Patent · US Active

Method for detecting a fault condition in an electrical machine

US10088506B2 · kind B2 · utility

1Cited by

3References

18Claims

0Family size

Assignee

ABB RESEARCH LTD. · CH

Inventors

Pedro Rodriguez · Västerås, SE
Cajetan Pinto · Mumbai, IN
Maciej Orman · Radziszów, PL
Michal Orkisz · Lapeer, US
Ulf Ahrend · Karlsruhe, DE
Rolf Disselnkötter · Mauer, DE
Pawel Rzeszucinski · Kędzierzyn-Koźle, PL
James Ottewill · Grafton, GB

Key dates

Filing date	Oct 3, 2013
Grant date	Oct 2, 2018
Priority date	—
Expiry date	Feb 15, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG01R31/346
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for identifying a fault condition in an electrical machine in which at least a stator or a rotor has parallel winding branches is disclosed. A measurement is carried out for obtaining a set of circulating current values between two parallel winding branches of which each winding branch includes a single coil. A frequency analysis is applied on the set of circulating current values to obtain at least one frequency component. A fault condition of the electrical machine is determined on the basis of the at least one frequency component.

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