Dead-Time Effect and Background Grid-Voltage Harmonic Suppression Methods for Inverters with Virtual Impedance Control

被引：0
|
作者：
Chen J. [1 ]
Zhang X. [1 ]
Yan Z. [1 ]
Wei Z. [2 ]
Chen X. [1 ]
机构：
[1] Jiangsu Key Laboratory of New Energy Generation and Power Conversion, Nanjing University of Aeronautics & Astronautics, Nanjing
[2] NARI Group Corporation/State Grid Electric Power Research Institute, Nanjing
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2021年 / 36卷 / 08期
关键词：
Dead-time compensation; Grid-voltage background harmonics; Indirect-current-controlled inverter (ICCI); Virtual impedance;
D O I：
10.19595/j.cnki.1000-6753.tces.200073
中图分类号：
学科分类号：
摘要：
Grid-connected inverters, as the interface between distributed energy and large power grids, have high requirements in terms of control structure and power quality. Inverters with indirect- current-control has fast power response and can realize the smooth transfer between grid-connected and stand-alone modes. In this paper, the grid-connected current distortion caused by the dead-time effect of the semiconductor devices and the grid-voltage background harmonics are analyzed. Furthermore, specific solutions by adding virtual parallel and series impedance are given to improve the power quality. Simulation and experiments verify the effectiveness of the proposed method. © 2021, Electrical Technology Press Co. Ltd. All right reserved.
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页码：1671 / 1680
页数：9
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