On Modelling of Maximum Electromagnetic Field in Electrically Large Enclosures

IF 0.8 4区 工程技术 Q4 INSTRUMENTS & INSTRUMENTATION
Dan Chen, Peng Hu, Zhong Zhou, Xiang Zhou, Shouyang Zhai, Yan Chen
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引用次数: 1

Abstract

Abstract The maximum electromagnetic field formed in the electrically large enclosures for a given input power has always been the focus of electromagnetic compatibility issues such as radiation sensitivity and shielding effectiveness. To model the maximums in a simple manner, the electrically large enclosure can be regarded as a reverberation chamber (RC), thus the generalized extreme value (GEV) theory based framework is used for both undermoded and overmoded frequencies. Since the mechanical stirrer is not easy to be installed like that for RC, frequency stirring and mechanical stirring related configurations are discussed, and the corresponding results have confirmed the validity of frequency stirring with the estimate of the parameters in GEV distribution. As for the maximum field, a comparison has been made between GEV distribution and IEC 61000-4-21, and the corresponding results have also highlighted that the maximum field can be assessed by frequency stirring configuration, and by GEV distribution with a desired confidence.
大型电罩中最大电磁场的建模研究
摘要对于给定的输入功率,大型电气外壳中形成的最大电磁场一直是电磁兼容性问题的焦点,如辐射灵敏度和屏蔽有效性。为了以简单的方式对最大值进行建模,可以将电气大型外壳视为混响室(RC),因此基于广义极值(GEV)理论的框架用于欠模和过模频率。由于机械搅拌器不像RC那样易于安装,因此讨论了频率搅拌和机械搅拌的相关配置,相应的结果通过对GEV分布参数的估计证实了频率搅拌的有效性。关于最大场,在GEV分布和IEC 61000-4-21之间进行了比较,相应的结果也强调了最大场可以通过频率搅拌配置和具有期望置信度的GEV分布来评估。
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来源期刊
Measurement Science Review
Measurement Science Review INSTRUMENTS & INSTRUMENTATION-
CiteScore
2.00
自引率
11.10%
发文量
37
审稿时长
4.8 months
期刊介绍: - theory of measurement - mathematical processing of measured data - measurement uncertainty minimisation - statistical methods in data evaluation and modelling - measurement as an interdisciplinary activity - measurement science in education - medical imaging methods, image processing - biosignal measurement, processing and analysis - model based biomeasurements - neural networks in biomeasurement - telemeasurement in biomedicine - measurement in nanomedicine - measurement of basic physical quantities - magnetic and electric fields measurements - measurement of geometrical and mechanical quantities - optical measuring methods - electromagnetic compatibility - measurement in material science
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