Control methodology to reduce motor drive loss

A system for reducing at least one of motor loss or motor drive loss in a vehicle comprising:

• a motor configured to convert electrical energy into torque;
• a sensor configured to detect motor data corresponding to at least one of a motor torque or a motor speed of the motor, the sensor including a speed sensor configured to detect the motor speed and a torque sensor configured to detect torque data corresponding to the motor torque;
• a memory configured to store:
• learned data including previously detected or determined motor torques and motor speeds and corresponding current command signals that resulted in the previously detected or determined motor torques and motor speeds, and
• testing data including optimized current commands for multiple combinations of motor torques and motor speeds;
• an estimator controller configured to estimate the motor torque based on the detected torque data, the estimated motor torque corresponding to a present torque of the motor;
• and
• a speed or torque controller coupled to the motor, the sensor, and the memory and configured to receive a speed or torque command and to determine a current command signal usable to control the motor based on the speed or torque command, the learned data, the testing data, the estimated motor torque, and an artificial intelligence algorithm, the current command signal corresponding to a commanded amount of current.

A method for reducing at least one of motor loss or motor drive loss in a vehicle comprising:

• detecting, by a sensor, motor data corresponding to at least one of a motor torque or a motor speed of a motor, the sensor including a speed sensor and a torque sensor such that the motor data includes the motor speed and the motor torque;
• storing, in a memory, testing data including optimized current commands for multiple combinations of motor torques that were determined during testing of the motor or a similar motor;
• receiving, by a speed or torque controller, a speed or torque command;
• estimating, by an estimator controller, an estimated motor torque based on the detected torque data, the estimated motor torque corresponding to a present torque of the motor;
• and
• determining, by the speed or torque controller, a current command signal usable to control the motor based on the speed or torque command, the testing data, the detected motor speed, the estimated motor torque, and an artificial intelligence algorithm, the current command signal corresponding to a commanded amount of current.