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:
Mar. 10, 2026
Filed:
Oct. 10, 2023
GM Global Technology Operations Llc, Detroit, MI (US);
Mazharul Chowdhury, Canton, MI (US);
William R. Jensen, Walled Lake, MI (US);
Le Chang, Shelby Township, MI (US);
Mohammad F. Momen, Rochester Hills, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
Synchronous electric machines including a stator having a plurality of conductive windings configured for carrying alternating currents for generating a rotating magnetic field (RMF), and a hybrid rotor configured for rotating within the stator according to a torque induced by the RMF. The hybrid rotor includes a plurality of laminations stacked together axially. The laminations include a non-permanent magnet subset of the laminations having one or more through-holes configured for limiting torque ripples. The laminations include a permanent magnet subset of the laminations having one or more pockets, with the pockets each removably holding one or more permanent magnets. The permanent magnets are operable for interacting magnetically with the RMF.