METHOD OF CONTROLLING AC ELECTRONIC MOTOR AND SERVOMECHANISM TO THIS END Russian patent published in 2009 - IPC H02P7/00 

FIELD: electricity.

SUBSTANCE: in the method of controlling an ac electronic motor, three-phase supply voltage of a synchronous motor is generated from the sign of the difference between the demodulated signal of the three-phase position sensor of the rotor of the synchronous motor and the signal of the three-phase current sensor of the synchronous motor. In the servomechanism there is a three-phase relay, three-phase current sensor of the synchronous motor and a three-phase adder. The adding and subtracting inputs of the adder are respectively connected to outputs of a three-phase demodulator and a three-phase position sensor of the rotor of the synchronous motor. The output of the three-phase adder is connected to the input of the three-phase relay, the output of which is connected to the input of a three-phase converter. The output of the three-phase converter is connected to the current input of the current sensor of the synchronous motor, whose current output is connected to the synchronous motor.

EFFECT: obtaining optimum accuracy and high speed of operation of the regulator of phase current of the ac electronic motor and characteristics of the ac electronic motor, identical to characteristics of dc commutator motor.

2 cl, 1 dwg