A motor control device that detects a rotor position of a permanent magnetic synchronous motor through sensorless control, the motor control device comprising: current detecting means for detecting, via an inverter, an electric current flowing through a coil of the motor; applied voltage detecting means for detecting, via the inverter, a voltage applied to the coil of the motor; rotor position detecting means for detecting the rotor position on the basis of the electric current detected by the current detecting means and the voltage detected by the applied voltage detecting means; revolution number detecting means for detecting a number of revolutions of the motor on the basis of the rotor position detected by the rotor position detecting means; and phase voltage setting means for setting a target current in current vector control based on the rotor position detected by the rotor position detecting means and setting a target voltage on the basis of the target current and the number of revolutions detected by the revolution number detecting means, characterized in that the phase voltage setting means defines an actual current phase region including a current phase error range based on parameters including at least an individual difference of the motor, an individual difference of the inverter, or individual differences of both the motor and the inverter, and defines a stable operation current phase region in which the rotor position can be detected through the sensorless control, and sets, as the target current, an electric current obtained by adding a predetermined phase difference corresponding to the number of revolutions detected by the revolution number detecting means to an electric current set by the current vector control such that the actual current phase region is within the stable operation current phase region. current detecting means for detecting, via an inverter, an electric current flowing through a coil of the motor; applied voltage detecting means for detecting, via the inverter, a voltage applied to the coil of the motor; rotor position detecting means for detecting the rotor position on the basis of the electric current detected by the current detecting means and the voltage detected by the applied voltage detecting means; revolution number detecting means for detecting a number of revolutions of the motor on the basis of the rotor position detected by the rotor position detecting means; and phase voltage setting means for setting a target current in current vector control based on the rotor position detected by the rotor position detecting means and setting a target voltage on the basis of the target current and the number of revolutions detected by the revolution number detecting means, characterized in that the phase voltage setting means defines an actual current phase region including a current phase error range based on parameters including at least an individual difference of the motor, an individual difference of the inverter, or individual differences of both the motor and the inverter, and defines a stable operation current phase region in which the rotor position can be detected through the sensorless control, and sets, as the target current, an electric current obtained by adding a predetermined phase difference corresponding to the number of revolutions detected by the revolution number detecting means to an electric current set by the current vector control such that the actual current phase region is within the stable operation current phase region.