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:
May. 03, 2016
Filed:
Jan. 30, 2013
Fts Computertechnik Gmbh, Vienna, AT;
Eric Schmidt, Groβkrut, AT;
FTS Computertechnik GmbH, Vienna, AT;
Abstract
A method for monitoring the short-circuiting switching device of a three-phase motor () for driving vehicles, which is fed from a DC voltage source () via a controlled converter (), wherein the short-circuiting switching device () actuated by a control logic () is connected to the inputs of the motor, and the motor currents and/or motor voltages are measured, and a predetermined test pattern, which is different from the voltage/current profiles during operation, is generated with the aid of the controlled converter () during a test phase and is supplied to the motor (), the short-circuiting switching device is actuated for the activation thereof, the current and/or voltage profile is detected during the test phase by opening and closing of short-circuiting contacts and, on the basis of the current and/or voltage distribution in the individual motor phases, the correct open-ing/closing of the short-circuiting contacts is detected and evaluated.