摘要
准确获得高压大功率开关器件的电磁特性对器件所在系统的电磁干扰预测十分重要。聚焦用于高压大功率开关器件电磁特性分析的开关波形等效方法,针对当前等效波形过于理想而无法体现器件开关瞬态中复杂频谱分量的问题,提出考虑器件开关过程电磁特性的解析模型。从解析模型的时域解析式出发,基于傅里叶变换理论,推导了解析模型的频域解析式,分析频谱包络特征参数,得到了解析模型的频谱特征。利用Si IGBT和SiC MOSFET器件实测的开关波形,验证了理论分析的正确性。
Accurately obtaining the electromagnetic characteristics of high-voltage and high-power switching devices is crucial for predicting the electromagnetic interference in a system in which the devices are located.Research is focused on an equivalent method of switch waveforms for analyzing the electromagnetic characteristics of high-voltage and high-power switching devices.Aimed at the problem that the existing equivalent waveforms are too ideal to reflect the complex spectral components in the switching transients of devices,an analytical model for the electromagnetic characteristics of devices considering their switching processes is proposed.Starting from the time-domain analytical formula for the analytical model and based on the Fourier transform theory,the frequency-domain analytical formula for the analytical model is derived,and the spectral envelope characteristic parameters are analyzed to obtain the spectral characteristics of the analytical model.The theoretical analysis was verified by using the measured switching waveforms of Si IGBT and SiC MOSFET devices.
作者
赵志斌
余鹏
田杰
ZHAO Zhibin;YU Peng;TIAN Jie(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(North China Electric Power University),Beijing 102206,China;Shenzhen Power Supply Bureau Co.,Ltd,Shenzhen 518000,China)
出处
《电源学报》
CSCD
北大核心
2024年第3期22-29,共8页
Journal of Power Supply
关键词
高压大功率
开关器件
电磁特性
解析模型
High-voltage and high-power
switching device
electromagnetic characteristic
analytical model
