Abstract：In a DC microgrid system with distributed power, factors such as distributed power output fluctuations and load mutations will cause fluctuations in the DC bus voltage. In order to improve the output performance of the system and further improve the rapidity of the system, the predictive current control method for bidirectional DC-DC converter based on optimal operating time of vector is proposed in this paper. The predictive current controller is used to replace the traditional current loop PI controller and modulation part, which improves the rapidity of the system effectively. In order to solve the problem of large current ripple caused by the inconstant switching frequency in the traditional predictive current control method, an improved control method is proposed. A new objective function is designed to achieve constant frequency control based on the vector action time calculated online. The simulation and experimental results show that the battery current ripples and the DC bus voltage fluctuations are suppressed effectively by the predictive current control method of photovoltaic energy storage bidirectional DC-DC converter based on optimal operating time of vector, and the disturbance rejection capability of the system can be enhanced by the method proposed in this paper.
杨惠, 晁凯悦, 孙向东, 张琦, 骆姗. 基于矢量作用时间的双向DC-DC变换测电流控制方法[J]. 电工技术学报, 2020, 35(zk1): 70-80.
Yang Hui, Chao Kaiyue, Sun Xiangdong, Zhang Qi, Luo Shan. Predictive Current Control Method for Bidirectional DC-DC Converter Based on Optimal Operating Time of Vector. Transactions of China Electrotechnical Society, 2020, 35(zk1): 70-80.
[1] 张继红, 王洪明, 魏毅立, 等. 含复合储能和燃气轮发电机的直流微电网母线电压波动分层控制策略[J]. 电工技术学报, 2018, 33(6): 1238-1246. Zhang Jihong, Wang Hongming, Wei Yili, et al.Hierarchical control strategy of voltage fluctuation in DC microgrid consisting gas-turbine generator and composite energy storage[J]. Transactions of China Electrotechnical Society, 2018, 33(6): 1238-1246. [2] 季宇, 王东旭, 吴红斌, 等. 提高直流微电网稳定性的有源阻尼方法[J]. 电工技术学报, 2018, 33(2): 370-379. Ji Yu, Wang Dongxu, Wu Hongbin, et al.The active damping method for improving the stability of DC microgrid[J]. Transactions of China Electrotechnical Society, 2018, 33(2): 370-379. [3] 王成山, 李微, 王议锋, 等. 直流微电网母线电压波动分类及抑制方法综述[J]. 中国电机工程学报, 2017, 37(1): 84-98. Wang Chengshan, Li Wei, Wang Yifeng, et al.DC bus voltage fluctuation classification and restraint methods review for DC microgrid[J]. Proceedings of the CSEE, 2017, 37(1): 84-98. [4] Cornea O, Andreescu G D, Muntean N, et al.Bidirectional power flow control in a dc microgrid through a switched-capacitor cell hybrid DC-DC converter[J]. IEEE Transactions on Industrial Elec- tronics, 2017, 64(4): 3012-3022. [5] 刘教民, 孙玉巍, 付超, 等. 基于电力电子变压器的电池储能并网系统及其自抗扰控制[J]. 高电压技术, 2017, 43(1): 131-139. Liu Jiaomin, Sun Yuwei, Fu Chao, et al.Battery energy storage system based on power electronic transformer and its ADRC control strategy[J]. High Voltage Engineering, 2017, 43(1): 131-139. [6] 黄炼, 王朴, 武建文, 等. 分布式光-储发电系统的双向DC-DC非线性控制[J]. 电工技术学报, 2016, 31(2): 10-18. Huang Lian, Wang Pu, Wu Jianwen, et al.Nonlinear control of bi-directional DC-DC converter in distributed photovoltaic energy storage system[J]. Transactions of China Electrotechnical Society, 2016, 31(2): 10-18. [7] 李轩, 李永丽, 常晓勇. 基于精确线性化理论的超级电容储能系统的非线性控制算法[J]. 电工技术学报, 2016, 31(21): 12-20. Li Xuan, Li Yongli, Chang Xiaoyong.Nonlinear control algorithm for super capacitor energy storage system based on exact linearization theory[J]. Transactions of China Electrotechnical Society, 2016, 31(21): 12-20. [8] Thang T V, Ashraf Ahmed, Chan-in Kim, et al. Flexible system architecture of stand-alone PV power generation with energy storage device[J]. IEEE Transaction on Energy Conversation, 2015, 30(4): 1386-1396. [9] 柳志飞, 杜贵平, 杜发达. 有限集模型预测控制在电力电子系统中的研究现状和发展趋势[J]. 电工技术学报, 2017, 32(22): 58-69. Liu Zhifei, Du Guiping, Du Fada.Research status and development trend of finite control set model predictive control in power electronics[J]. Transa- ctions of China Electrotechnical Society, 2017, 32(22): 58-69. [10] Wang F, Mei X, Rodriguez J, et al.Model predictive control for electrical drive systems-an overview[J]. CES Transactions on Electrical Machines and Systems, 2017, 1(3): 219-230. [11] Errouissi R, Al-Durra A, Muyeen S M.A robust continuous-time MPC of a DC-DC Boost converter interfaced with a grid-connected photovoltaic system[J]. IEEE Journal of Photovoltaics, 2016, 6(6): 1619-1629. [12] Jin Nan, Hu Shiyang, Gan Chun, 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. [13] Jiang Yujie, Xu Wei, Mu Chaoxu, et al.Improved deadbeat predictive current control combined sliding mode strategy for PMSM drive system[J]. IEEE Transactions on Vehicular Technology, 2018, 67(1): 251-263. [14] Mynar Z, Vesely L, Vaclavek P.PMSM model predictive control with field-weakening implement- ation[J]. IEEE Transactions on Industrial Electronics, 2016, 63(8): 5156-5166. [15] 苗磊, 张勇军, 童朝南, 等. 基于模型预测直接转矩控制的永磁同步发电机效率优化研究[J]. 电工技术学报, 2018, 33(15): 3535-3546. Miao Lei, Zhang Yongjun, Tong Chaonan, et al.Efficiency optimization of permanent magnet synchronous generators based on model predictive direct torque control[J]. Transactions of China Electrotechnical Society, 2018, 33(15): 3535-3546. [16] 史婷娜, 张维, 肖萌, 等. 基于矢量作用时间的永磁同步电机预测电流控制[J]. 电工技术学报, 2017, 32(19): 1-10. Shi Tingna, Zhang Wei, Xiao Meng, et al.Predictive current control for permanent magnet synchronous motor based on operating time of vector[J]. Transa- ctions of China Electrotechnical Society, 2017, 32(19): 1-10. [17] Nademi H, Burgos R, Soghomonian Z.Power quality characteristics of a multilevel current source with optimal predictive scheme from more-electric-aircraft perspective[J]. IEEE Transactions on Vehicular Technology, 2018, 67(1): 160-170. [18] Hartley E N, Jerez J L, Suardi A, et al.Constantinides predictive control using an FPGA with application to aircraft control[J]. IEEE Transactions on Control Systems Technology, 2014, 22(3): 1006-1017. [19] Saeed J, Hasan A.Unit prediction horizon binary search-based model predictive control of full-bridge DC-DC converter[J]. IEEE Transactions on Control Systems Technology, 2018, 26(2): 463-474. [20] 梅杨, 陈丽莎, 黄伟超, 等. 级联式双向DC-DC变换器的优化控制方法[J]. 电工技术学报, 2017, 32(19): 153-159. Mei Yang, Chen Lisha, Huang Weichao, et al.Optimized control method of cascaded bi-directional DC-DC converters[J]. Transactions of China Electro- technical Society, 2017, 32(19): 153-159. [21] Wei Qiang, Wu Bin, Xu Dewei, et al.Model predictive control of capacitor voltage balancing for cascaded modular DC-DC converters[J]. IEEE Transactions on Power Electronics, 2017, 32(1): 752-761.
2020, Vol. 35 
