电力建设2017，Vol.38Issue(11)：26-31,6.DOI:10.3969/j.issn.1000-7229.2017.11.004
模块化多电平换流器排序频率优化设计
Optimal Design of Ranking Frequency for Modular Multilevel Converter
高冠伦 1李庚银2
作者信息
- 1. 国网浙江省电力公司杭州供电公司,杭州市310009
- 2. 新能源电力系统国家重点实验室(华北电力大学) ,北京市102206
- 折叠
摘要
Abstract
Modular multilevel converter ( MMC ) has been widely used due to its typical advantages, and the sort algorithm of voltage capacitor balancing in MMC sub-modules has been a hot issue nowadays. The optimization of most voltage balancing algorithm is mainly aimed to reduce the time and computing complexity and its switching frequency at present. This paper analyzes the renewal process and wave principle of the capacitor voltage in MMC sub-modules, and deduces the calculation method of the minimum ranking frequency of voltage balancing algorithm. The influence of the ranking frequency on the voltage balancing effect is studied by simulation, and the ranking frequency is optimized according to the simulation results. Finally, taking Xiamen Project as an example, this paper constructs the model in PSCAD/EMTDC for simulation, to verify the correctness of the proposed optimized design scheme. The simulation results show that the proposed ranking algorithm optimization algorithm has good voltage balancing effect, which can reduce half of the switching frequency of the device compared with the traditional time sorting method and can reduce the computational complexity of the overall average time at the same time.关键词
模块化多电平换流器(MMC)/最近电平逼近调制/电容电压均衡/排序算法/开关频率Key words
modular multilevel converter ( MMC )/nearest level modulation/voltage capacitor balancing/ranking algorithm/switching frequency分类
信息技术与安全科学引用本文复制引用
高冠伦,李庚银..模块化多电平换流器排序频率优化设计[J].电力建设,2017,38(11):26-31,6.
