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. 29, 2025
Filed:
Oct. 30, 2019
North Carolina State University, Raleigh, NC (US);
NORTH CAROLINA STATE UNIVERSITY, Raleigh, NC (US);
Abstract
Various examples related to stator and rotor configurations for the improvement in torque density and/or efficiency in AC machines are presented. In one example, a bar wound stator includes a stator core with winding slots; a first group of bar type conductors in the winding slots adjacent to a proximal end adjacent to a rotor air gap surface of the stator core; and a second group of bar type conductors in the winding slots adjacent to a distal end adjacent to a back-iron section of the stator core. The first group of bar type conductors having a first cross-sectional area and the second group of bar type conductors having a second cross-sectional area greater than the first cross-sectional area. In another example, a motor includes the bar wound stator and a rotor such as, e.g., a permanent magnet rotor. The motor can be utilized in hybrid or battery electric vehicles.