Control device

A control device used to control a rotating electrical machine that is drivably coupled to an internal combustion engine and that is drivably coupled to a wheel, comprising:

• a torque current computing unit that uses a two-axis rotating coordinate system that is a rotating coordinate system having two axes that rotate in synchronization with rotation of the rotating electrical machine, and that computes two-phase current commands, which express current commands to be flowed through the rotating electrical machine in the two-axis rotating coordinate system, on the basis of a torque command that the rotating electrical machine is caused to output;
• an actual current computing unit that computes two-phase actual currents expressed in the two-axis rotating coordinate system on the basis of actual currents flowing through the rotating electrical machine;
• a current feedback control unit that varies two-phase voltage commands, which express voltage commands to be applied to the rotating electrical machine in the two-axis rotation coordinate system, such that the two-phase actual currents approach the two-phase current commands;
• and
• a voltage control unit that controls voltages to be applied to the rotating electrical machine on the basis of the two-phase voltage commands, wherein
• the torque command includes a fluctuation cancellation torque command that is a torque command for cancelling transmission torque fluctuations that are torque fluctuations transmitted from the internal combustion engine to the rotating electrical machine, and
• the current feedback control unit includes a harmonic controller that calculates the two-phase voltage commands by using a characteristic of a transfer function corresponding to a periodic function of a torque fluctuation frequency that is a frequency of the transmission torque fluctuations.