CPC H02P 27/08 (2013.01) [H02M 7/5395 (2013.01); H02K 2213/03 (2013.01)] | 15 Claims |
1. An electric motor control method performed by a controller, the method comprising:
obtaining an input power and an output power of an electric motor;
determining a loss power based on the input power and the output power;
determining a target d-axis current of the electric motor, wherein the target d-axis current is calculated by a calculation module based on the loss power, the calculation module comprises a tracking differentiator, and the calculation module operates in the controller; and
determining a duty ratio based on the target d-axis current and a preset q-axis current, and inputting the duty ratio into an inverter so that the inverter drives, based on the duty ratio, the electric motor to operate.
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