| Summary: | In view of problems of low efficiency, difficult to guarantee speed synchronization and power balance of double-motor for that traditional dual-motor driving control system of belt conveyor adopts drive method of hydraulic coupler or liquid-viscosity driving device, a design scheme of dual-motor driving control system of belt conveyor based on direct torque control strategy was put forward. The system adopts one rectifier and two contravariant combined converter to drive the belt conveyor with master-slave control mode, and the master inverter adjusts output torque according to rated output power ratio of the two motor, so as to the system can run stably with a given speed. The simulation results show that the system realizes synchronous control of speed and torque of the double motor of belt conveyor, and implements power balance with good dynamic and static performance.
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