An Adaptive Submodule Voltage Balancing Method for Modular Multilevel Converter in HVDC Transmission System

被引：0
|
作者：
Zhao, Cong [1 ]
Li, Yaohua [1 ]
Li, Zixin [1 ]
Wang, Ping [1 ]
Luo, Yongjie [1 ]
机构：
[1] Chinese Acad Sci, Inst Elect Engn, Key Lab Power Elect & Elect Dr, Beijing, Peoples R China
来源：
PROCEEDINGS OF THE IECON 2016 - 42ND ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY | 2016年
关键词：
Modular Multilevel Converter; SM voltage balancing method; average switching frequency; efficiency;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Modular Multilevel Converter (MMC) is considered a promising circuit topology for high voltage and high power applications. There is a trade-off between submodule (SM) capacitor voltage balancing and switching frequency. In this paper, an adaptive SM capacitor voltage balancing method is proposed based on that different arm currents have different charging or discharging capabilities. The algorithm can reduce switching frequency without affecting capacitor voltage balancing. The threshold current selection and average switching frequency calculation of power device are presented which provide theoretical basis to system design. Finally, the simulation results validate the effectiveness of the proposed method.
引用
收藏
页码：2514 / 2519
页数：6
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