Patent · US Active

Method for detecting a motor phase fault of a motor arrangement and drive circuit for driving an electronically commutated motor

US11509254B2 · kind B2 · utility

0Cited by

7References

10Claims

0Family size

Assignee

Diehl AKO Stiftung & Co. KG · DE

Inventors

Martin Weinmann · Bad Waldsee, DE
Andreas Schmid · Duisburg, DE
Sebastian Tinius · Achern, DE

Key dates

Filing date	Aug 12, 2019
Grant date	Nov 22, 2022
Priority date	—
Expiry date	Jan 18, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH02P2201/15
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

In a method for detecting a motor phase fault of a motor arrangement, the motor phases of which are connected to a drive circuit having a DC voltage intermediate circuit and an inverter. A motor phase voltage at at least one of the motor phases with respect to a reference potential is captured while the inverter is switched off; and a voltage profile of the captured motor phase voltage is used to determine whether there is a motor phase fault on one of the motor phases of the motor arrangement.

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