A Flexible DC Voltage Balancing Control Based on the Power Flow Management for Star-Connected Cascaded H-Bridge Converter

被引：0
|
作者：
Lee, Chia-Tse [1 ]
Chen, Hsin-Chih [1 ]
Wang, Ching-Wei [1 ]
Wu, Ping-Heng [1 ]
Yang, Ching-Hsiang [1 ]
Cheng, Po-Tai [1 ]
机构：
[1] Natl Tsing Hua Univ, Ctr Adv Power Technol, Dept Elect Engn, Hsinchu, Taiwan
来源：
2014 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) | 2014年
关键词：
Modular Multilevel Cascaded Converter; PWM cascaded converter; STATCOM; Capacitor voltage balancing control; Low-voltage ride-through (LVRT); STATCOM;
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：
This paper presents the flexible dc capacitor voltages balancing control method for star-connected cascaded H-bridge converters. In this paper, the power flows are analysed by investigating all the converter's control freedoms. Based on the analyses, users can accomplish dc capacitor voltage balancing with both negative-sequence current and zero-sequence voltage. These two kinds of control options are further integrated together with the defined weighting factor K The low-voltage ride-through operation of proposed control method is also discussed in this paper. The control method is verified with a 220-V 1kVA STATCOM based on star-connected cascaded H-bridge converters, and the experimental test results show that all the dc voltages are well-regulated at the commanded value with different weighting factor K.
引用
收藏
页码：3922 / 3929
页数：8
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