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:
Jan. 06, 2026
Filed:
Oct. 19, 2023
GM Global Technology Operations Llc, Detroit, MI (US);
Peng Peng, Columbus, OH (US);
Thomas W. Nehl, Shelby Township, MI (US);
Derek F. Lahr, Howell, MI (US);
Alireza Fatemi, Canton, MI (US);
Lei Hao, Troy, MI (US);
Suresh Gopalakrishnan, Troy, MI (US);
Avoki M. Omekanda, Rochester, MI (US);
Renato Amorim Torres, Pontiac, MI (US);
Mazharul Chowdhury, Canton, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A magnet-free electric machine. The electric machine may include a stator including a first stator winding set and a second stator winding set and a rotor including a first rotor winding set and a second rotor winding set. The electric machine may include a power transfer circuit configured for controlling a polarity and/or a phase sequence of excitation currents used in exciting the first and second stator and rotor windings, and thereby, respectively generated stator and rotor poles.