CONTROL METHOD OF ELECTRIC DRIVE OF WOOD PROCESSING LINE DURING AUTOMATIC SWITCHING OF RESERVE Russian patent published in 2021 - IPC B27L5/02 H02P1/16 H02P3/06 

FIELD: electrical equipment.

SUBSTANCE: invention relates to electrical engineering, in particular to control of electric drive of wood processing line. Asynchronous motors (18) for driving all mechanisms (12–15) of the line are connected to outputs of three-phase independent voltage inverters (17), to the input of each of which is parallel connected C-filter (16) and common buses of direct voltage (8), to which also through smoothing throttle (7) is connected output of diode rectifier (6), input of which is connected to three-phase network (5). Three-phase network (5) containing step-down transformer (4) is connected via automatic backup device (3) to feed main feeder (1) or backup feeder (2). Electric drive is controlled by common setter of acceleration and deceleration intensity (9) at the output of which signal is generated at one of inputs of device (11). To the second input of device (11) from the output of voltage detector (10) voltage comes, the value of which changes proportionally to voltage on common buses of direct voltage (8). Output signal of autonomous inverters (17) is generated at output of device (11) and fed to inputs of control systems included in autonomous inverters (17).

EFFECT: higher reliability and efficiency of a wood processing line for veneer production.

1 cl, 1 dwg