多重交错并联开路电路故障检测
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摘要
多重交错并联电路被广泛用于风机、光伏发电、电动汽车等领域。该拓扑结构具有电流波纹小、传输效率高以及功率因数小等优点。但该结构中的支路一旦发生开路故障,系统的性能则严重下降。为有效识别出该电路的开路故障以便进行容错控制,该文提出一种能同时判别出多个故障支路的故障诊断算法,将传统的单相故障检测推广到多相。该算法根据多重交错并联电路的结构特点预测出支路电流,使用最小二乘法对输入电流和预测的支路电流进行求解,可以得到每一相支路的工作状态,从而识别出电路的故障位置。实验以及仿真结果证明了该算法的有效性,以及对噪声的鲁棒性。
Multi-phase interleaved converters is widely used in photo voltaic power generation, electric vehicles, fuel cells and other fields, which have advantages including volume reducing, high conversion efficiency, small current ripple, and lower voltage stress on devices comparing to other topologies.When an open-circuit fault occurs in a branch, there will be a serious decline in system performance. In order to identify the circuit fault in time and employ fault-tolerant strategy, this paper presented a fault diagnosis algorithm that can identify multiple simultaneous faults. The algorithm predicts the phase current according to the structural characteristics of the circuit,and then the least squares method was adopted to determine the operating state of each branch based on the input current and the predicted phase current. Simulations and experiment show that the algorithm is simple and robust to noise.
Multi-phase interleaved converters is widely used in photo voltaic power generation, electric vehicles, fuel cells and other fields, which have advantages including volume reducing, high conversion efficiency, small current ripple, and lower voltage stress on devices comparing to other topologies.When an open-circuit fault occurs in a branch, there will be a serious decline in system performance. In order to identify the circuit fault in time and employ fault-tolerant strategy, this paper presented a fault diagnosis algorithm that can identify multiple simultaneous faults. The algorithm predicts the phase current according to the structural characteristics of the circuit,and then the least squares method was adopted to determine the operating state of each branch based on the input current and the predicted phase current. Simulations and experiment show that the algorithm is simple and robust to noise.
引文
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[18]Pazouki E,De Abreu-Garcia J A,Sozer Y.Fault diagnosis method for DC-DC converters based on the inductor current emulator[C]//Proceedings of 2016 IEEE Energy Conversion Congress and Exposition.Milwaukee,WI:IEEE,2016.
[19]Wang Zhan,Li Hui.An integrated three-port bidirectional DC-DC converter for PV application on a DC distribution system[J].IEEE Transactions on Power Electronics,2013,28(10):4612-4624.
[20]Deng Fujin,Chen Zhe.Control of improved full-bridge three-level DC/DC converter for wind turbines in a DCgrid[J].IEEE Transactions on Power Electronics,2013,28(1):314-324.
[21]Mohan N,Undeland T M,Robbins W P.Power electronics:converters,applications,and design[M].3rd ed.Hoboken,NJ,USA:Wiley,2003:67-68.
[2]Zhang J Z,Sun Tongjing,Wang Fengxiang,et al.Acomputationally efficient quasi-centralized DMPC for back-to-back converter PMSG wind turbine systems without DC-link tracking errors[J].IEEE Transactions on Industrial Electronics,2016,63(10):6160-6171.
[3]Ramos-Paja C A,Petrone G,Spagnuolo G.DCMoperation of interleaved DC/DC converters for PVapplications[C]//Proceedings of 2012 15th International Power Electronics and Motion Control Conference.Novi Sad,Serbia:IEEE,2012.
[4]Kimura S,Imaoka J,Yamamoto M.Downsizing effects of integrated magnetic components in high power density DC-DC converters for EV and HEV[C]//Proceedings of2014 IEEE Energy Conversion Congress and Exposition.Pittsburgh,PA:IEEE,2014.
[5]魏佳丹,周波.双凸极电机全桥变换器单相开路故障容错方案[J].中国电机工程学报,2008,28(24):88-93.Wei Jiadan,Zhou Bo.Project on single phase open-circuit fault tolerance of doubly salient electro-magnet motor driven by full-bridge converter[J].Proceedings of the CSEE,2008,28(24):88-93(in Chinese).
[6]赵品志,杨贵杰,李勇.五相永磁同步电动机单相开路故障的容错控制策略[J].中国电机工程学报,2011,31(24):68-76.Zhao Pinzhi,Yang Guijie,Li Yong.Fault-tolerant control strategy for five-phase permanent magnetic synchronous motor under single phase open-circuit fault condition[J].Proceedings of the CSEE,2011,31(24):68-76(in Chinese).
[7]Jiang Lianlian,Maskell D L.Automatic fault detection and diagnosis for photovoltaic systems using combined artificial neural network and analytical based methods[C]//Proceedings of 2015 International Joint Conference on Neural Networks.Killarney:IEEE,2015.
[8]Sankavaram C,Pattipati B,Pattipati K R,et al.Fault diagnosis in hybrid electric vehicle regenerative braking system[J].IEEE Access,2014,2:1225-1239.
[9]Sankavaram C,Kodali A,Pattipati K R,et al.Incremental classifiers for data-driven fault diagnosis applied to automotive systems[J].IEEE Access,2015,3:407-419.
[10]Chen Yu,Pei Xuejun,Nie Songsong,et al.Monitoring and diagnosis for the DC-DC converter using the magnetic near field waveform[J].IEEE Transactions on Industrial Electronics,2011,58(5):1634-1647.
[11]Martin-Diaz I,Duque-Perez O,Romero-Troncoso R,et al.Supervised diagnosis of induction motor faults:a proposed methodology for an improved performance evaluation[C]//Proceedings of 2015 IEEE 10th International Symposium on Diagnostics for Electrical Machines,Power Electronics and Drives.Guarda,Portugal:IEEE,2015.
[12]任磊,韦徵,龚春英,等.电力电子电路功率器件故障特征参数提取技术综述[J].中国电机工程学报,2015,35(12):3089-3101.Ren Lei,Wei Zheng,Gong Chunying,et al.Fault feature extraction techniques for power devices in power electronic converters:a review[J].Proceedings of the CSEE,2015,35(12):3089-3101(in Chinese).
[13]Guilbert D,Guarisco M,Gaillard A,et al.FPGA based fault-tolerant control on an interleaved DC/DC boost converter for fuel cell electric vehicle applications[J].International Journal of Hydrogen Energy,2015,40(45):15815-15822.
[14]Ribeiro E,Cardoso A J M,Boccaletti C.Open-circuit fault diagnosis in interleaved DC-DC converters[J].IEEETransactions on Power Electronics,2014,29(6):3091-3102.
[15]Park K,Chen Zhe.Open-circuit fault detection and tolerant operation for a parallel-connected SAB DC-DCconverter[C]//Proceedings of 2014 IEEE Applied Power Electronics Conference and Exposition.Fort Worth,TX:IEEE,2014.
[16]Givi H,Farjah E,Ghanbari T.Switch fault diagnosis and capacitor lifetime monitoring technique for DC-DCconverters using a single sensor[J].IET Science,Measurement&Technology,2016,10(5):513-527.
[17]于泳,蒋生成,杨荣峰,等.变频器IGBT开路故障诊断方法[J].中国电机工程学报,2011,31(9):30-35.Yu Yong,Jiang Shengcheng,Yang Rongfeng,et al.IGBTOpen circuit fault diagnosis method for inverter[J].Proceedings of the CSEE,2011,31(9):30-35(in Chinese).
[18]Pazouki E,De Abreu-Garcia J A,Sozer Y.Fault diagnosis method for DC-DC converters based on the inductor current emulator[C]//Proceedings of 2016 IEEE Energy Conversion Congress and Exposition.Milwaukee,WI:IEEE,2016.
[19]Wang Zhan,Li Hui.An integrated three-port bidirectional DC-DC converter for PV application on a DC distribution system[J].IEEE Transactions on Power Electronics,2013,28(10):4612-4624.
[20]Deng Fujin,Chen Zhe.Control of improved full-bridge three-level DC/DC converter for wind turbines in a DCgrid[J].IEEE Transactions on Power Electronics,2013,28(1):314-324.
[21]Mohan N,Undeland T M,Robbins W P.Power electronics:converters,applications,and design[M].3rd ed.Hoboken,NJ,USA:Wiley,2003:67-68.