FIELD: asynchronous electric drives.
SUBSTANCE: asynchronous electric drive for measuring the moment of resistance created by the motor load. The instantaneous values of currents and voltages of the stator of an asynchronous motor are measured, three-phase values of currents and voltages are converted into two-phase components of currents and voltages. At each of the time intervals, a matrix of coefficients of the equations of state of the induction motor is compiled, the matrix of error covariances is determined, the matrix gain of the Kalman filter is determined, the vector of output values is determined, the components of which are used to calculate the electromagnetic torque and the angular speed of rotation of the rotor developed by the asynchronous electric motor. According to the values of the electromagnetic torque and the angular speed of rotation of the rotor, intermediate values of the load torque are determined, the data are filtered, thereby determining the instantaneous value of the load torque of the induction motor.
EFFECT: increasing the accuracy of determining the measurement of the load moment.
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