电磁兼容性
功率(物理)
电子工程
开关电源
电气工程
计算机科学
工程类
可靠性工程
电压
物理
量子力学
作者
Wanjun Yin,Zhengfeng Ming,Tao Wen
出处
期刊:Electronics Letters
[Institution of Engineering and Technology]
日期:2020-05-21
卷期号:56 (16): 813-816
被引量:2
摘要
On the basis of serious electromagnetic interference (EMI) produced by power electronic equipment, parasitic capacitance existing between transistor and heat sink is considered as the main factor disturbing common‐mode loop. Calculation model of parasitic capacitance is established by using finite element method and electrostatic field principle, and computing method is also derived. EMI improvement method for converter system is proposed by controlling the parasitic capacitance impedance. Experimental results show that changing the permittivity and thickness of the thermal conductive adhesive which are filled between the transistor heat‐conducting plate and heat sink to can reduce the conducted interference.
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