POWER SYSTEM AND MOTOR DRIVING APPARATUS INCLUDED IN POWER SYSTEM

摘要

The present invention relates to a power system comprising: a first motor; a second motor connected in parallel with the first motor; a drive unit for supplying a drive current to the first motor and the second motor; and a control unit for controlling the drive unit on the basis of the drive current and rotational speed of the first motor, wherein if the rotational speed of the first motor is different from the rotational speed of the second motor, the control unit controls the drive unit so that the rotational speed of the first motor is equal to the rotational speed of the second motor. The power system can drive two or more motors at the same speed by applying, using a single driving apparatus, a drive voltage on the basis of the rotational speed and drive current of any one of two or more motors.