基于有限集模型预测的电机模拟器故障电流跟踪方法
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摘要
电机故障情况下电机模拟器跟踪定子电流动态响应慢、精度低,为了解决这一问题,提出一种基于有限集模型预测的故障电流跟踪方法。首先,构建基于信号调理的故障注入器,根据给定指令设定预测控制器的参考电流信号;然后,建立电机模拟器负载电流预测模型,在每一个采样周期内,计算所有开关状态下负载电流的预测值;最后,构建评价函数,计算每一个扇区对应的评价函数值,选取最小评价函数值对应的扇区内的开关状态作为电机模拟器下一个采样周期的开关状态。研究结果表明:本文提出的方法可以有效地跟踪电机模拟器故障电流,与传统PI调节相比,动态响应速度更快,跟踪精度更高。
Aiming at the problem of slow dynamic response and low accuracy during the process of tracking motor fault stator currents by motor simulator, a fault current tracking method based on finite set model prediction(FSMP) was proposed. First, the fault injector based on signal conditioning was constructed, and the reference current signal of the predictive controller was set according to the given instruction. Then, the load current prediction model of motor simulator was set up, and the prediction value of the load current in all switching states was calculated in each sampling period. Finally, the evaluation function was constructed, and the corresponding evaluation function value of each sector was calculated. The switch state in the sector corresponding to the minimum evaluation was used as the switch state of the next sampling period of the motor simulator. The research results show that fault current of motor simulator can be effectively tracked by the proposed method. Compared with the traditional PI regulation, the dynamic response of proposed method is faster and the tracking precision is higher.
Aiming at the problem of slow dynamic response and low accuracy during the process of tracking motor fault stator currents by motor simulator, a fault current tracking method based on finite set model prediction(FSMP) was proposed. First, the fault injector based on signal conditioning was constructed, and the reference current signal of the predictive controller was set according to the given instruction. Then, the load current prediction model of motor simulator was set up, and the prediction value of the load current in all switching states was calculated in each sampling period. Finally, the evaluation function was constructed, and the corresponding evaluation function value of each sector was calculated. The switch state in the sector corresponding to the minimum evaluation was used as the switch state of the next sampling period of the motor simulator. The research results show that fault current of motor simulator can be effectively tracked by the proposed method. Compared with the traditional PI regulation, the dynamic response of proposed method is faster and the tracking precision is higher.
引文
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[17]YANG Chunhua,YANG Chao,PENG Tao,et al.A faultinjection strategy for traction drive control systems[J].IEEETransactions on Industrial Electronics,2017,64(7):5719-5727.
[18]BHATTACHARYA S,SHARMA S K,MASCARELLA D,et al.Sub-fundamental cycle switching frequency variation for switching losses reduction of a two-level inverter traction drive[J].IEEE Transactions on Transportation Electrification,2017,3(3):646-655.
[19]SIZOV G Y,SAYED-AHMED A,YEH C C,et al.Analysis and diagnostics of adjacent and nonadjacent broken rotor-bar faults in squirrel-cage induction machines[J].IEEE Transactions on Industrial Electronics,2009,56(11):4627-4641.
[2]尹进田,谢永芳,阳春华,等.基于RVMD的牵引电机转子初期断条故障监测[J].控制与决策,2018,33(3):497-502.YIN Jintian,XIE Yongfang,YANG Chunhua,et al.Monitoring of incipient rotor bars broken fault in traction motors based on RVMD method[J].Control and Decision,2018,33(3):497-502.
[3]XIE Ying,CHEN Peng,LI Fei,et al.Electromagnetic forces signature and vibration characteristic for diagnosis broken bars in squirrel cage induction motors[J].Mechanical Systems and Signal Processing,2019,123:554-572.
[4]宋鹏先,李耀华,王平,等.交流电机端口特性的数字化实现方法[J].电工技术学报,2015,30(14):184-192.SONG Pengxian,LI Yaohua,WANG Ping,et al.The digital realization method of AC motor simulator[J].Transactions of China Electrotechnical Society,2015,30(14):184-192.
[5]PONS-LLINARES J,ANTONINO-DAVIU J A,RIERA-GUASPM,et al.Advanced induction motor rotor fault diagnosis via continuous and discrete time-frequency tools[J].IEEETransactions on Industrial Electronics,2015,62(3):1791-1802.
[6]SLATER H J,ATKINSON D J,JACK A G.Real-time emulation for power equipment development.Part 2:the virtual machine[J].IEE Proceedings-Electric Power Applications,1998,145(3):153-158.
[7]RAO Y S,CHANDORKAR M.Rapid prototyping tool for electrical load emulation using power electronic converters[C]//Industrial Electronics&Applications,Kuala Lumpur Malaysia IEEE,2009:106-111.
[8]JACK A G,ATKINSON D J,SLATER H J.Real-time emulation for power equipment development.Part 1:real-time simulation[J].IEE Proceedings-Electric Power Applications,1998,145(2):92-97.
[9]RAO Y S,CHANDORKAR M C.Real-time electrical load emulator using optimal feedback control technique[J].IEEETransactions on Industrial Electronics,2010,57(4):1217-1225.
[10]GRUBIC S,AMLANG B,SCHUMACHER W,et al.Ahigh-performance electronic hardware-in-the-loop drive-load simulation using a linear inverter(LinVerter)[J].IEEETransactions on Industrial Electronics,2010,57(4):1208-1216.
[11]KUMAR K V P,KUMAR T V.Predictive torque control of open-end winding induction motor drive fed with multilevel inversion using two two-level inverters[J].IET Electric Power Applications,2018,12(1):54-62.
[12]陈增强,吴瑕,孙明玮,等.时滞系统的自抗扰广义预测控制的性能分析[J].中南大学学报(自然科学版),2018,49(8):1960-1970.CHEN Zengqiang,WU Xia,SUN Mingwei,et al.Performance analysis of active disturbance rejection generalized predictive control on time-delay systems[J].Journal of Central South University(Science and Technology),2018,49(8):1960-1970.
[13]DAN Hanbing,ZHU Qi,PENG Tao,et al.Preselection algorithm based on predictive control for direct matrix converter[J].IET Electric Power Applications,2017,11(5):768-775.
[14]ELSISI M,SOLIMAN M,ABOELELA M A S,et al.Model predictive control of plug-in hybrid electric vehicles for frequency regulation in a smart grid[J].IET Generation Transmission&Distribution,2017,11(16):3974-3983.
[15]宋文胜,蒋蔚,刘碧,等.单相级联H桥整流器简化模型预测电流控制[J].中国电机工程学报,2019,39(4):1127-1138.SONG Wensheng,JIANG Wei,LIU Bi,et al.Single-phase cascaded H-bridge rectifiers simplified model predictive current control[J].Proceedings of the CSEE,2019,39(4):1127-1138.
[16]郑大勇,张品佳.交流电机定子绝缘故障诊断与在线监测技术综述[J].中国电机工程学报,2019,39(2):395-406.ZHENG Dayong,ZHANG Pinjia.A review of fault diagnosis and online condition monitoring of stator insulation in ACelectrical machine[J].Proceedings of the CSEE,2019,39(2):395-406.
[17]YANG Chunhua,YANG Chao,PENG Tao,et al.A faultinjection strategy for traction drive control systems[J].IEEETransactions on Industrial Electronics,2017,64(7):5719-5727.
[18]BHATTACHARYA S,SHARMA S K,MASCARELLA D,et al.Sub-fundamental cycle switching frequency variation for switching losses reduction of a two-level inverter traction drive[J].IEEE Transactions on Transportation Electrification,2017,3(3):646-655.
[19]SIZOV G Y,SAYED-AHMED A,YEH C C,et al.Analysis and diagnostics of adjacent and nonadjacent broken rotor-bar faults in squirrel-cage induction machines[J].IEEE Transactions on Industrial Electronics,2009,56(11):4627-4641.