FIELD: electrical engineering.
SUBSTANCE: synchronous electric drive of a belt conveyor comprises the first and next along the belt travel driven drums connected with couplings to synchronous electric motors deflecting the drums, brakes, a system of power supply frequency, voltage and current intensity control, belt speed sensors, which are installed before every driven drum, and belt tension sensors, which are installed before or behind each driven drum. Method for controlling a synchronous electric drive of a belt conveyor includes measurement of the belt speed before the driven drums, of the belt tension force before and after the driven drums, setting synchronous frequencies and torques of the synchronous electric motors, synchronizing rotation speed change of the driven drums in such a way, that the ratios of synchronous frequencies of the synchronous electric motors remain constant.
EFFECT: higher efficiency of the belt conveyor drive.
2 cl, 3 dwg
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