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:
Oct. 06, 2020
Filed:
Dec. 15, 2016
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Chun Tang, Canton, MI (US);
Wei Wu, Northville, MI (US);
Feng Liang, Troy, MI (US);
Michael W. Degner, Novi, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K 1/27 (2006.01); H02K 21/14 (2006.01);
U.S. Cl.
CPC ...
H02K 1/2766 (2013.01); H02K 1/2773 (2013.01); H02K 21/14 (2013.01); H02K 2201/00 (2013.01); H02K 2213/03 (2013.01);
Abstract
An electric machine may include a rotor defining a cavity containing a magnet, an outer periphery and a top bridge therebetween. The top bridge defines at least two segments. Each of the segments has a width that is minimum closest to a Q-axis, is maximum closest to a D-axis, and monotonically increases from the minimum to the maximum such that during operation a rate of change of rotor magnetomotive force associated with each segment differs.