The strategy of second harmonic voltage match suppression for the DC-link in inverter

被引：2
|
作者：
Zhong, Minghang [1 ]
Tong, Xiangqian [1 ]
Huang, Jingjing [2 ]
机构：
[1] Xian Univ Technol, Sch Elect Engn, Xian 710054, Peoples R China
[2] Xi An Jiao Tong Univ, Sch Elect Engn, Xian 710049, Peoples R China
来源：
ENERGY REPORTS | 2022年 / 8卷
基金：
中国国家自然科学基金;
关键词：
Second harmonic voltage; Power coupling; Bandpass filter; Match suppression; CURRENT REDUCTION;
D O I：
10.1016/j.egyr.2021.11.077
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 the two-stage converter such as PV renewable energy system, the second harmonic fluctuation exists in the DC voltage due to the power coupling between the DC-link and AC system. The second harmonic voltage in the DC link could increase the system loss and decrease the stability of the converter system, and its generation process and transmission mechanism are analyzed in this paper. The mathematical expression of second harmonic voltage in DC-link has been derived. A second band passing filter (BPF) feedback control loop is used to feedback the second harmonic ripple voltage in DC link into the statable modulation index. This strategy can decrease the second harmonic voltage in the DC-link and the third harmonic voltage in the AC sides. Finally, the control parameters are implemented using a simulation platform, and the match suppression strategy is validated by the simulation results. (C) 2021 The Author(s). Published by Elsevier Ltd.
引用
收藏
页码：188 / 195
页数：8
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