Abstract：In this paper, a voltage balance control strategy based on dual active bridge (DAB) DC/DC converters in a power electronic traction transformer (PETT) is proposed. The operation mechanism of this strategy is analyzed and a PETT starting control method is proposed. In order to design the output voltage controller and input voltage balance controller conveniently and effectively, the mathematical models are set up, including the model of a single DAB converter, the overall model of the parallel DAB converters related to output voltage control loop, and the model of the parallel DAB converters related to input voltage balance control loop. The simulation and experiment are based on a two-cell low-voltage PETT prototype. The experimental results are consistent with the simulation results, including the steady-state and dynamic performance. Simulation results and experiment results all verify the effectiveness and correctness of the proposed algorithms.
杨景熙, 刘建强, 张捷频, 郑琼林. 基于双有源桥式DC-DC变换器的电力电子 牵引变压器的电压平衡控制[J]. 电工技术学报, 2016, 31(增刊): 119-127.
Yang Jingxi, Liu Jianqiang, Zhang Jiepin, Zheng Qionglin. Voltage Balance Control of a Power Electronic Traction Transformer Based on Dual Active Bridge DC-DC Converters. Transactions of China Electrotechnical Society, 2016, 31(增刊): 119-127.
[1] 孙帮成, 李明高, 安超, 等. 高速列车节能降耗关键技术研究[J]. 中国工程科学, 2015, 17(4): 69-82. Sun Bangcheng, Li Minggao, An Chao, et al. Research on key technology of high-speed train energy consumption[J]. Engineering Sciences, 2015, 17(4): 69-82. [2] 王竟飞. 电力电子牵引变压器[D]. 北京: 北京交通大学, 2015. [3] 刘建强, 魏远乐, 胡辉. 高速列车节能运行优化控制方法研究[J]. 铁道学报, 2014, 36(10): 7-12. Liu Jianqiang, Wei Yuanle, Hu Hui. Research on optimization control method of energy-saving operation of high-speed trains[J]. Journal of the China Railway Society, 2014, 36(10): 7-12. [4] Glinka M, Marquardt R. A new AC/AC multilevel converter family[J]. IEEE Transactions on Industrial Electronics, 2005, 52(3): 662-669. [5] 郑泽东, 顾春阳, 李永东, 等. 采用多绕组高频变压器的新型多电平变换器拓扑及控制策略[J]. 电工技术学报, 2014, 29(10): 12-18. Zheng Zedong, Gu Chunyang, Li Yongdong, et al. Topology and control method of a novel multi-level converter with multi-winding high-frequency trans- former[J]. Transactions of China Electrotechnical Society, 2014, 29(10): 12-18. [6] 顾春阳, 李永东, 郑泽东, 等. 多绕组高频变压器隔离式多电平变换器研究[J]. 电工技术学报, 2014, 29(8): 97-102. Gu Chunyang, Li Yongdong, Zheng Zedong, et al. Research on a high frequency multi-winding trans- former isolated multilevel converter[J]. Transactions of China Electrotechnical Society, 2014, 29(8): 97-102. [7] Taufiq D. Advanced propulsion drives and technology for tomorrow’s railways[C]//3th International Con- ference on Railway Traction Systems, Tokyo, Japan, 2007: 1-7. [8] Hugo N, Stefanutti P, Pellerin M, et al. Power electronics traction transformer[C]//12th European Conference Power Electronics Applications, Aalborg, Denmark, 2007: 1-10. [9] Zhao C, Dujic D, Mester A, et al. Power electronic traction transformer—medium voltage prototype[J]. IEEE Transactions on Industrial Application, 2014, 61(7): 3257-3268. [10] Huang Q, Crow L, Heydt T, et al. The future renewable electric energy delivery and management (FREEDM) system: the energy internet[J]. Proceedings of the IEEE, 2011, 99(1): 133-148. [11] Bifaretti S, Zanchetta P, Watson A, et al. Advanced power electronic conversion and control system for universal and flexible power management[J]. IEEE Transactions on Smart Grid, 2011, 2(2): 231-243. [12] 兰征, 涂春鸣, 肖凡, 等. 电力电子变压器对交直流混合微网功率控制的研究[J]. 电工技术学报, 2015, 30(23): 50-57. Lan Zheng, Tu Chunming, Xiao Fan, et al. The power control of power electronic transformer in hybrid AC-DC microgridr[J]. Transactions of China Elec- trotechnical Society, 2015, 30(23): 50-57. [13] Wang X, Liu J, Ouyang S, et al. Research on unbalanced-load correction capability of two power electronic transformer topologies[J]. IEEE Transactions on Power Electronics, 2015, 30(6): 3044-3056. [14] 顾春阳, 郑泽东, 李永东. 用于机车牵引的新型级联H桥整流器电压平衡方法[J]. 电工技术学报, 2013, 28(12): 168-181. Gu Chunyang, Zheng Zedong, Li Yongdong. Research on a high frequency multi-winding transformer isolated multilevel converter[J]. Transactions of China Elec- trotechnical Society, 2013, 28(12): 168-181. [15] Shi J, Gou W, Yuan H, et al. Research on voltage and power balance control for cascaded modular solid- state transformer[J]. IEEE Transactions on Power Electronics, 2011, 26(4): 1154-1166. [16] Zhao T, Wang G, 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. [17] Wang G, She X, Wang F, et al. Comparisons of different control strategies for 20kV∙A solid state transformer[J]//IEEE Energy Conversion Congress Exposition, 2011, 47(10): 3173-3178.
2016, Vol. 31 
