摘要
针对刮板输送机负载突变时首、尾电机功率不能平均分配的问题,提出一种永磁同步电机(PMSM)驱动刮板输送机的偏差耦合控制方案。通过建立永磁同步电机的数学模型,分析永磁同步电机的速度、电流双闭环矢量控制策略,得出可采用改变两电机给定转速差的方式控制两电机转矩。通过采集两电机反馈电流,计算出两电机转矩差,使用偏差耦合算法得到两电机的速度补偿信号,调节两电机转速,实现对两电机转矩的调节。实验结果表明,采用协同控制策略后,当刮板输送机负载发生突变,两电机转速能够迅速调整,转矩在0.4 s内接近相等,且两电机转矩百分比差值维持在10%以内,基本实现功率的平均分配。
Aiming at the problem that the power of the motors of the scraper conveyor can not be evenly distributed in the case of load sudden change,a deviation coupling control scheme of the scraper conveyor driven by permanent magnet synchronous motors was proposed. By establishing the mathematical model of permanent magnet synchronous motor and analyzing the double closed-loop vector control strategy of velocity and current of permanent magnet synchronous motor,it was concluded that the torque of two motors can be controlled by changing the given speed difference. By collecting the feedback current of the two motors,the torque difference was calculated. The speed compensation signal of the two motors was obtained by using the bias coupling algorithm, and the speed of the two motors was adjusted to realize the torque adjustment. The experimental results show that when the load of the scraper conveyor breaks down under the coordinated control strategy,the speeds of the two motors can be adjusted rapidly,the torque can be close to within 0.4 s,and the percentage difference can be maintained within 10%,basically achieving the average distribution of power.
作者
靳剑兵
张红娟
耿嘉胜
靳宝全
田振东
杜亚玲
Jin Jianbing;Zhang Hongjuan;Geng Jiasheng;Jin Baoquan;Tian Zhendong;Du Yaling(College of Electrical and Power Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Key Laboratory of Advanced Transducers and Intelligent Control System,Ministry of Education and Shanxi Province,Taiyuan University of Technology,Taiyuan 030024,China;Zhaozhuang Coal Industry Co.,Ltd.,Shanxi Jinmei Group,Jincheng 048006,China)
出处
《煤矿机械》
北大核心
2019年第11期131-134,共4页
Coal Mine Machinery
基金
山西省科技重大专项项目（MJ2016-01)
关键词
刮板输送机
永磁同步电机
负载突变
功率分配
偏差耦合控制
scraper conveyor
permanent magnet synchronous motor
sudden change of load
power distribution
deviation coupling control
