电力系统自动化2017，Vol.41Issue(15)：136-142,7.DOI:10.7500/AEPS20161205009
具有较低复杂度和开关频率的MMC混合排序均压算法
Hybrid Sorting Algorithm with Low Complexity and Switching Frequency for Capacitor Voltage Balanced Control of Modular Multilevel Converter
摘要
Abstract
The modular multilevel converter (MMC) is applied in the DC transmission system all over the world,while the capacitor voltage balanced control strategy stands out for its difficulty and complexity.This paper presents a sorting algorithm based on a comparison between two groups,called the OF sorting algorithm.The maximum time complexity of the method is N-1,but the algorithm is unlikely to be practical because of its limited range of application.Therefore,a new hybrid sorting algorithm for capacitor voltage balanced control of MMC is proposed to reduce the time complexity and device switching frequency.The effectiveness of the proposed algorithm under various conditions is verified based on the Xiamen MMC-HVDC project.The time complexity of the new hybrid sorting algorithm is 1.45N,which is better than that of other existing MMC sorting methods for about half reducing the switching frequency compared with the traditional bubble sorting method.关键词
模块化多电平换流器/最近电平逼近调制/电容电压均衡/分组排序法/时间复杂度Key words
modular multilevel converter (MMC)/nearest level modulation (NLM)/capacitor voltage balanced/group sorting/time complexity引用本文复制引用
赵成勇,熊岩,徐义良,许建中,姬煜轲,刘航..具有较低复杂度和开关频率的MMC混合排序均压算法[J].电力系统自动化,2017,41(15):136-142,7.基金项目
中央高校基本科研业务费专项资金资助项目(2016MS07) （2016MS07）
国家重点研发计划资助项目(2016YFB0900903) （2016YFB0900903）
国家自然科学基金资助项目(51607065).This work is supported by Fundamental Research Funds for the Central Universities (No.2016MS07),National Key Research and Development Program of China (No.2016YFB0900903),and National Natural Science Foundation of China (No.51607065). （51607065）
