A Supervised Capacitor Voltage Balancing Method of Modular Multilevel DC/DC Converters for Medium Voltage DC Application

被引：0
|
作者：
Sheng, Jing [1 ]
Chen, Cong [1 ]
Li, Chushan [1 ]
Xiang, Xin [1 ]
Li, Wuhua [1 ]
He, Xiangning [1 ]
机构：
[1] Zhejiang Univ, Coll Elect Engn, Hangzhou, Peoples R China
来源：
2021 23RD EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'21 ECCE EUROPE) | 2021年
关键词：
Modular Multilevel Converters (MMC); Capacitor Voltage Balancing; Ripple Minimization; Medium Voltage Converter; DC-DC Converters; MMC;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
In this paper, the submodule capacitor voltage fluctuation of high-frequency modular multilevel dc-dc (MMDC) converters is investigated firstly. Considering the high switching frequency and the control delay in practice, the issue of large capacitor voltage ripple in MMDC converters is revealed. Then a supervised capacitor voltage balancing method is proposed in this paper. This balancing method can avoid the continuous charging of submodule capacitors, which can reduce the voltage ripple by 61%. Finally, the theoretical analysis and proposed method is validated on a 16kV MMDC prototype.
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页数：7
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