A design method of ac busbar for IGBT power assembly

2018 International Conference on Advanced Materials, Intelligent Manufacturing and Automation

材料科学;机械制造;运输工程

Xue, Y.P.^1,2,3,4 ; Liu, J.^2,3,4 ; Su, W.^2,3,4 ; Sun, W.^2,3,4

University of Chinese Academy of Sciences, Beijing

100190, China^1

Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing

100190, China^2

Key Laboratory of Power Electronics and Electric Drive, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing

100190, China^3

Beijing Eng. Laboratory of Electrical Drive System and Power Electronic Device Packaging Technology, Beijing

100190, China^4

关键词: Circuit modeling;    Current capacity;    Current problems;    Current-sharing;    Motor controllers;    Research object;    Safe operation;    Stray inductances;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/382/4/042034/pdf
DOI  :  10.1088/1757-899X/382/4/042034

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The design scheme of paralleling multiple IGBTs in power assembly to increase the current capacity is widely used in power electronic equipment. In order to ensure the equipment's safe operation, the power assembly's uneven current problem is a design difficulty. This paper analyzes the influence of ac and dc busbar stray inductance on the uneven current problem from the circuit model perspective, and put forward a method to improve the current sharing performance, which is to adjust the ac busbar stray inductance based on the dc busbar stray inductance. Taking a vehicle motor controller as the research object, designing an ac busbar with this design method. The experimental results confirmed the validity of this method.