Patent ID: 11938918
Assignee: STEERING SOLUTIONS IP HOLDING CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 0:
1. A method of controlling operation of an electric machine, comprising:
determining a voltage-based torque limit based on a voltage constraint of a direct current (DC) bus supplying power to an inverter for powering the electric machine;
determining a motor current-based torque limit based on a motor current limit;
determining a supply current-based torque limit based on a supply rating, to supply current to the inverter, of the DC bus;
determining a regenerative current-based torque limit based on a receive rating, to receive current from the inverter, of the DC bus;
determining a final torque limit based on the voltage-based torque limit, the motor current-based torque limit, the supply current-based torque limit, and the regenerative current-based torque limit;
determining a limited command torque based on a torque command and the final torque limit; and
calculating at least one current command based on, at least, the limited command torque.