Multi-Vector Constant Frequency Model Predictive Fault-Tolerant Control of Bidirectional AC-DC Converter with Leg Fault
Li Yanyan1, Li Guohao1, Deng Yuan2, Li Qiang3,4, Jin Nan1
1. College of Electric and Information Engineering Zhengzhou University of Light Industry Zhengzhou 450002 China; 2. Pinggao Group Co. Ltd Pingdingshan 467001 China; 3. State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University Chongqing 400030 China; 4. State Grid Hennan Electric Power Research Institute Zhengzhou 450002 China
Abstract：Due to the transient impact of surge and spike during operation, the leg switch device fault of AC-DC converter will occur and threaten the reliable operation of converter. In the conventional model predictive fault-tolerant control method, only a single vector is selected to act on the bidirectional AC-DC converter with leg fault in each switching cycle, so the frequency is not fixed. It is difficult to track the target vector accurately, and the current harmonic content and power ripple are large as well. In order to reduce the current harmonics and power ripple in AC-DC converter after bridge arm fault under conventional model predictive fault-tolerant control, a multi-vector model constant frequency predictive fault-tolerant control strategy is proposed in this paper. Firstly, the system topology of bidirectional AC-DC converter with leg fault is reconstructed. Then the operation mechanism of fault-tolerant structure and the relationship of voltage vectors are clarified. Secondly, the power prediction model under fault-tolerant operation mode is established. Multiple voltage vectors are used in each switching cycle. The synthetic vector is used to track the target vector. The switching order of each vector is fixed to form constant switching frequency. Finally, the simulation model and experimental platform are built. The results show that under the proposed control strategy, the bidirectional AC-DC converter can operate fault-tolerant operation after the bridge arm fault, and the output current harmonics and power ripples are reduced. The system has good steady-state and dynamic performance.
李琰琰, 李国昊, 邓渊, 李强, 金楠. 双向交直流变换器桥臂故障多矢量恒频模型预测容错控制[J]. 电工技术学报, 2020, 35(10): 2206-2215.
Li Yanyan, Li Guohao, Deng Yuan, Li Qiang, Jin Nan. Multi-Vector Constant Frequency Model Predictive Fault-Tolerant Control of Bidirectional AC-DC Converter with Leg Fault. Transactions of China Electrotechnical Society, 2020, 35(10): 2206-2215.
[1] 杨新法, 苏剑, 吕志鹏, 等. 微电网技术综述[J]. 中国电机工程学报, 2014, 34(1): 57-70. Yang Xinfa, Su Jian, Lü Zhipeng, et al.Overview on micro-grid technology[J]. Proceedings of the CSEE, 2014, 34(1): 57-70. [2] 吴娟, 沈艳霞. 电力电子功率变换器故障诊断方法综述[J]. 电工电能新技术, 2015, 34(11): 48-54. Wu Juan, Shen Yanxia, Review of fault diagnosis technology for power electronic converters[J]. Advanced Technology of Electrical Engineering and Energy, 2015, 34(11): 48-54. [3] 徐殿国, 刘晓峰, 于泳. 变频器故障诊断及容错控制研究综述[J]. 电工技术学报, 2015, 30(21): 1-12. Xu Dianguo, Liu Xiaofeng, Yu Yong.A survey on fault diagnosis and tolerant control of inverters[J]. Transactions of China Electrotechnical Society, 2015, 30(21): 1-12. [4] 杨国润, 肖飞, 范学鑫, 等. 中压大容量三重化三电平直流变换器冗余容错控制[J]. 电工技术学报, 2017, 32(增刊1): 186-195. Yang Guorun, Xiao Fei, Fan Xuexin, et al.Redundant and fault tolerant control of a medium-voltage high- power three-phase three-level DC-DC converter[J]. Transactions of China Electrotechnical Society, 2017, 32(S1): 186-195. [5] 袁庆伟, 赵荣祥. 三相四开关逆变器供电的IPMSM直接转矩控制系统建模与分析[J]. 电工技术学报, 2017, 32(15): 76-88. Yuan Qingwei, Zhao Rongxiang.Modeling and analysis of the direct torque control system for IPMSM fed by three-phase four-switch inverter[J]. Transactions of China Electrotechnical Society, 2017, 32(15): 76-88. [6] 郭小强, 贺冉, 菅佳敏, 等. 非隔离型三相四桥臂光伏逆变器漏电流抑制研究[J]. 电工技术学报, 2016, 31(19): 66-73. Guo Xiaoqiang, He Ran, Jian Jiamin, et al.Leakage current reduction for three-phase four-leg photo- voltaic inverter[J]. Transactions of China Electro- technical Society, 2016, 31(19): 66-73. [7] 郑玮仪, 曾志勇, 赵荣祥. 容错型三相并网变换器的建模分析与矢量调制[J]. 中国电机工程学报, 2016, 36(8): 2202-2212. Zheng Weiyi, Zeng Zhiyong, Zhao Rongxiang.Modeling and modulation of the fault-tolerant grid- connected three-phase PWM converters[J]. Pro- ceedings of the CSEE, 2016, 36(8): 2202-2212. [8] 刘宏超, 吕胜民, 张春晖. 三相四开关并联型有源电力滤波器的SVPWM调制算法[J]. 电工技术学报, 2011, 26(4): 128-134. Liu Hongchao, Lü Shengmin, Zhang Chunhui.Space vector pulse width modulation of three-phase four-switch shunt active power filter[J]. Transactions of China Electrotechnical Society, 2011, 26(4): 128-134. [9] 王文, 罗安, 黎燕. 三相四开关并联有源电力滤波器的控制方法[J]. 电工技术学报, 2014, 29(10): 183-190. Wang Wen, Luo An, Li Yan.Control method of three-phase four-switch shunt active power filter[J]. Transactions of China Electrotechnical Society, 2014, 29(10): 183-190. [10] Jin Nan, Guo Leilei, Zhao C, et al.Finite states model predictive direct power control for phase leg faults tolerant operation of bidirectional AC/DC con- verter[C]//2018 IEEE Applied Power Electronics Conference and Exposition (APEC), San Antonio, TX, 2018: 2330-2336. [11] 吉宇, 梅军, 杜晓舟, 等. 基于模块化多电平变换器的电流滞环跟踪型并网控制策略[J]. 电工技术学报, 2015, 30(4): 26-34. Ji Yu, Mei Jun, Du Xiaozhou, et al.Hysteresis-band current tracking control strategy to connect modular multilevel converter with power grid[J]. Transactions of China Electrotechnical Society, 2015, 30(4): 26-34. [12] 冯腾, 康龙云, 胡毕华, 等. 基于无差拍控制的T型三电平逆变器中点电位平衡策略[J]. 电工技术学报, 2018, 33(8): 1827-1834. Feng Teng, Kang Longyun, Hu Bihua, et al.A neutral point potential balancing strategy for three-level T-type inverter based on deadbeat control[J]. Transa- ctions of China Electrotechnical Society, 2018, 33(8): 1827-1834. [13] Jin Nan, Hu S, Gan C, et al.Finite states model predictive control for fault-tolerant operation of a three-phase bidirectional AC/DC converter under unbalanced grid voltages[J]. IEEE Transactions on Industrial Electronics, 2018, 65(1): 819-829. [14] 赵克, 安群涛, 孙力, 等. 容错逆变器PMSM无位置传感控制系统[J]. 电机与控制学报, 2010, 14(4): 25-30. Zhao Ke, An Quntao, Sun Li, et al.Fault-tolerant inverter permanent magnet synchronous motor position sensorless control system[J]. Electric Machines and Control, 2010, 14(4): 25-30. [15] 郭磊磊, 金楠, 申永鹏. 一种基于优化电压矢量选择的电压源逆变器模型预测共模电压抑制方法[J]. 电工技术学报, 2018, 33(6): 1347-1355. Guo Leilei, Jin Nan, Shen Yongpeng.A model predictive common-mode voltage suppression method for voltage source inverter based on optimum voltage vector selection[J]. Transactions of China Electro- technical Society, 2018, 33(6): 1347-1355. [16] 金涛, 沈学宇, 苏泰新, 等. 不平衡电网下并网逆变器的模型预测电流限幅灵活控制[J]. 电工技术学报, 2018, 33(11): 1-13. Jin Tao, Shen Xueyu, Su Taixin, et al.Flexible model predictive control with peak current limitation for grid-connected inverter under unbalanced grid voltage[J]. Transactions of China Electrotechnical Society, 2018, 33(11): 1-13. [17] 薛花, 张芮嘉, 胡英俊. PV-FC-BS混合系统全状态模型预测能量管理优化策略[J]. 电力系统保护与控制, 2017, 45(11): 49-58. Xue Hua, Zhang Ruijia, Hu Yingjun.Full-state model predictive energy management optimization for PV- fuel cell-battery hybrid system[J]. Power System Protection and Control, 2017, 45(11): 49-58. [18] 杨勇, 赵方平, 阮毅, 等. 三相并网逆变器模型电流预测控制技术[J]. 电工技术学报, 2011, 26(6): 153-159. Yang Yong, Zhao Fangping, Ruan Yi, et al.Model current predictive control for three-phase grid- connected inverters[J]. Transactions of China Electro- technical Society, 2011, 26(6): 153-159.
2020, Vol. 35 
