CPC H02P 21/05 (2013.01) [H02P 21/18 (2016.02); H02P 27/12 (2013.01)] | 11 Claims |
1. An electric motor control method for controlling an electric motor based on a first torque command value corresponding to a required output of the electric motor, the electric motor control method comprising:
a vibration damping step of calculating a second torque command value by correcting the first torque command value by a vibration compensation torque, the vibration compensation torque being a torque correction value for suppressing vibration in an electric motor rotation speed;
a limiting step of limiting the vibration compensation torque based on a limit request suggesting amount, the limit request suggesting amount being a parameter suggesting a situation in which suppression of vibration in the electric motor rotation speed is to be limited;
a limit level determination step of determining a limit level representing a degree of limit on the vibration compensation torque; and
a torque control step of calculating a voltage command value by feeding back a torque suggesting amount suggesting an electric motor torque to the second torque command value, the voltage command value being a command value of a voltage supplied from a predetermined power source to the electric motor, wherein
in the torque control step, a feedback gain of the torque suggesting amount is determined with reference to the limit level.
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