摘要
模块化多电平换流器(MMC)作为一种新型多电平拓扑结构的电压源换流器,具有扩展性强、输出电压质量高、谐波含量少等优点,已经展现出极其重要的工程应用前景。文章首先介绍了MMC-HVDC的拓扑结构、运行原理、数学模型、控制策略及调制方式,然后利用PSCAD电磁暂态仿真软件建立了MMC-HVDC的仿真模型,最后基于该模型进行仿真并给出仿真结果,验证了所建模型的正确性。
As a new type of multilevel topology structure of VSC,the modular multilevel converter has advantages in expansibility,high output voltage quality,low harmonic,etc.It has shown its significant project prospects.Firstly,the topology structure and working mechanism of MMC-HVDC are introduced in this paper.Consequently the operation modes are analysed.Then the mathematical model of MMC-HVDC is established.In addition the control strategies and modulation are studied.Secondly,MMC-HVDC transmission system based on PSCAD/EMTDC is constructed.Finally,based on the MMC-HVDC model simulation results are given to verify the correctness of the model..
作者
高淑萍
胡振宇
GAO Shu-ping et al(Xi＇an University of Science and Technology, Xi＇an 710054, China)
出处
《河南机电高等专科学校学报》
CAS
2017年第2期1-7,71,共8页
Journal of Henan Mechanical and Electrical Engineering College
