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. 08, 2016
Filed:
Feb. 25, 2016
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Thomas A. Nondahl, Greenfield, WI (US);
Jingbo Liu, Grafton, WI (US);
Semyon Royak, Orange Village, OH (US);
Peter B. Schmidt, Franklin, WI (US);
Ehsan Al-Nabi, Cambridge, CA;
Jingya Dai, Burnaby, CA;
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Abstract
Disclosed examples include methods, computer readable mediums and motor drive power conversion systems for sensorless speed control of a motor driven by an inverter through an intervening filter, a transformer and a motor cable, in which sensorless vector control is used to regulate the motor speed based on a speed feedback value computed according to voltage or current values associated with the motor drive using an observer having formulas and impedance parameters of the filter, the transformer, the motor cable and the motor.