An optimized capacitor voltage balancing control algorithm for modular multilevel converter employing prime factorization method

被引：0

作者：

Peng, Maolan ^{[1
]}

Zhao, Chengyong ^{[1
]}

Liu, Xinghua ^{[2
]}

Guo, Chunyi ^{[1
]}

机构：

[1] State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources (North China Electric Power University), Changping District, Beijing

[2] Qingdao Power Supply Company, Qingdao, 266002, Shandong Province

来源：

Peng, Maolan | 1600年 / Chinese Society for Electrical Engineering卷 / 34期

基金：

中国国家自然科学基金;

关键词：

Capacitor voltage balancing; Modular multilevel converter (MMC); Prime factorization; Sort times; Sub-module grouping;

D O I：

10.13334/j.0258-8013.pcsee.2014.33.006

中图分类号：

学科分类号：

摘要：

The capacitor voltage balancing of modular multilevel converter (MMC) determines the stable operation of MMC based high voltage direct current (HVDC) transmission system. When the number of sub-modules (SMs) is excessive, it requires a large amount of computation time, which poses a challenge to the design of the physical controller. To solve this problem, this paper proposed an improved capacitor voltage balancing method. The improved method grouped the SMs to reduce the computing quantity of sorting the capacitor voltages, and maintained the voltage balancing between groups by adopting the voltage balancing algorithm between groups. Then the optimization method inspired by the prime factorization principle is put forward. A MMC-HVDC model was developed in RT-Lab. The simulation results show that the improved method and the optimization method can both reduce the amount of computation and improve the simulation speed significantly with the balancing of capacitor voltages. All those results verify the effectiveness and feasibility of the improved method and the optimization method. © 2014 Chin. Soc. for Elec. Eng..

引用

页码：5846 / 5853

页数：7

共 20 条

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