| abstract |
The invention relates to electrical engineering and can be used in the petroleum, mining, and metallurgical industries. The aim of the invention is to improve the accuracy of torque control while maintaining speed. For this purpose, the valve electric drive is equipped with sensors 18-20 of the phase voltages of the stator of the synchronous motor 1, converters 21 and 22 of the number of phases connected with sensors 2-4 of currents and sensors 18-20 /, respectively. In the electric drive |