煤矿井下排水泵的双电机同步控制策略分析

Analysis of dual motor synchronous control strategy for underground drainage pump in coal mine

为了提高煤矿井下双电机同步控制系统的稳定性,在永磁同步电机矢量控制的研究基础上,分析了机械和电子2种同步控制方法,认为电子同步控制方法更适合煤矿井下双电机同步控制。针对双永磁同步电机控制策略中并行控制、主从控制、偏差耦合控制和交叉耦合控制4种控制方式进行仿真研究。结果表明,并行控制方式结构简单,无干扰时同步精度高,但是其抗干扰性能较弱,控制精度在紧急情况下不够准确;仅靠主从控制不能够解决从电机跟踪滞后的问题,偏差耦合难以设计;交叉耦合控制结构更适用于双电机的同步运作,可以保证较小的相位差。双电机同步驱动水泵控制设备在煤矿井下排水系统中具有一定的应用价值。

In order to improve the stability of dual motor synchronous control system in coal mine, based on the research of vector control of permanent magnet synchronous motor, the mechanical and electronic synchronous control methods are analyzed, which shows that the electronic synchronous control method is more suitable for dual motor synchronous control in coal mine.The simulation of parallel control, master-slave control, deviation coupling control and cross coupling control in the control strategy of dual permanent magnet synchronous motor shows that the parallel control mode has simple structure and high synchronization accuracy without interference, but its anti-interference performance is weak and the control accuracy is not accurate enough in emergency;The master-slave control alone can not solve the problem of tracking lag of slave motor, and the deviation coupling is difficult to design;The cross coupling control structure is more suitable for the synchronous operation of two motors and can ensure small phase difference.The research shows that the double motor synchronous drive water pump control equipment has a certain application value in the underground drainage system of coal mine.