Abstract：For the eight-switch three-phase inverter (ESTPI), this paper proposes a predictive current control method without weighting factors to suppress DC-link capacitor voltage fluctuation. First, on the basis of the neutral-point-clamped (NPC) three-level inverter, it analyses the topology and mathematical model of ESTPI. And at the same time it analyses the cause of the capacitor voltage fluctuation and establishes the mathematical model. Then, it uses the mathematical model of inductive load to predict the current. For the stability of the system after fault-tolerant control, the cost function of conventional model predictive control method is set up to supress the fluctuation and control the current. In order to eliminate the weighting factor, the cost function without weighting factors is analyses and proposed. Taking into account of application in practice, the delay is compensated. On the foundation of the conventional model of predictive control and mathematical model referred above, the new model of the proposed method is established. Finally, the proposed control algorithm is verified by the simulation.
成庶, 欧阳泽铿, 张璐琳, 李卓鑫, 向超群. 无权重系数的三相八开关模型预测电流控制[J]. 电工技术学报, 2021, 36(zk1): 265-273.
Cheng Shu, Ouyang Zekeng, Zhang Lulin, Li Zhuoxin, Xiang Chaoqun. A Model Predictive Current Control Method Without Weighting Factors for Eight-Switch Three-Phase Inverter. Transactions of China Electrotechnical Society, 2021, 36(zk1): 265-273.
[1] 张斌, 许伟奇, 戴乾军. 三相八开关容错逆变器的PMSM驱动系统FCS-MPC策略[J]. 电机与控制学报, 2019, 23(6): 81-92. Zhang Bin, Xu Weiqi, Dai Qianjun.Finite control set model predictive control for PMSM systems driven by three-phase eight-switch fault-tolerant inverter[J]. Electric Machines and Control, 2019, 23(6): 81-92. [2] 唐启迪, 葛兴来, 刘勇超, 等. 三相八开关逆变器-感应电机传动系统直接转矩控制算法[J]. 电工技术学报, 2018, 33(6): 1293-1301. Tang Qidi, Ge Xinglai, Liu Yongchao, et al.Direct torque control algorithm for eight-switch three-phase inverter-fed induction motor drives[J]. Transactions of China Electrotechnical Society, 2018, 33(6): 1293-1301. [3] 高瞻, 葛琼璇, 李耀华, 等. 一种基于载波实现的三电平中点钳位变流器零矢量首发SVPWM方法[J]. 电工技术学报, 2020, 35(10): 2194-2205. Gao Zhan, Ge Qiongxuan, Li Yaohua, et al.A carrier-based SVPWM begins with the zero voltage vector for three-level neutral point clamped con- verter[J]. Transactions of China Electrotechnical Society, 2020, 35(10): 2194-2205. [4] 张铭, 郭源博, 李泽, 等. 容错控制模式下三电平逆变器输出电压不平衡抑制方法[J]. 电工技术学报, 2018, 33(22): 5300-5310. Zhang Ming, Guo Yuanbo, Li Ze, et al.Suppression algorithm for output voltage unbalance of three-level inverters under fault tolerant operation[J]. Transa- ctions of China Electrotechnical Society, 2018, 33(22): 5300-5310. [5] 郭磊磊, 金楠, 李琰琰, 等. 电压源逆变器虚拟矢量模型预测共模电压抑制方法[J]. 电工技术学报, 2020, 35(4): 839-849. Guo Leilei, Jin Nan, Li Yanyan, et al.Virtual vector based model predictive common-mode voltage redu- ction method for voltage source inverter[J]. Transa- ctions of China Electrotechnical Society, 2020, 35(4): 839-849. [6] Ma Mingyao, Yuan Kexiang, Yang Qingqing, et al.Open-circuit fault-tolerant control strategy based on five-level power converter for SRM system[J]. CES Transactions on Electrical Machines and Systems, 2019, 3(2): 178-186. [7] 於锋, 朱晨光, 吴晓新, 等. 基于矢量分区的永磁同步电机三电平双矢量模型预测磁链控制[J]. 电工技术学报, 2020, 35(10): 2130-2140. Yu Feng, Zhu Chenguang, Wu Xiaoxin, et al.Two- vector-based model predictive flux control of three- level based permanent magnet synchronous motor with sector subregion[J]. Transactions of China Electrotechnical Society, 2020, 35(10): 2130-2140. [8] 王祯, 尹项根, 陈玉, 等. 基于连续控制集模型预测控制的MMC桥臂电流控制策略[J]. 电力系统自动化, 2020, 44(10): 85-94. Wang Zhen, Yin Xianggen, Chen Yu, et al.Arm current control strategy of modular multilevel con- verter based on continuous control set model predictive control[J]. Automation of Electric Power Systems, 2020, 44(10): 85-94. [9] 梅杨, 易高. 间接矩阵变换器-异步电机调速系统模型预测控制权重系数自整定方法[J]. 电工技术学报, 2020, 35(18): 3938-3948. Mei Yang, Yi Gao.A weighting factor self-tuning method in model prediction control for indirect matrix converter with induction motor system[J]. Transactions of China Electrotechnical Society, 2020, 35(18): 3938-3948. [10] 张斌, 杨来宝, 刘鑫, 等. 三相八开关容错逆变器驱动PMSM系统模型预测直接转矩控制[J]. 太阳能学报, 2019, 40(4): 1076-1084. Zhang Bin, Yang Laibao, Liu Xin, et al.Model predictive torque control of PMSM system driven by three phase eight fault-tolerant inverter[J]. Acta Energiae Solaris Sinica, 2019, 40(4): 1076-1084. [11] Liu Yongchao, Laghrouche S, N'Diaye A, et al. Model predictive current and capacitor voltage control of post-fault three-level NPC inverter-fed synchronous reluctance motor drives[C]//2019 Inter- national Aegean Conference on Electrical Machines and Power Electronics (ACEMP) & 2019 Inter- national Conference on Optimization of Electrical and Electronic Equipment (OPTIM), Istanbul, Turkey, 2019: 221-226. [12] Cortes P, Kouro S, Rocca B L, et al.Guidelines for weighting factors design in model predictive control of power converters and drives[C]//2009 IEEE International Conference on Industrial Technology, Gippsland, VIC, 2009: 1-7. [13] Norambuena M, Rodriguez J, Zhang Zhenbin, et al.A very simple strategy for high-quality performance of AC machines using model predictive control[J]. IEEE Transactions on Power Electronics, 2019, 34(1): 794-800. [14] Garcia C, Rodriguez J, Norambuena M, et al.Performance evaluation between SMPTC and PTC for PMSM drives[C]//2019 10th International Con- ference on Power Electronics and ECCE Asia (ICPE 2019-ECCE Asia), Busan, Korea (South), 2019: 1-5. [15] Rojas C A, Rodriguez J, Villarroel F, et al.Predictive torque and flux control without weighting factors[J]. IEEE Transactions on Industrial Electronics, 2013, 60(2): 681-690. [16] Xie Zhen, Guo Leilei, Wang Lingxiang, et al.Simplified model predictive direct torque control method without weighting factors for permanent magnet synchronous generator-based wind power system[J]. IET Electric Power Applications, 2017, 11(5): 793-804. [17] Muddineni V P, Sandepudi S R, Bonala A K.Simplified finite control set model predictive control for induction motor drive without weighting factors[C]// 2016 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), Trivandrum, India, 2016: 1-6. [18] Zhang Xiaoguang, He Yikang, Li Yi, et al.Double vector model predictive direct speed control without weighting factor[C]//2018 21st International Con- ference on Electrical Machines and Systems (ICEMS), Jeju, Korea (South), 2018: 1446-1449.
2021, Vol. 36 
