US 11,936,255 B2
Power distribution within an electric machine
Walter Wesley Pennington, III, Menlo Park, CA (US); Matthew J. Rubin, Indianapolis, IN (US); Gregory Gordon Stevenson, San Carlos, CA (US); Michael Parker Owen, St. Augustine, FL (US); Ethan Bagget Swint, Redwood City, CA (US); and Matthias Preindl, New York, NY (US)
Assigned to Tau Motors, Inc., Redwood City, CA (US)
Filed by Tau Motors, Inc., Redwood City, CA (US)
Filed on Jun. 9, 2023, as Appl. No. 18/332,038.
Application 18/332,038 is a continuation of application No. 17/634,828, granted, now 11,757,338, previously published as PCT/US2021/044207, filed on Aug. 2, 2021.
Claims priority of provisional application 63/059,929, filed on Jul. 31, 2020.
Prior Publication US 2024/0014721 A1, Jan. 11, 2024
Int. Cl. H02K 17/32 (2006.01); H02K 1/22 (2006.01); H02K 21/04 (2006.01); H02K 23/68 (2006.01); H02K 27/30 (2006.01); H02P 21/22 (2016.01); H02P 25/098 (2016.01)
CPC H02K 21/042 (2013.01) [H02K 1/223 (2013.01); H02P 21/22 (2016.02); H02P 25/098 (2016.02)] 20 Claims
OG exemplary drawing
 
1. A method of controlling an electric machine, the method comprising:
energizing stator windings of a stator of the electric machine by a stator current;
producing a stator magnetic field within the stator by the energized stator windings;
producing a corresponding rotor magnetic field within a ferromagnetic material within a rotor of the electric machine by the stator magnetic field, the rotor defining multiple rotor poles;
generating a force tangential to the rotor by a shift in the stator magnetic field;
moving the rotor by the generated force tangential to the rotor;
resisting a decay of a magnetic flux within the rotor by current within rotor coils in response to the shift in the stator magnetic field, wherein the stator magnetic field and the rotor maintain synchronicity with one another during operation of the electric machine; and
achieving a target operational output of the electric machine.