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:
Jul. 25, 2017
Filed:
Jan. 28, 2015
Thomas Nondahl, Greenfield, WI (US);
Jingbo Liu, Grafton, WI (US);
Semyon Royak, Beachwood, OH (US);
Peter B. Schmidt, Franklin, WI (US);
Jingya Dai, Kitchener, CA;
Ehsan Al-nabi, Cambridge, CA;
Thomas Nondahl, Greenfield, WI (US);
Jingbo Liu, Grafton, WI (US);
Semyon Royak, Beachwood, OH (US);
Peter B. Schmidt, Franklin, WI (US);
Jingya Dai, Kitchener, CA;
Ehsan Al-nabi, Cambridge, CA;
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Abstract
Motor drive control apparatus and methods are presented for speed reversal control for drives used with output filters and transformers using a high or maximal drive current command to facilitate dissipation of regenerative energy seen in this system during speed reversal with open loop control to reverse the spin direction of a driven motor while quickly transitioning through zero speed.