Optimization Control Strategy of Capacitor Voltage for Modular Multilevel Converter Based on Mathematical Analysis of Circulating Current

被引：0

作者：

Meng J. ^{[1
]}

Song Q. ^{[1
]}

Sun Q. ^{[1
]}

Li X. ^{[1
]}

Xu S. ^{[2
]}

Rao H. ^{[2
]}

机构：

[1] State Key Laboratory of Control and Simulation of Power System and Generation Equipments, Department of Electrical Engineerin, Tsinghua University, Beijing

[2] State Key Laboratory of HVDC Transmission Technology, Electric Power Research Institute, China South Power Grid, Guangzhou

来源：

Gaodianya Jishu/High Voltage Engineering | 2019年 / 45卷 / 03期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Capacitor voltage ripple; Circulating current; Mathematical analysis model; Modular multilevel converter(MMC); Optimum control strategy;

D O I：

10.13336/j.1003-6520.hve.20190226028

中图分类号：

学科分类号：

摘要：

Bulk capacitor is used to limit capacitor voltage ripple in modular multilevel converter (MMC). First, we propose a mathematical model which depicts the relationship between the peak value of capacitor voltage ripple and the 2nd -order circulating current in various conditions by studying the analytic relationship between them. Then, the peak value of capacitor voltage ripple is controlled to the reference by injecting 2nd -order circulating current with the aim of acceptable capacitor voltage ripple. The method can not only achieve the control destination, but also reduce arm current to improve margin of safety. Finally, the simulation and experimental results verity the validity of the proposed method. © 2019, High Voltage Engineering Editorial Department of CEPRI. All right reserved.

引用

页码：882 / 889

页数：7

共 18 条

[1]

Marquardt R., Lesnicar A., A new modular voltage source inverter topology, Proceedings of European Conference on Power Electronics and Applications, pp. 1-10, (2003)

[2]

Chang H., Chen D., Wu Y., Et al., Analysis and optimization strategy of power disturbance on Xiamen flexible HVDC project, High Voltage Engineering, 42, 10, pp. 3045-3050, (2016)

[3]

Marquardt R., New concept for high voltage-modular multilevel converter, Proceedings of the 34th IEEE Annual Power Electronics Specialists Conference, pp. 20-25, (2003)

[4]

Guo Z., Han Y., Zhao Y., Et al., Study on transient current of the key equipment in flexible DC power distribution system, High Voltage Engineering, 43, 4, pp. 1280-1288, (2017)

[5]

Genmell B., Dorn J., Retzmann D., Et al., Poospects of multilevel VSC technologies for power transmission, IEEE T& D Conference and Exposition, pp. 1-16, (2008)

[6]

Ma W., Jiang L., Li L., Et al., Circulating current suppressing strategy of modular multilevel converter in fault-tolerant control mode, High Voltage Engineering, 40, 11, pp. 3513-3518, (2014)

[7]

Li G., Xin Y., Wu X., Arm current analysis of modular multilevel converter and its circulating current suppressing method, Autamation of Electric Power Systems, 38, 24, pp. 62-67, (2014)

[8]

Song P., Lin J., Li Y., Circulating current analysis and suppressing controller designing of the MMC based on railway static power conditioner, High Voltage Engineering, 42, 11, pp. 3539-3547, (2016)

[9]

Yang X., Zheng Q., A novel universal circulating current suppressing strategy based on the MMC circulating current model, Proceedings of the CSEE, 32, 18, pp. 59-65, (2012)

[10]

Song Q., Liu W., Li X., Et al., A analytical method for analysis on steady-state operating characteristics of modular multilevel converter, Power System Technology, 36, 11, pp. 198-204, (2012)

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