矿井提升机调速系统预测转矩控制研究  

Predictive Torque Control Method for Mine Hoist Speed Regulation System

作　　者：陈召磊[1] 曹晓冬[2] 吴轩钦[2] 

机构地区：[1]河南煤业化工集团永煤公司,河南商丘476600 [2]中国矿业大学信息与电气工程学院,江苏徐州221008

出　　处：《煤矿机械》2014年第2期32-34,共3页Coal Mine Machinery

基　　金：科技型中小企业技术创新基金重点项目(11C26213204616)

摘　　要：结合数字处理系统的离散化特点,推导出矿井提升机调速系统的转矩及磁链预测方程,并详细地分析了造成转矩脉动过大现象的原因。根据转矩和磁链误差查询离线开关表(LUT)获得有效电压矢量后,采用零矢量注入的方式对有效电压矢量的幅值进行修正,各矢量作用时间以下一采样点转矩脉动预测值最优为控制指标。搭建了基于"DSP+FPGA"的实验样机平台对上述PTC方法进行验证,结果表明控制方法能够有效地减小DTC系统低速段的转矩脉动,并获得恒定的开关频率,改善了传统矿井提升机DTC系统的控制性能。The digital processing system of the characteristics of the discrete was discussed. The torque and flux predictive functions of the mine hoist speed regulation system were solved. And the phe- nomenon of excessive torque ripple was detail analyzed. According torque and flux error check look up table （LUT） to obtain the effective voltage vector, and the zero voltage vector was added to correct the amplitude of the effective voltage vector. The action time of each vector was calculated with the objective of minimizing torque ripple at the next sampling point. Finally, an experiment was done based on ＂DSP＋FPGA＂ digital processing platform to verify the proposed torque PTC method. Experimental resuits show that the proposed method can effectively reduce the torque ripple at low speed, constant switching frequency. The PTC method siguificantly improved the performance and obtain a of traditional DTC mine hoist speed regulation system.

关 键 词：矿井提升机 预测转矩控制 转矩脉动 固定开关频率 

分 类 号：TD534[矿业工程—矿山机电]