The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 09, 2004
Filed:
May. 17, 2002
Max Hobelsberger, Wuerenlingen, CH;
Ingo Kirchhoff, Zurich, CH;
Eric Nodwell, Vancouver, CA;
Zlatimir Posedel, Neuenhof, CH;
Alstom (Switzerland) LTD, Baden, CH;
Abstract
The present invention relates to a method, an apparatus and a computer program for inspecting laminated iron cores ( ) of electrical machines for interlamination shorts, in which the laminated iron core ( ) is magnetized by means of an auxiliary winding, and the iron surface is scanned by means of at least one measurement coil arrangement ( ) with a downstream measurement device. In this case, unique and quantifiable localization of interlamination shorts is achieved by using both the phase ( ) and the amplitude ( ) of the electrical signal which is induced in the at least one measurement coil arrangement ( ), in combined form.