| 摘要 |
The invention relates to an apparatus and method for diagnosing flaws in the rotor of an induction motor, and to a medium on which is recorded a computer-readable program for executing the method. The apparatus for diagnosing flaws in the rotor of an induction motor comprises a voltage supply unit, a current measuring unit, a reactance computing unit, and an eccentricity diagnosing unit. The voltage supply unit supplies a single-phase voltage to the induction motor. The current measuring unit measures the current supplied to the induction motor due to the supplied voltage. The reactance computing unit computes the reactance of the induction motor by using the voltage supplied to the motor and the measured current during the rotation of the rotor of the induction motor. The eccentricity diagnosing unit diagnoses that the induction motor air gap is eccentric if the reactance value computed during one revolution of the rotor of the induction motor is always greater than a predetermined reactance value. By virtue of this arrangement, the apparatus for diagnosing flaws in the rotor of an induction motor according to the present invention may be applied to any type of an induction motor, thereby facilitating the diagnosis of induction-motor eccentricity even without additional expensive equipment. |
