A motor 101 is a device that converts electrical energy into mechanical energy by using a force that a conductor where a current flows receives in a magnetic field. The motor may be classified into a DC motor and an AC motor according to the type of power source, and the motor 101 in the embodiment of the present disclosure refers to an AC motor. The AC motor may be classified again into a three-phase AC motor and a single-phase AC motor, and the embodiment of the present disclosure will be described based on the three-phase AC motor, for convenience, even though it is not specifically limited to the type of AC motor.
The motor control apparatus 100 estimates a rotor position of the motor 101 and controls the operation in a sensorless manner. The motor control apparatus 100 may include a current controller 110, a high frequency voltage generator 120, an inverter 140 and an angle estimator 180, without being limited thereto, and may include only some of the above components or further include additional components.