A Modify Double Exponential Base-current and Its Application in Evaluating the Lightning EM Fields
Zhang Yan1, Liu Fugui1, Wang Youhua1, Wang Chuanchuan2, Liu Rongmei1
1. Province Ministry Joint Key Lab of Electromagnetic Field and Electrical Apparatus Reliability Hebei University of Technology Tianjin 300130 China
2. Ordnance Engineering College Shijiazhuang 050003 China
In IEC62305, GB50057—2010 and MIL—STD—464 double exponential current waveform has been defined as standard base-current waveform, it is noteworthy to develop a solution for the electromagnetic fields which utilizes this waveform. In order to facilitate the integration required for deriving the field, Taylor series expansion will be used for all variable dependent exponential terms within the current waveform. This methodology greatly simplifies the integration required to solve for the electromagnetic fields in an approximated closed form. However, by utilizing Taylor series to approximate the variable dependent exponentials, the electromagnetic fields' accuracy becomes a function of the number of terms used. Consequently, a correction factor will have to be added in order to reshape the electromagnetic fields which results from the modified base-current waveform.
张岩, 刘福贵, 汪友华, 王川川, 刘荣美. 改进的双指数函数雷电流波形及其辐射电磁场的计算[J]. 电工技术学报, 2013, 28(2增): 133-139.
Zhang Yan, Liu Fugui, Wang Youhua, Wang Chuanchuan, Liu Rongmei. A Modify Double Exponential Base-current and Its Application in Evaluating the Lightning EM Fields. Transactions of China Electrotechnical Society, 2013, 28(2增): 133-139.
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2013, Vol. 28 
