Patent · US Active

Open-loop or closed-loop control method for a converter

US8786222B2 · kind B2 · utility

1Cited by

0References

7Claims

0Family size

Assignee

SEW-EURODRIVE GMBH & CO. KG · DE

Inventors

Harald Wolf · Darmstadt, DE
Wolfgang Hammel · Bruchsal, DE

Key dates

Filing date	May 11, 2009
Grant date	Jul 22, 2014
Priority date	—
Expiry date	Jun 24, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH02P21/26
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An open-loop or closed-loop control method for a converter which supplies an electric motor, wherein a current space vector is acquired as motor current, and the motor voltage, in particular a voltage space vector, is set, an induced voltage space vector UI is determined, which is forwarded to an integration element, a flux space vector being generated, whose angular position is perpendicular to the voltage space vector, the amount of the flux space vector corresponding to a predefined nominal value, the difference of the integration result and the flux space vector thus produced being used as feedback in the integration element.

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