Abstract:DC voltage balance control strategy is one of important parts in cascaded H-bridge rectifier control. Due to the good performance under certain conditions, proportional pulse compensation strategy for voltage balancing is a typical strategy. However, its balancing effect will be influenced by load current of the rectifier, which is difficult to realize self-adaptation for various load conditions. Therefore, an advanced voltage balance method based on the proportional pulse compensation strategy is proposed in this paper. The load current is introduced into the regulator to obtain good performance under different load conditions. Simulation and experimental results verify the proposed improved strategy.
李响, 郭希铮, 游小杰, 王剑, 龚泽宇, 黄佳佳. 一种改进的级联H桥整流器直流电压平衡策略[J]. 电工技术学报, 2017, 32(4): 66-75.
Li Xiang, Guo Xizheng, You Xiaojie, Wang Jian, Gong Zeyu, Huang Jiajia. An Advanced DC Voltage Balance Strategy for Cascaded H-Bridge Rectifier. Transactions of China Electrotechnical Society, 2017, 32(4): 66-75.
[1] 王奎. 无变压器多电平变换器拓扑及控制算法研究[D]. 北京: 清华大学, 2011. [2] 范声芳. 模块化多电平变换器(MMC)若干关键技术研究[D]. 武汉: 华中科技大学, 2014. [3] 王琛琛, 李永东. 多电平变换器拓扑关系及新型拓扑[J]. 电工技术学报, 2011, 26(1): 92-99. Wang Chenchen, Li Yongdong. Multilevel converter topologies and two novel topologies[J]. Transactions of China Electrotechnical Society, 2011, 26(1): 92-99. [4] 王奎, 郑泽东, 李永东. 一种新型的无变压器级联型多电平变换器拓扑[J]. 电工技术学报, 2011, 26(8): 1-6. Wang Kui, Zheng Zedong, Li Yongdong. A novel transformerless cascaded multilevel converter topology[J]. Transactions of China Electrotechnical Society, 2011, 26(8): 1-6. [5] 王剑. 四象限级联型多电平变换器用PWM整流器高性能控制[D]. 北京: 清华大学, 2009. [6] 胡腾, 许烈, 李永东, 等. 混合电动汽车多电平车载变换器的研究[J]. 电工技术学报, 2015, 30(14): 261-268. Hu Teng, Xu Lie, Li Yongdong, et al. Research of multilevel converters on HEV[J]. Transactions of China Electrotechnical Society, 2015, 30(14): 261-268. [7] Rodriguez J, Bernet S, Wu Bin, et al. Multilevel voltage-source-converter topologies for industrial medium-voltage drives[J]. IEEE Transactions on Industrial Electronics, 2007, 54(6): 2930-2945. [8] Zhao Tiefu, Wang Gangyao, Bhattacharya S, et al. Voltage and power balance control for a cascaded H-bridge converter-based solid-state transformer[J]. IEEE Transactions on Power Electronics, 2013, 28(4): 1523-1532. [9] 林志勇, 江道灼, 周月宾, 等. 基于级联H桥换流器的APF-STATCOM的控制与调制[J]. 电力系统保护与控制, 2014, 42(7): 91-96. Lin Zhiyong, Jiang Daozhuo, Zhou Yuebin, et al. Control and modulation for APF-STATCOM based on cascaded H-bridge converter[J]. Power System Protection and Control, 2014, 42(7): 91-96. [10] Chen Zhong, Xu Yaming, Wang Zhihui, et al. Modulation and control of a high performance hybrid cascade H-bridge seven-level active power filter with star configuration[C]//Applied Power Electronics Conference and Exposition (APEC), 2015: 2141- 2147. [11] 杜少通, 杨擎, 汪山林, 等. 五电平H桥级联型STATCOM脉冲轮换控制策略研究[J]. 电力系统保护与控制, 2014, 42(21): 17-22. Du Shaotong, Yang Qing, Wang Shanlin, et al. Research on pulse rotation control strategy for 5-level cascaded H-bridge STATCOM[J]. Power System Protection and Control, 2014, 42(21): 17-22. [12] 陶兴华, 李永东, 孙敏. 两种H桥级联型整流器控制方法比较与研究[C]//第五届中国高校电力电子与电力传动学术年会论文集, 2011: 1-5. [13] Tao Xinghua, Li Yongdong, Sun Min. A phase- disposition PWM method for DC voltage balance in cascaded H-bridge rectifier[C]//International Con- ference on Electrical Machines and Systems (ICEMS), 2010: 243-248. [14] 武琳. 级联型电力电子变压器控制策略研究[D]. 北京: 北京交通大学, 2014. [15] Dell’Aquila A, Liserre M, Monopoli V G, et al. Overview of PI-based solutions for the control of DC buses of a single-phase H-bridge multilevel active rectifier[J]. IEEE Transactions on Industry Appli- cations, 2008, 44(3): 857-866. [16] Tao Xinghua, Xu Lie, Song Yichao, et al. A trans- formerless cascaded AC-DC-AC converter for multi- phase propulsion drive application[C]//International Conference on Electrical Machines and Systems (ICEMS), 2011: 1-5. [17] 姚钢, 方瑞丰, 李东东, 等. 链式静止同步补偿器的直流电容电压平衡控制策略[J]. 电力系统保护与控制, 2015, 43(18): 23-30. Yao Gang, Fang Ruifeng, Li Dongdong, et al. DC capacitor voltage balancing control of cascaded static synchronous compensator[J]. Power System Pro- tection and Control, 2015, 43(18): 23-30.