CPC B60W 10/08 (2013.01) [B60L 15/20 (2013.01); B60L 2240/423 (2013.01); B60W 2710/083 (2013.01)] | 20 Claims |
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.
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