Synthetical Control Technology of DC Electric Energy Router Based on Port Energy Relationship

doi:10.11985/2020.02.006

Abstract

Abstract:

Aiming at the control problem of the energy router of the DC power distribution network, the response speed of the internal DC bus is improved through the integrated control method of the port energy, so as to improve the transient performance of the DC power router. Based on a four-port DC power router with dual active bridge conversion units, the energy flow of the ports is analyzed, the port energy model of the power router is established, and an integrated controller is designed based on the port energy relationship to comprehensively control the energy between units at all levels, the influence of the parameter differences of the passive components in the system on the comprehensive control is analyzed, a comprehensive control strategy is designed for the grid-connected operation of the DC power router, and the stability of the DC bus voltage is improved. Finally, the control strategy is simulated based on Matlab/Simulink, and the simulation results verify the effectiveness of the integrated control strategy. At the same time, the simulation results show that the control strategy proposed is conducive to reduce the capacitance value of low-voltage bus.

Key words: DC electric energy router, port energy, energy model, port energy control

CLC Number:

TM642

YANG Xinhua, CAO Lei, ZHANG Xiaoying. Synthetical Control Technology of DC Electric Energy Router Based on Port Energy Relationship[J]. Journal of Electrical Engineering, 2020, 15(2): 41-46.

Figures/Tables 8

References 11

[1]	江道灼, 郑欢. 直流配电网研究现状与展望[J]. 电力系统自动化, 2012,36(8):98-104.
	Jiang Daozhuo, Zheng Huan. Research status and developing prospect of DC distribution network[J]. Automation of Electric Power Systems, 2012,36(8):98-104.
[2]	宋强, 赵彪, 刘文华, 等. 智能直流配电网研究综述[J]. 中国电机工程学报, 2013,33(25):9-19,5.
	Song Qiang, Zhao Biao, Liu Wenhua, et al. An overview of research on smart DC distribution power network[J]. Proceedings of the CSEE, 2013,33(25):9-19,5.
[3]	Zhou Xuesong, Wang Fuzhi, Ma Youjie, et al. An overview on energy router based on various forms of energy[C]// Proceedings of IEEE Chinese Control and Decision Conference,Yinchuan,China, 2016:2901-2906.
[4]	Feng Gaohui, Zhao Zhengming, Yuan Liqiang, et al. Combined DC voltage control scheme for three-port energy router based on instantaneous energy balance[J]. Proceedings of IEEE Energy Conversion Congress and Exposition(ECCE), 2016:1-7.
[5]	高帅, 张兴, 赵文广, 等. 双有源桥DC-DC变换器最小回流功率控制策略[J]. 电气工程学报, 2019,14(2):24-29.
	Gao Shuai, Zhang Xing, Zhao Wenguang, et al. Minimum reactive power control strategy for dual active bridge DC-DC converter[J]. Journal of Electrical Engineering, 2019,14(2):24-29.
[6]	冯高辉, 赵争鸣, 袁立强. 基于能量平衡的电能路由器综合控制技术[J]. 电工技术学报, 2017,32(14):34-44.
	Feng Gaohui, Zhao Zhengming, Yuan Liqiang. Synthetical control technology of electric energy router based on energy balance relationship[J]. Transactions of China Electrotechnical Society, 2017,32(14):34-44.
[7]	Komurcugil H, Kukrer O. A new control strategy for single-phase shunt active power filters using a Lyapunov function[J]. IEEE Transactions on Industrial Electronics, 2006,53(1):305-312.
[8]	Valderrama G E, Stankovic A M, Mattavelli P. Dissipativity based adaptive and robust control of UPS in unbalanced operation[J]. IEEE Transactions on Power Electronics, 2003,18(4):1056-1062.
[9]	雷涛, 李龙春, 邬岑颖, 等. 双有源桥DC-DC暂态直流偏置分析和抑制策略研究[J]. 电气工程学报, 2018,13(7):8-15.
	Lei Tao, Li Longchun, Wu Cenying, et al. Study of transient DC-DC bias analysis and suppression methods in dual active bridge converter[J]. Journal of Electrical Engineering, 2018,13(7):8-15.
[10]	盛万兴, 李鹏华, 段青, 等. 基于Lyapunov优化方法的含能量路由器的能源集线器能量管理策略研究[J]. 中国电机工程学报, 2019,39(21):6212-6225.
	Sheng Wanxing, Li Penghua, Duan Qing, et al. Research on energy management strategy of energy hub with energy router based on Lyapunov optimization method[J]. Proceedings of the CSEE, 2019,39(21):6212-6225.
[11]	Mao X, Falcones S, Ayyanar R. Energy-based control design for a solid state transformer[C]// Proceedings of IEEE PES General Meeting,Minneapolis,MN,US, 2010:1-7.