Patent · US Active

Method and a diagnostics device for determining a fault condition in a synchronous motor

US11513155B2 · kind B2 · utility

0Cited by

4References

20Claims

0Family size

Assignee

ABB Schweiz AG · CH

Inventors

Pedro Rodriguez · Västerås, SE
Subrat Sahoo · Hagfors, SE
Cajetan Pinto · Mumbai, IN

Key dates

Filing date	Apr 26, 2018
Grant date	Nov 29, 2022
Priority date	—
Expiry date	Feb 5, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH02P29/0241
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method and device of determining a fault condition in a synchronous motor including a rotor provided with damper bars and an end ring to which the damper bars are mechanically connected thereby forming a damper cage, wherein the method includes: obtaining a first measurement of an end ring current from a first location along the end ring, processing the first measurement to thereby obtain a processing result, and determining whether a fault condition is present in the synchronous motor based on the processing result.

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