Method for detecting rotor faults of inverter-fed induction motor, and a medium having computer readable program for executing the method

摘要

inverter driven induction motor rotor fault diagnosis method, and medium storing a computer program for executing the method is disclosed. An inverter driving the induction motor rotor fault diagnosis method includes the magnetic field generating step, the input current measuring step, and a rotor condition diagnosis step. Magnetic field generating step is a case of stopping the inverter drives an induction motor by using an inverter generating a magnetic field passing through the rotation axis direction of the plurality on the rotor axis of rotation perpendicular to the plane of the electric motor and the input current measuring step includes a plurality of the direction in which a magnetic field is generated measuring a plurality of input current and corresponding to, the rotor motor condition monitoring step is performed once a diagnosis of electron state by using the correspondence between the input current and the measured magnetic field generating direction. With such a configuration, a separate diagnostic equipment, without stopping the process, degradation of the motor, without performing a manual rotation, etc., it is possible to inexpensively and accurately diagnose the rotor at a high frequency of failure diagnosis of the inverter driving the induction motor. ;