基于电流预测的矩阵变换器过流保护策略研究
|
摘要
针对矩阵变换器在实际运行中出现负载电机过载导致过电流的问题,提出了一种基于电流预测的过流保护策略。该策略利用变换器系统的离散时间模型来预测由矩阵变换器生成的所有27个可能的输出电压矢量的输出电流的未来值。然后通过将预测的输出电流未来值与保护阈值电流相比较,当预测电流值大于保护阈值电流时,系统会立即向控制器发送过电流报警信号来控制变换器开关器件的关断,进而保护功率开关器件与负载电机免受故障的损害。最后通过Matlab/Simulink仿真与实验,证实了这种过流保护策略的有效性。
Considering the problem of overcurrent caused by load motor overload during actual operation of matrix converter, an overcurrent protection strategy based on current prediction is proposed in this paper. The strategy uses the discrete-time model of matrix converter system to predict future values of the output currents for all the 27 possible output voltage vectors generated by matrix converter. Then, comparing the predicted future output current with the protection threshold current, the system will immediately send an overcurrent alarm signal to the controller to control the switch off of matrix converter switch device when the predicted current value is greater than the protection threshold current. And it protects the power switch device and the load motor from the damage of the fault. Finally, the effectiveness of this overcurrent protection strategy is verified by Matlab/Simulink simulation and experiment.
Considering the problem of overcurrent caused by load motor overload during actual operation of matrix converter, an overcurrent protection strategy based on current prediction is proposed in this paper. The strategy uses the discrete-time model of matrix converter system to predict future values of the output currents for all the 27 possible output voltage vectors generated by matrix converter. Then, comparing the predicted future output current with the protection threshold current, the system will immediately send an overcurrent alarm signal to the controller to control the switch off of matrix converter switch device when the predicted current value is greater than the protection threshold current. And it protects the power switch device and the load motor from the damage of the fault. Finally, the effectiveness of this overcurrent protection strategy is verified by Matlab/Simulink simulation and experiment.
引文
[1]WANG L,GAO H,ZOU G.Modeling methodology and fault simulation of distribution networks integrated with inverter-based DG[J].Protection and Control of Modern Power Systems,2017,2(2):370-378.DOI:10.1186/s41601-017-0058-9.
[2]邓文浪,唐亚辉,李彬艳,等.TSMC功率开关故障诊断优化[J].电力自动化设备,2017,37(5):7-13.DENG Wenlang,TANG Yahui,LI Binyan,et al.Optimization of TSMC power-switch fault diagnosis[J].Electric Power Automation Equipment,2017,37(5):7-13.
[3]王莉娜,黄立培.矩阵式变换器-异步电机系统的故障保护及容错运行方式[J].电工技术学报,2006,21(12):66-70.WANG Lina,HUANG Lipei.Fault protection and fault-tolerant operation method for matrix converterinduction motor system[J].Transactions of China Electrotechnical Society,2006,21(12):66-70.
[4]AUGDAHL B W,HESS H L,JOHNSON B K.Output protection strategies for matrix converters in distributed generation applications[C]//Conference Record of the2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting,October 8-12,2006,Tampa,FL,USA:2082-2089.
[5]夏长亮,阎彦.矩阵变换器-永磁同步电机系统[J].电工技术学报,2015,30(23):1-9.XIA Changliang,YAN Yan.Matrix converter-permanent magnet synchronous motor drives[J].Transactions of China Electrotechnical Society,2015,30(23):1-9.
[6]RAHMAN M H,XU L,YAO L.Protection of large partitioned MTDC networks using DC-DC converters and circuit breakers[J].Protection and Control of Modern Power Systems,2016,1(1):170-178.DOI:10.1186/s41601-016-0030-0.
[7]李勇,郭勇,皇甫星星,等.T型三电平逆变器的中点平衡建模与控制[J].电力工程技术,2017,36(2):61-65.LI Yong,GUO Yong,HUANGFU Xingxing,et al.Modeling and control of neutral point voltage balancing for T-Type three-level inverters[J].Jiangsu Electrical Engineering,2017,36(2):61-65.
[8]李文琢,房建成,李海涛.基于Buck变换器调压的无刷直流电机功率变换器单管开路故障诊断[J].中国电机工程学报,2013,33(15):124-132.LI Wenzhuo,FANG Jiancheng,LI Haitao.Single switch open-circuit fault diagnosis in brushless DC motor drivers with buck converters[J].Proceedings of the CSEE,2013,33(15):124-132.
[9]周宁,雷响,荆骁睿,等.一种含高渗透率分布式电源配电网自适应过电流保护方案[J].电力系统保护与控制,2016,44(22):24-31.ZHOU Ning,LEI Xiang,JING Xiaorui,et al.Adaptive over-current protection scheme for distribution network with high penetration rate of DG[J].Power System Protection and Control,2016,44(22):24-31.
[10]韩娜,周波,秦显慧,等.全双向开关型双级矩阵变换器逆变级容错策略[J].中国电机工程学报,2017,37(15):4454-4462.HAN Na,ZHOU Bo,QIN Xianhui,et al.Fault-tolerant strategy for inverter stage of full bidirectional switches two stage matrix converter[J].Proceedings of the CSEE,2017,37(15):4454-4462.
[11]WANG Lina,XU Fuyuan,SUN Kai,et al.A novel safe shutdown strategy for matrix converter even under fault condition[C]//Twentieth Annual IEEE Applied Power Electronics Conference and Exposition,APEC 2005,March 6-10,2005,Austin,TX,USA:1786-1790.
[12]马星河,张少辉,李自强,等.一种用于矩阵变换器的简化非线性自抗扰控制策略[J].电力系统保护与控制,2018,46(10):48-60.MA Xinghe,ZHANG Shaohui,LI Ziqiang,et al.Asimplified nonlinear auto disturbance rejection control strategy for matrix converter[J].Power System Protection and Control,2018,46(10):48-60.
[13]郭有贵,黄松涛,王震,等.矩阵变换器直接转矩控制系统的电网故障跨越能力[J].电工技术学报,2017,32(16):203-211.GUO Yougui,HUANG Songtao,WANG Zhen,et al.Crossing ability of grid faults for matrix converter direct torque control system[J].Transactions of China Electrotechnical Society,2017,32(16):203-211.
[14]王振浩,刘宇男,张明江,等.基于双向DC/AC变换器的混合储能系统动态控制策略[J].电力系统保护与控制,2017,45(3):26-32.WANG Zhenhao,LIU Yunan,ZHANG Mingjiang,et al.Dynamic control strategy for hybrid energy storage system based on bi-directional DC/AC converters[J].Power System Protection and Control,2017,45(3):26-32.
[15]曹言敬,何凤有,张旭隆.一种新颖的矩阵变换器过流保护策略[J].电机与控制应用,2009,36(3):43-45.CAO Yanjing,HE Fengyou,ZHANG Xulong.A new over-current protection strategy for matrix converter[J].Electric Machines&Control Application,2009,36(3):43-45.
[16]陈磊,季亮,杨兴武,等.LCL型并网逆变器新型频率自适应重复控制方法[J].电力系统保护与控制,2017,45(23):57-64.CHEN Lei,JI Liang,YANG Xingwu,et al.A new frequency adaptive repetitive control approach for gridconnected inverter with LCL filter[J].Power System Protection and Control,2017,45(23):57-64.
[17]吴小兰,谭国俊,马星河,等.基于d SPACE的矩阵变换器电流控制策略实现[J].系统仿真学报,2007,19(13):3014-3017.WU Xiaolan,TAN Guojun,MA Xinghe,et al.Implementation of matrix converter current control strategies based on dSPACE[J].Journal of System Simulation,2007,19(13):3014-3017.
[18]MAHLEIN J,BRUCKMANN M,BRAUN M.Passive protection strategy for a drive system with a matrix converter and an induction machine[J].IEEE Transactions on Industrial Electronics,2002,49(2):297-303.
[19]ANDREU J,DIEGO J M D,ALEGRIA I M D,et al.New protection circuit for high-speed switching and start-up of a practical matrix converter[J].IEEE Transactions on Industrial Electronics,2008,55(8):3100-3114.
[20]闫朝阳,郑倩男,吴晓雨,等.直接变换式三相-单相矩阵变换器的电流型解结耦矢量调制策略[J].中国电机工程学报,2016,36(增刊1):170-178.YAN Zhaoyang,ZHENG Qiannan,WU Xiaoyu,et al.Current type de-re-coupling vector modulation strategy of direct transformation three-phase to single-phase matrix converter[J].Proceedings of the CSEE,2016,36(S1):170-178.
[21]李遥,许烈,李永东.模块化多电平矩阵变换器开关次数最优的拓扑连接策略[J].电工技术学报,2018,33(2):342-352.LI Yao,XU Lie,LI Yongdong.Topology connecting strategy of the modular multilevel matrix converter for optimal switching times[J].Transactions of China Electrotechnical Society,2018,33(2):342-352.
[22]GAMBOA P,PINTO S F,SILVA J F,et al.Predictive optimal control of input and output currents in matrix converters[C]//2007 International Conference on Power Engineering,Energy and Electrical Drives,April 12-14,2007,Setubal,Portugal:529-533.
[23]IRODI A K,SRINIVAS N R.Active overcurrent protection schemes in bridge inverters operating under shoot-through conditions[C]//2015 International Conference on Power,Instrumentation,Control and Computing(PICC),December9-11,2015,Thrissur,India:1-5.
[24]TARISCIOTTI L,LEI J,FORMENTINI A,et al.Modulated predictive control for indirect matrix converter[J].IEEE Transactions on Industry Applications,2017,53(5):4644-4654.
[2]邓文浪,唐亚辉,李彬艳,等.TSMC功率开关故障诊断优化[J].电力自动化设备,2017,37(5):7-13.DENG Wenlang,TANG Yahui,LI Binyan,et al.Optimization of TSMC power-switch fault diagnosis[J].Electric Power Automation Equipment,2017,37(5):7-13.
[3]王莉娜,黄立培.矩阵式变换器-异步电机系统的故障保护及容错运行方式[J].电工技术学报,2006,21(12):66-70.WANG Lina,HUANG Lipei.Fault protection and fault-tolerant operation method for matrix converterinduction motor system[J].Transactions of China Electrotechnical Society,2006,21(12):66-70.
[4]AUGDAHL B W,HESS H L,JOHNSON B K.Output protection strategies for matrix converters in distributed generation applications[C]//Conference Record of the2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting,October 8-12,2006,Tampa,FL,USA:2082-2089.
[5]夏长亮,阎彦.矩阵变换器-永磁同步电机系统[J].电工技术学报,2015,30(23):1-9.XIA Changliang,YAN Yan.Matrix converter-permanent magnet synchronous motor drives[J].Transactions of China Electrotechnical Society,2015,30(23):1-9.
[6]RAHMAN M H,XU L,YAO L.Protection of large partitioned MTDC networks using DC-DC converters and circuit breakers[J].Protection and Control of Modern Power Systems,2016,1(1):170-178.DOI:10.1186/s41601-016-0030-0.
[7]李勇,郭勇,皇甫星星,等.T型三电平逆变器的中点平衡建模与控制[J].电力工程技术,2017,36(2):61-65.LI Yong,GUO Yong,HUANGFU Xingxing,et al.Modeling and control of neutral point voltage balancing for T-Type three-level inverters[J].Jiangsu Electrical Engineering,2017,36(2):61-65.
[8]李文琢,房建成,李海涛.基于Buck变换器调压的无刷直流电机功率变换器单管开路故障诊断[J].中国电机工程学报,2013,33(15):124-132.LI Wenzhuo,FANG Jiancheng,LI Haitao.Single switch open-circuit fault diagnosis in brushless DC motor drivers with buck converters[J].Proceedings of the CSEE,2013,33(15):124-132.
[9]周宁,雷响,荆骁睿,等.一种含高渗透率分布式电源配电网自适应过电流保护方案[J].电力系统保护与控制,2016,44(22):24-31.ZHOU Ning,LEI Xiang,JING Xiaorui,et al.Adaptive over-current protection scheme for distribution network with high penetration rate of DG[J].Power System Protection and Control,2016,44(22):24-31.
[10]韩娜,周波,秦显慧,等.全双向开关型双级矩阵变换器逆变级容错策略[J].中国电机工程学报,2017,37(15):4454-4462.HAN Na,ZHOU Bo,QIN Xianhui,et al.Fault-tolerant strategy for inverter stage of full bidirectional switches two stage matrix converter[J].Proceedings of the CSEE,2017,37(15):4454-4462.
[11]WANG Lina,XU Fuyuan,SUN Kai,et al.A novel safe shutdown strategy for matrix converter even under fault condition[C]//Twentieth Annual IEEE Applied Power Electronics Conference and Exposition,APEC 2005,March 6-10,2005,Austin,TX,USA:1786-1790.
[12]马星河,张少辉,李自强,等.一种用于矩阵变换器的简化非线性自抗扰控制策略[J].电力系统保护与控制,2018,46(10):48-60.MA Xinghe,ZHANG Shaohui,LI Ziqiang,et al.Asimplified nonlinear auto disturbance rejection control strategy for matrix converter[J].Power System Protection and Control,2018,46(10):48-60.
[13]郭有贵,黄松涛,王震,等.矩阵变换器直接转矩控制系统的电网故障跨越能力[J].电工技术学报,2017,32(16):203-211.GUO Yougui,HUANG Songtao,WANG Zhen,et al.Crossing ability of grid faults for matrix converter direct torque control system[J].Transactions of China Electrotechnical Society,2017,32(16):203-211.
[14]王振浩,刘宇男,张明江,等.基于双向DC/AC变换器的混合储能系统动态控制策略[J].电力系统保护与控制,2017,45(3):26-32.WANG Zhenhao,LIU Yunan,ZHANG Mingjiang,et al.Dynamic control strategy for hybrid energy storage system based on bi-directional DC/AC converters[J].Power System Protection and Control,2017,45(3):26-32.
[15]曹言敬,何凤有,张旭隆.一种新颖的矩阵变换器过流保护策略[J].电机与控制应用,2009,36(3):43-45.CAO Yanjing,HE Fengyou,ZHANG Xulong.A new over-current protection strategy for matrix converter[J].Electric Machines&Control Application,2009,36(3):43-45.
[16]陈磊,季亮,杨兴武,等.LCL型并网逆变器新型频率自适应重复控制方法[J].电力系统保护与控制,2017,45(23):57-64.CHEN Lei,JI Liang,YANG Xingwu,et al.A new frequency adaptive repetitive control approach for gridconnected inverter with LCL filter[J].Power System Protection and Control,2017,45(23):57-64.
[17]吴小兰,谭国俊,马星河,等.基于d SPACE的矩阵变换器电流控制策略实现[J].系统仿真学报,2007,19(13):3014-3017.WU Xiaolan,TAN Guojun,MA Xinghe,et al.Implementation of matrix converter current control strategies based on dSPACE[J].Journal of System Simulation,2007,19(13):3014-3017.
[18]MAHLEIN J,BRUCKMANN M,BRAUN M.Passive protection strategy for a drive system with a matrix converter and an induction machine[J].IEEE Transactions on Industrial Electronics,2002,49(2):297-303.
[19]ANDREU J,DIEGO J M D,ALEGRIA I M D,et al.New protection circuit for high-speed switching and start-up of a practical matrix converter[J].IEEE Transactions on Industrial Electronics,2008,55(8):3100-3114.
[20]闫朝阳,郑倩男,吴晓雨,等.直接变换式三相-单相矩阵变换器的电流型解结耦矢量调制策略[J].中国电机工程学报,2016,36(增刊1):170-178.YAN Zhaoyang,ZHENG Qiannan,WU Xiaoyu,et al.Current type de-re-coupling vector modulation strategy of direct transformation three-phase to single-phase matrix converter[J].Proceedings of the CSEE,2016,36(S1):170-178.
[21]李遥,许烈,李永东.模块化多电平矩阵变换器开关次数最优的拓扑连接策略[J].电工技术学报,2018,33(2):342-352.LI Yao,XU Lie,LI Yongdong.Topology connecting strategy of the modular multilevel matrix converter for optimal switching times[J].Transactions of China Electrotechnical Society,2018,33(2):342-352.
[22]GAMBOA P,PINTO S F,SILVA J F,et al.Predictive optimal control of input and output currents in matrix converters[C]//2007 International Conference on Power Engineering,Energy and Electrical Drives,April 12-14,2007,Setubal,Portugal:529-533.
[23]IRODI A K,SRINIVAS N R.Active overcurrent protection schemes in bridge inverters operating under shoot-through conditions[C]//2015 International Conference on Power,Instrumentation,Control and Computing(PICC),December9-11,2015,Thrissur,India:1-5.
[24]TARISCIOTTI L,LEI J,FORMENTINI A,et al.Modulated predictive control for indirect matrix converter[J].IEEE Transactions on Industry Applications,2017,53(5):4644-4654.