Research on Mechanism and Suppression Method of Current Unbalance of Parallel IGBTs

被引：0

作者：

Li, Jinyuan ^{[1
]}

Han, Lubin ^{[2
]}

Liang, Lin ^{[2
]}

Chen, Zhongyuan ^{[1
]}

Wang, Rui ^{[2
]}

Tan, Guoqiang ^{[2
]}

机构：

[1] Global Energy Interconnect Res Inst, Power Semicond Inst, Beijing, Peoples R China

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

来源：

2018 IEEE INTERNATIONAL POWER ELECTRONICS AND APPLICATION CONFERENCE AND EXPOSITION (PEAC) | 2018年

基金：

国家重点研发计划;

关键词：

chip; packaging; driver; current sharing; Press-Pack IGBT module;

D O I：

暂无

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：

To study the influence mechanism of asymmetric parameters on current sharing, the appropriate approximation is taken to solve the time-domain expression of the current difference when the parameters are inconsistent. From the expression, the factors that contribute to current imbalance are analyzed. By comparing the expression of current difference caused by different parameters that result in static or dynamic current imbalance, the sensitivity of different parameters of chip, packaging and driver to the current distribution is analyzed. The theoretical analysis is verified by experiment, partly. Based on the expression of current difference, a method of reducing the current difference is discussed and experimentally verified. The improvement of current imbalance due to mismatched Delta L-com decreasing from 46% to 21% is achieved. By this method, the current distribution in a Press-Pack IGBT module could be successfully improved by 50%.

引用

页码：1879 / 1884

页数：6

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