Patent · US Expired

Method and circuit configuration for controlling a polyphase brushless electric motor

US7340158B2 · kind B2 · utility

4Cited by

11References

15Claims

0Family size

Assignee

Diehl AKO Stiftung & Co. KG · DE

Inventors

Stefan Zeh · Schallstadt, DE
Martin Weinmann · Bad Waldsee, DE
Alexander Muller · Steinen, DE
Valeriu Olarescu · Schallstadt, DE

Key dates

Filing date	Feb 6, 2006
Grant date	Mar 4, 2008
Priority date	—
Expiry date	Feb 6, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH02M1/0009
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method is specified for controlling a polyphase brushless electric motor, wherein the motor phase currents which are associated with the phases are produced by clocked variation of the respectively applied electrical potential. In this case, the motor phase currents flow back from the electric motor via a common return line with the peak current value in the return line being detected and being included in a controlled variable. Furthermore, a circuit configuration is specified, which is provided in a corresponding manner in order to carry out the control method. The control method and the circuit configuration allow the motor phase currents to be taken into account in the control of the electric motor in a simple and cost-effective manner.

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