Patent · US Active

Driving circuit for an electric motor

US9065275B2 · kind B2 · utility

0Cited by

8References

26Claims

0Family size

Assignee

Infineon Technologies Austria AG · AT

Inventors

Benno Koeppl · Markt Indersdorf, DE
Andre Roger · Munich, DE
Matthias Bogus · Munich, DE
Philip Georg Brockerhoff · Munich, DE

Key dates

Filing date	Aug 26, 2013
Grant date	Jun 23, 2015
Priority date	—
Expiry date	Oct 4, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH02H7/0844
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

In various embodiments a circuit arrangement is provided, having a bridge circuit including at least two switches connected in series; a bridge node which may provide a phase voltage arranged between the at least two switches; an electric motor having at least one phase winding coupled with the bridge node; a decoupling switch; a controller, wherein in an error case the controller may be configured to switch off the at least two switches, to determine whether a predefined condition is satisfied, and to one of delayed switching off the decoupling switch; and switching off the at least two switches and the decoupling switch simultaneously, depending upon whether the predefined condition is satisfied; wherein the controller may determine that the predefined condition is satisfied when the decoupling switch may be switched off without damage from the current applied to it when the at least two switches are switched off.

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