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. 24, 2026
Filed:
Dec. 04, 2023
GM Global Technology Operations Llc, Detroit, MI (US);
Peng Peng, Columbus, OH (US);
Lei Hao, Troy, MI (US);
Suresh Gopalakrishnan, Troy, MI (US);
Dongxu Li, Troy, MI (US);
Renato Amorim Torres, Pontiac, MI (US);
Yilun Luo, Ann Arbor, MI (US);
Thomas W. Nehl, Shelby Township, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
An electric drive system includes an electric machine having a stator assembly and a rotor assembly. The stator assembly has a plurality of multi-phase stator windings, including a first stator winding and a second stator winding. A first inverter is adapted to feed the first stator winding. A second inverter is adapted to feed the second stator winding. The electric machine is a wound rotor machine, with a respective frequency of an alternating current (AC) in the rotor assembly being synchronized with the respective frequency of the AC in the stator assembly. The rotor assembly includes a multi-phase rotor windings. The electric machine is configured such that power transfer between the first stator winding and the second stator winding is achieved when the rotor assembly is stationary.