To strike a balance between a response and convergence in control of a motor used for operating an internal combustion engine, and to simplify the control by reducing an except treatment.

A method for controlling a power output unit includes setting of a motor torque command Tm1* as the sum of a reference torque Tbs (S140) set based on a target rotational speed Ne* and a target torque Te* and a corrected torque Taj (S150) set based on the target rotational speed Nm1* and a rotational speed Nm1 of the motor (S160). In this case, setting of the corrected torque Taj is performed by setting the gain k1 of a proportional item after a motor rotational speed Nm1 falls within a transfer region in which the motor rotational speed Nm1 falls in the target rotational speed Nm1* as a center to a value "0", and setting a gain k2 of an integrating item to a small value. Thus, the response and the convergence in the control of the motor are allowed to be compatible, and can be processed without except treatment even at an abrupt change time of an engine request power Pe*.

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