Submodule Switching-State Based EMI Modeling and Mixed-Mode EMI Phenomenon in MMC

被引：13

作者：

Sun, Tao ^{[1
]}

Pei, Xuejun ^{[1
]}

Shan, Yue ^{[1
]}

Pei, Jian'guo ^{[1
]}

Jiang, Dong ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Elect & Elect Engn, State Key Lab Adv Electromagnet Engn & Technol, Wuhan 430074, Peoples R China

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2023年 / 38卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Switches; Electromagnetic interference; Heating systems; Analytical models; Semiconductor device modeling; Capacitors; Voltage measurement; Electromagnetic interference (EMI) model; heatsink connecting patterns; mixed-mode (MM) EMI phenomenon; modular multilevel converter (MMC); submodule switching states;

D O I：

10.1109/TPEL.2022.3214990

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 widely used in high-voltage occasions for its good power qualities and flexible controls. However, the large number of semiconductor switches would lead to an extremely complicated electromagnetic environment. To clarify the detailed conducted electromagnetic interference (EMI) mechanisms of MMC, this article builds an EMI model of MMC considering different submodule switching states. Based on this model, the EMI paths of submodule switching-ON and switching-OFF processes are analyzed. Then, this article analyzes the effects of submodule heatsink connecting patterns on EMI, and explains the mechanisms of mixed-mode (MM) EMI phenomenon that common-mode component brings in extra differential-mode component. Simulation and experiment results verify the proposed EMI mechanisms and MM phenomenon. The conclusions of this article have great reference significance for the EMI research of MMC and other high-voltage converters.

引用

页码：1831 / 1843

页数：13

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