中国电机工程学报Issue(33)：5846-5853,8.DOI:10.13334/j.0258-8013.pcsee.2014.33.006
采用质因子分解法的模块化多电平换流器电容电压平衡优化算法
An Optimized Capacitor Voltage Balancing Control Algorithm for Modular Multilevel Converter Employing Prime Factorization Method
摘要
Abstract
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.关键词
模块化多电平换流器/电容电压平衡/子模块分组/排序次数/质因子分解Key words
modular multilevel converter (MMC)/capacitor voltage balancing/sub-module grouping/sort times/prime factorization分类
信息技术与安全科学引用本文复制引用
彭茂兰,赵成勇,刘兴华,郭春义..采用质因子分解法的模块化多电平换流器电容电压平衡优化算法[J].中国电机工程学报,2014,(33):5846-5853,8.基金项目
国家自然科学基金项目(51177042)；国家863高技术基金项目(2013AA050105)。Project Supported by National Natural Science Foundation of China (51177042) （51177042）
The National High Technology Research and Development of China 863 Program (2013AA050105) （2013AA050105）
