CONVEYOR SYSTEM MULTIMOTOR DRIVE Russian patent published in 1999 - IPC

FIELD: conveyor transport. SUBSTANCE: drive has separate base and dependable drives with squirrel cage induction motors, differential reduction gears and DC motors. Series DC windings of motors are connected to controlled voltage DC common source. Drive has also active current pickups of base and dependable drives and regulators. Regulators are connected to field windings of dependable drives. Some inputs of active current pickups of dependable drives are connected with input of active current pickup of base drive. Second inputs of all active current pickups are connected with primary measuring elements. Series resistor is connected to output of active current pickup. Drive has additionally nonlinear elements with U-shaped output characteristics curve in number corresponding to number of drives. Active current pickup outputs of dependable drives are connected through corresponding nonlinear units to regulator inputs. Active current pickup output of base drive is connected through series connected resistor and corresponding nonlinear element to inputs of all regulators. EFFECT: provision of automatic equalizing of loads among motors in heavy and low load zones. 2 dwg