Optimization design of full bridge MMC parameters based on loss analysis

被引:0
|
作者
Yang L. [1 ]
Zhu Y. [1 ]
Sun X. [1 ]
Liu S. [1 ]
机构
[1] State Key Laboratory of Power Grid Safety and Energy Conservation, China Electric Power Research Institute, Beijing
来源
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2020年 / 40卷 / 03期
关键词
Full bridge sub-module; Loss analysis; Modular multilevel converter; Parameter design;
D O I
10.16081/j.epae.202003017
中图分类号
学科分类号
摘要
The full bridge MMC(Modular Multilevel Converter) is suitable for the overhead line transmission of VSC-HVDC(Voltage Source Converter based High Voltage Direct Current), due to its capabilities of riding through DC short circuit fault and supporting AC voltage. However, the huge power loss of full bridge MMC imposes a great challenge on its applications in high power occasions. The negative levels of full bridge sub-modules are not utilized during normal operations in the traditional design of full bridge MMC. Hence, an efficient optimization design approach based on the negative levels of full bridge MMC is proposed. The constraints that the power variables of the full bridge MMC should satisfy are analyzed. Then, the optimal DC voltage, AC voltage and sub-module number are derived. The proposed approach can accurately provide the optimal design parameter of MMC system under the rated power and the certain switching devices. © 2020, Electric Power Automation Equipment Editorial Department. All right reserved.
引用
收藏
页码:128 / 133
页数:5
相关论文
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