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. 21, 2023
Filed:
Apr. 02, 2021
Applicant:
North Carolina State University, Raleigh, NC (US);
Inventors:
Md. Sariful Islam, Raleigh, NC (US);
Iqbal Husain, Raleigh, NC (US);
Assignee:
NORTH CAROLINA STATE UNIVERSITY, Raleigh, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/27 (2022.01); H02K 1/02 (2006.01); H02K 1/276 (2022.01);
U.S. Cl.
CPC ...
H02K 1/2766 (2013.01); H02K 1/02 (2013.01);
Abstract
Various examples are provided related to machines utilizing heavy rare earth (HRE) free permanent magnets. In one example, a rotor assembly including a rotor core having a plurality of rotor slots and magnets positioned within the plurality of rotor slots. At least a portion of the magnets are free of heavy rare earth (HRE) elements. The magnets can include a combination HRE segments and HRE-free segments or can be free of HRE elements. The rotor assembly can be included in an electric machine such as, e.g., a permanent magnet (PM) machine.