

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