US 11,695,361 B2
Electric machines with efficient torque transitions
Paul Carvell, San Jose, CA (US); Amnish Singh, Fremont, CA (US); and Tate Allen Cooper, San Jose, CA (US)
Assigned to Tula eTechnology, Inc., San Jose, CA (US)
Filed by Tula eTechnology, Inc., San Jose, CA (US)
Filed on Jun. 13, 2022, as Appl. No. 17/839,254.
Claims priority of provisional application 63/210,345, filed on Jun. 14, 2021.
Prior Publication US 2022/0399844 A1, Dec. 15, 2022
Int. Cl. H02P 21/00 (2016.01); H02P 27/08 (2006.01)
CPC H02P 21/50 (2016.02) [H02P 27/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electric machine, comprising:
a polyphase machine;
a power inverter electrically connected to the polyphase machine; and
a controller electrically connected to the power inverter, wherein the controller receives a user torque command request for the polyphase machine to transition from a first torque to a second torque and wherein the controller provides switching signals to the power inverter, wherein the controller comprises a trajectory calculator that provides an optimized trajectory for transitioning the polyphase machine from the first torque to the second torque.