Method and device for predicting residual life of permanent magnet synchronous motor and storage medium

The invention provides a residual life prediction method and device of a permanent magnet synchronous motor and a storage medium, and the method comprises the steps: taking a three-phase current unbalance degree and/or an electromagnetic torque unbalance degree as a main influence factor of motor failure, and building a residual life model of the permanent magnet synchronous motor; obtaining the time sequence of the three-phase current, the electromagnetic torque and the secondary influence factor of the motor failure of the permanent magnet synchronous motor as a training set, and carrying out ARIMA model training; and according to the ARTMA model, predicting values of the three-phase current, the electromagnetic torque and the secondary influence factor at the moment t, and substituting the values into the residual life model to obtain the failure moment of the permanent magnet synchronous motor. According to the scheme, the residual life of the permanent magnet synchronous motor can be predicted, and the m