SU1746483A1 - Device for control over motor with variable reactance - Google Patents

Abstract

Usage: in drives of common industrial mechanisms and machine tools. Entity: the signal of speed sensor 1 is converted into a speed code by a frequency-code converter and fed to controller 6, which calculates the values of delay and switch angles and enters them in delay 7 and switch registers 8. From the signals of sensor 4 of the rotor position, the reset pulse shaper produces signals reset for the angle counter 3, which forms the code of the angular position of the rotor. This code is compared in delay circuits 9 and inclusions 10, which produce delay and turn-on signals for circuits 11 ... 13, consisting of AND 14, 15 and OR 16. Thus, the corresponding ratio between the rotation frequency and the angles values is maintained. delays and switching-on, which allows to obtain high energy characteristics of a drive with a variable reactivity electric motor. 3 il. AND

Description

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Claims (1)

Claim A device for controlling a variable reactivity electric motor, comprising a controller, to the first output of which a delay register input is connected, and to the second output is an input of the enable register, a rotor position sensor of the electric motor, each output of which is connected to the first input of the same-phase motor control circuit, angle comparison circuit delays and switching on, characterized in that, in order to improve energy performance, a pulse sensor of the rotor speed of the electric motor rotor is introduced into it, whether frequency is a code whose input is connected to the output of the pulse speed sensor, and the output is to the controller input, a binary angle counter, the first input of which is connected to the output of the pulse speed sensor, a reset pulse generator, which is connected to the outputs of the rotor position sensor by its inputs , and the output to the second input of the binary angle counter, the first inputs of the circuit comparing the delay and inclusion angles are connected to the output of the binary angle counter, and their second inputs to the outputs of the delay and enable registers, respectively Actually, the outputs of the comparison circuits for switching on and delay angles are connected to the second and third inputs of the phase control circuits of the engine, and the output of the rotor position sensor is output to the fourth inputs of each phase control circuit 5, the signal of which is left from the output signal of the rotor position sensor connected to the first input of the same phase control scheme, at a phase ~ 2π, an angle Q = ——, pm where p is the number of pairs of rotor poles; m is the number of phases of the stator. Figz