18701480. CEASING TRANSISTOR TOGGLING IN PERMANENT MAGNET MOTOR WHEN ZERO MOTOR TORQUE IS DEMANDED (Atieva, Inc.)
Contents
CEASING TRANSISTOR TOGGLING IN PERMANENT MAGNET MOTOR WHEN ZERO MOTOR TORQUE IS DEMANDED
Organization Name
Inventor(s)
Ruxiao An of Sunnyvale CA (US)
Emad Dlala of Pleasanton CA (US)
CEASING TRANSISTOR TOGGLING IN PERMANENT MAGNET MOTOR WHEN ZERO MOTOR TORQUE IS DEMANDED
This abstract first appeared for US patent application 18701480 titled 'CEASING TRANSISTOR TOGGLING IN PERMANENT MAGNET MOTOR WHEN ZERO MOTOR TORQUE IS DEMANDED
Original Abstract Submitted
A method comprises: receiving, by a motor controller, a torque command for a permanent magnet motor of an electric vehicle, wherein the permanent magnet motor is coupled to an inverter having transistors, and wherein the permanent magnet motor has a present speed; determining a present base speed of the permanent magnet motor; and in response to the torque command meeting a zero-torque criterion while the present speed meets a below-base-speed criterion, ceasing, by the motor controller, a toggling of the transistors so that the transistors are nonconductive.
