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:
Feb. 27, 2018
Filed:
Feb. 16, 2015
Method for detecting a short circuit in a synchronous machine fitted with an angular position sensor
Lohr Electromecanique, Hagenbieten, FR;
Pierre Dumas, Strasbourg, FR;
LOHR ELECTROMECANIQUE, Hangenbieten, FR;
Abstract
The invention relates to a method for detecting a short circuit between the phases of a polyphase synchronous machine () comprising a stator () and a rotor (), said machine being fitted with at least one angular position sensor () of the rotor (), the rotor () comprising means for generating a magnetic induction provided to move said rotor around the stator (), the angular position sensor () comprising at least two magnetic induction measurement sensors (), the induction measurement sensors () extending to an axial end () of the rotor (), facing and immediately adjacent to the axial edges () of the means for generating a magnetic induction, characterized in that said method consists of: i1) using the values measured and supplied by the induction measurement sensors, i2) calculating the gradient of the curve of the measured values as a function of time, i3) comparing the calculated gradient with a threshold value, Vs, and i4) if the calculated gradient is greater than or equal to the threshold value, Vs, generating a warning signal, S, using an electronic unit and, if this is not the case, returning to step i1).