Kalman Filter Predictive Method for Capacitor Voltage of Modular Multilevel Converter

被引：0
|
作者：
Yue Y. [1 ]
Yang X. [1 ]
Wu X. [1 ]
Tang X. [1 ]
Wang W. [1 ]
Guo P. [2 ]
机构：
[1] School of Electrical and Information Engineering, Changsha University of Science and Technology, Hunan Province, Changsha
[2] National Electric Power Conversion and Control Engineering Technology Research Center, Hunan University, Hunan Province, Changsha
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2023年 / 43卷 / 03期
基金：
中国国家自然科学基金;
关键词：
current sensor; fast model predictive control (FMPC); Kalman filter predictive method; modular multilevel converter (MMC); predicted values of capacitor voltages;
D O I：
10.13334/j.0258-8013.pcsee.212503
中图分类号：
学科分类号：
摘要：
To avoid the threat of the submodule (SM) voltage sensor failure to the safe and reliable operation of the modular multilevel converter (MMC) in DC distribution grid, the standby measurement equipment should be configured. Generally, the SMs are equipped with standby voltage sensors to ensure the highly reliable measurement, while complicating the hardware structure in engineering. Therefore, a Kalman filter predictive method for capacitor voltages of the standby mode of MMC measurement system applied to medium and high voltage applications is proposed, integrating the fast model predictive control (FMPC) strategy simultaneously for improving the stability of power conversion. Firstly, each arm is equipped with only one current sensor without any voltage sensors, and the Kalman filter observer is constructed. Then, the Kalman filter predictive method is proposed. Furthermore, in terms of the predicted values of the capacitor voltages, the objective optimization cost function of FMPC is established to determine the optimal arm level number and the switching conditions of SMs. With the proposed method, the hardware structure of the measurement system could be significantly simplified, on the premise of ensuring the tracking performance for the output currents and circulating currents, and the prediction accuracy for the capacitance voltages. Finally, the 21-level simulation model and 3-level experimental setup of MMC are built. The feasibility and practicability of theproposed method are validated by the simulation examples and experiment conditions. ©2023 Chin.Soc.for Elec.Eng.
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页码：1142 / 1153
页数：11
相关论文
共 26 条
  • [1] WU Ming, LIU Haitao, CHEN Wenbo, Research on active protection for MV/LV DC distribution system [J], Proceedings of the CSEE, 36, 4, pp. 891-899, (2016)
  • [2] ZHAO Wenmeng, CHEN Pengwei, CHEN Xin, AC current feedback damping control strategy for VSC converter station in multi-terminal DC distribution system [J], Proceedings of the CSEE, 41, 10, pp. 3505-3517, (2021)
  • [3] XIONG Xiong, JI Yu, LI Rui, An overview of key technology and demonstration application of DC distribution and consumption system[J], Proceedings of the CSEE, 38, 23, pp. 6802-6813, (2018)
  • [4] DENG Fujin, WANG Qingsong, Dong LIU, Reference submodule based capacitor monitoring strategy for modular multilevel converters[J], IEEE Transactions on Power Electronics, 34, 5, pp. 4711-4721, (2019)
  • [5] Binbin LI, Zigao XU, WANG Shengbo, Interface algorithm design for power hardware-in-the-loop emulation of modular multilevel converter within high-voltage direct current systems[J], IEEE Transactions on Industrial Electronics, 68, 12, pp. 12206-12217, (2021)
  • [6] LIU Wenjun, LIU Fei, GAO Haiyou, Et al., A transformerless three-port nonagonal MMC for the grid connection and local consumption of distributed generation[J], IEEE Journal of Emerging and Selected Topics in Power Electronics, 7, 1, pp. 108-117, (2019)
  • [7] CHEN Dunhui, HONG Chao, TAN Zhukui, Adaptive power control strategy for flexible and straight system based on energy balance analysis [J], Proceedings of the CSEE, 40, 7, pp. 2255-2268, (2020)
  • [8] XU Kunshan, XIE Shaojun, Diagnosis method for submodule failures in modular multilevel converter based on incremental predictive model[J], Proceedings of the CSEE, 38, 21, pp. 6420-6429, (2018)
  • [9] LIU Kai, YAO Jun, WANG Jun, Small signal stability analysis and optimization control of offshore wind power generation MMC-HVDC grid-connected system based on zero-sequence circulating current controller[J], Proceedings of the CSEE, 41, 12, pp. 4068-4080, (2021)
  • [10] XIA Chaoying, WANG Siyu, YU Jiali, State error feedback control strategy and stability analysis of flying-capacitor modular multilevel converter [J], Proceedings of the CSEE, 41, 16, pp. 5693-5704, (2021)
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