Method, device and equipment for evaluating health state of marine AC motor

The invention provides a method, device and equipment for evaluating the health state of a marine AC motor, and the method comprises the steps: converting a plurality of fault-free three-phase current signals of a normal AC motor into a standard stator current circular signal scatter diagram through the Clark transformation, converting a plurality of to-be-detected three-phase current signals of the to-be-detected AC motor into a to-be-detected sub-current circular signal diagram; performing region division on the target to-be-measured sub-current circular signal scatter diagram to obtain a plurality of first scatter regions, and performing division on the standard stator current source signal scatter diagram to obtain a plurality of second scatter regions; determining health assessment parameters according to the first coordinates of the signal points in the first scatter areas and the second coordinates of the signal points in the second scatter areas; determining a health score of the to-be-tested AC motor