Control Strategy and Dynamic Behavior of Full Permanent Magnet Driving Belt Conveyor

Abstract

Aiming at the problems of low transmission efficiency, difficult operation and maintenance, and slow tension response of traditional asynchronous motor drive and hydraulic winch tension belt conveyor, a full permanent magnet driving belt conveyor integrating permanent magnetic direct driving and permanent magnet tensioning is designed. The vector control strategy and electromechanical coupling dynamics model of full permanent magnet driving system are formulated. The vector control strategy and electromechanical coupling dynamic behavior of full permanent magnet driving belt conveyor under no-load, full load and variable load starting conditions are studied by combining Matlab/Simulink modeling and simulation with coal mine field test. The results show that the full permanent magnet driving belt conveyor can realize the rapid response and dynamic adjustment of torque and speed under various working conditions, and has good dynamic characteristics. Multiple permanent magnet driving motors can maintain power balance and synchronization transmission. The permanent magnet tensioning device can realize the dynamic adjustment of tensioning force, which is beneficial to improve the driving efficiency, tensioning response speed and the coordination and controllability of the whole machine of the belt conveyor; The full permanent magnet driving system can realize intelligent driving and dynamic tensioning of belt conveyor; The simulation test of electromechanical coupling dynamics behavior is basically consistent with the motor dynamic characteristics obtained in the field test, which shows that it can meet the actual working conditions of belt conveyor in coal mine, and has high popularization and application value.