针对刮板输送机传统异步电机驱动系统传动效率低、工作能耗高以及永磁直驱系统径向尺寸大难以适应综采工作面安装空间及过载工况等问题，设计了一种新型永磁电机半直驱系统，利用MATLAB/Simulink仿真软件与台架试验研究了永磁半直驱刮板输送机的机−电耦合动力学行为。首先，基于永磁电机驱动技术，以SGZ1000/2000型刮板输送机为例，设计了一种永磁电机半直驱系统，并完成了驱动系统关键参数设计。其次，推导齿轮传动系统动力学模型，基于状态空间方程建模法搭建永磁电机半直驱刮板输送机的机−电耦合动力学仿真模型，通过仿真试验研究了永磁电机半直驱刮板输送机在多种工况下的机−电耦合动力学行为；结果表明：永磁电机半直驱系统在空载启动定常落煤、非定常落煤以及故障后满载启动3种工况下，能够实现零速重载运行、输出转速与电磁转矩的快速响应以及动态调节；在启动瞬间与负载突变下，链条速度、加速度与张力会发生明显波动，其中：在机头与机尾链轮处的波动峰值最大；随着链条传递波动峰值会发生衰减，距离机头与机尾链轮越远，波动峰值越小。再次，利用永磁电机半直驱系统试验台，开展空载启动落煤与满载启动模拟试验，得到了永磁电机半直驱系统的动态特性，试验结果与机−电耦合动力学模型的仿真结果基本一致。最后，基于台架试验性能参数，通过对比永磁电机半直驱系统与传统异步电机驱动系统的驱动性能后得到：永磁电机半直驱系统在全负载点的驱动效率均优于传统异步电机驱动系统，至少提升了16.3%以上，可显著提高矿山运输装备的节电率，有助于推进矿山朝着绿色低碳方向发展。

Aiming at the problems of low transmission efficiency and high energy consumption of the traditional induction motor drive system of the scraper conveyor, and the radial size of the permanent magnet direct driving system which is too large and difficult to be installed in the downhole working face, a new type of semi-direct driving system of permanent magnet motors is designed, and the electromechanical coupling dynamics behavior of the semi-direct drive scraper conveyor of permanent magnet is investigated by using the simulation software of MATLAB/Simulink and the test of the bench. First, a semi-direct driving system based on permanent magnet drive technology was designed using the SGZ1000/2000 type scraper conveyor as an example, and the key parameters of the drive system were designed. Then, the dynamic model of the gear transmission system was derived, and a simulation model of the electromechanical coupling dynamics of the permanent magnet motor semi-direct driving scraper conveyor was built based on the state space equation modelling method. On this basis, the electromechanical coupling dynamics behavior of the permanent magnet motor semi-direct driving scraper conveyor under various working conditions was investigated through simulation experiments. The results show that the semi-direct driving system of the permanent magnet motor could realize no-load and heavy-duty operation, fast response of output speed and electromagnetic torque, and dynamic adjustment under the three working conditions of no-load start of constant coal drop, non-constant coal drop, and full-load start after failure; At the moment of starting and under the sudden change of load, the chain speed, acceleration and tension fluctuate significantly, among which the fluctuation peaks are largest in the sprockets of the head and tail; as the fluctuation peaks of the chain transmission decay, the farther away from the head and tail sprockets, the smaller the fluctuation peaks. The fluctuation peaks are attenuated as the chain passes, and the farther away from the head and tail sprockets, the smaller the fluctuation peaks are. Again, using the permanent magnet motor semi-direct driving system test bench, the simulation test of no-load start-up coal drop and full-load start-up is carried out to obtain the dynamic characteristics of the permanent magnet motor semi-direct driving system, and the test results are basically consistent with the simulation results of the electromechanical coupling dynamics model. Finally, based on the experimental performance parameters obtained from the permanent magnet motor semi-direct driving system test bench, after comparing the output torque, electromagnetic torque and other driving performance of the permanent magnet motor semi-direct drive system and the traditional induction motor drive system, we could see that the driving efficiency of the permanent magnet motor semi-direct driving system is better than that of the traditional induction motor driving system at the full load point, which is at least more than 16.3%, which could significantly improve the power saving rate of mine transportation equipment and help promote the development of mining in the green and low-carbon direction. It can significantly improve the power saving rate of mine haulage equipment and help promote the development of mines in the green and low-carbon direction.