The present invention relates to a driving apparatus which performs vector control based on an output current of an inverter. The driving apparatus of the present invention includes a vector controller (11) for transforming three-phase output currents of an inverter (10) into a torque current and a magnetization current, and controlling the torque current and the magnetization current. The vector controller (11) includes a torque-voltage control section (21) for determining a torque-voltage command value based on a deviation between a torque-current command value and the torque current, a magnetization-voltage output section (23) for outputting 0 as a magnetization-voltage command value, a target-magnetization-current determination section (26) for determining a magnetization-current command value based on a deviation between a torque-voltage command value and a target-output-voltage value, and a target-output-voltage determination section (27) for determining the target-output-voltage value.