FIELD: electrical engineering.
SUBSTANCE: invention relates to the field of electrical engineering and can be used to regulate the loading of alternating current electric motors. To achieve the claimed result, in the method for controlling an alternating current electric motor, including setting a set value of the electromagnetic moment, measuring the current value of current and electric voltage, determining the actual value of the electromagnetic moment, the values of the electromagnetic moment are set on each of the windings, the values of mechanical power are set on each of the windings, the current values of current and electric voltage are measured in each of the windings, a signal is formed corresponding to the current angular position of the motor shaft, the value of the intrinsic inductance of each of the windings of the electric motor is determined, the total mechanical power is determined, the actual value of the electromagnetic torque is determined in each individual winding of the electric motor and the total electromagnetic torque is determined, based on the difference between the set and actual values of mechanical power and electromagnetic torque, the electric motor is controlled by regulating the voltage supplied to its windings.
EFFECT: increase the accuracy of measurements of electromagnetic torque and power.
1 cl, 2 dwg
