SU1304158A1 - Multimotor drive - Google Patents

Abstract

The invention relates to electrical engineering and can be used in electric drives of general industrial mechanisms. The aim of the invention is eA in C, I I with an increase in reliability and efficiency. The device contains a linear contactor with four closing contacts 1-4, three of which are included in the stator circuits of the motors, and the fourth between the other terminals of the phase windings of the stators of the motor. The other terminals of the first and third phases of the stator windings through diodes 5-8 are interconnected. When the electric drive is braked, contacts 1-4 open, as a result of which a rectified current flows through all windings, which increases the braking efficiency with a small number of diodes. 1 il. (L fO with about 4: SP 00

Description

11304158-2

The invention relates to electrodiodes 4, 5, 7 and b, 8 form short-circuit technology and can be used in closed circuits and stator windings in electric drives of general industrial ki 9 and 10 electric motors flow around the mechanisms. With three-phase alternating current.

The purpose of the invention is to increase the speed. To transfer the motors from the operation and economic efficiency of the brake mode, the electrical diagram 1-4 of the linear contactor is shown in the drawing. The main drive circuitry is shown in the drawing. In this case, three short-motor drives are formed, containing closed circuits: the first phase has two asynchronous motors, the line o of the coil 9 of the first electric motor, the line contactor with the four-way diode 6, the first phase winding 10, the second contacts 1 -4, diode 5-8 chip, motor rye, second phase one output of three closing contacts winding 9 of the first electric motor, 1-3 linear contactor diode 6, diode 8, second phase winding to the mains, the other conclusions of the three -5 second electric motor, one third phase deputy repentieth 1-3 linear contacts on the electric motors of the first coil 9 of the contactor are connected to one terminals L, the diode 8, a third secondary phase winding of the first, second and third phase ob- cerned motor. In three short circuits 9, 10 of the stator of two asynchronous co-closed circuits due to the actuators, the cathode of the first diode 5 20 EMF of electromagnetic induction is combined with the anode of the second diode 6 and the rectified current flows, produced to the other output of the third phase - electromagnetic braking 9 stator of the first asynchronous electric motors.

Thus, in the proposed device, 7 is connected with the anode of the fourth dioorium with a smaller number of diode 8 and is connected to a different output. Dov's flow is ensured. the first phase winding 10 of the stator of the secondary current across all the phase windings of the asynchronous motor, one of the motors, which significantly increases the fourth closing contact 4 em of hope: the device and the cost effectiveness of the device contactor is connected to the anode.

do the first diode 5, another conclusion -.

Claims (1)

to the cathode of the fourth diode 8, the anode of the formula of the invention of diode 5 is connected to the anode of the third diode 7. and connected to other multi-drive drives containing the first and second phase L-35 D asynchronous motors, castor 9 of the stator of the first asynchronous ney contactor four motor locking, the cathode of the fourth diode 8 by the contacts, one diode, one connected to the cathode of the second diode 6 and the conclusions of the three closing contacts connected to the other leads of the second and line contactor are provided with clips of the third phase windings 10 stat ora vto-40 mains supply, the other ry asynchronous motor. the outputs of the three closing contacts of the LIstHerge are working as follows the main contactor connected to one time. the outputs of the stator phase windings of two I, asynchronous motors, cathode first When contacts 1-3 of the 45 diode are connected to the anode of the second contactor, the stator windings 9 of the diode are connected to a different terminal and 10 electric motors are connected to the third phase stator winding, and their ends the diodes of the 5-8 th asynchronous motor, the cathode of the three- and fourth contact 4 of the linear termination diode combined with the anode of the four-tact are connected to a common point. Q is the correct diode and is connected to another. For example, in the first and third phase of the first phase winding of the stator stator windings 9 of the first second asynchronous motor, one electric current flows through the output of the fourth closing contact: phase A, first phase winding, This linear contactor is connected to diode 5, one third phase winding, phase one, 5 anode of the first diode, the other output is for C; phase C, third phase winding, to the cathode of the fourth diode, about t i and dio ;: 6, contact 4 linear contacting with the fact that, for the purpose of pa, the first phase winding, phase A. T-increase of reliability and efficiency, CMR, with the contact closed, the anode of the first diode is connected to the anode 313041584 the third diode and connected to other keys to the cathode of the second diode and the sub leads of the first and second phase switches to the other terminals of the second and the stator currents of the first asynchronous motion of the second winding phase stator windings, the cathode of the fourth diode of the asynchronous motor.