Development and Research of a Medium Vertical Dipole Electromagnetic Pulse Simulator
Author:
Jia Wei1, Mei Kaisheng1, Cheng Le1ORCID, Wu Wei1, Chen Zhiqiang1ORCID, Guo Fan1, Wang Yi1, Shi Ling1, Wang Wei1, Shi Yuewu1, Zhu Xiangqin1, Wu Gang1, Li Yaoyao1
Affiliation:
1. National Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi’an 710024, China
Abstract
In this paper, the design of a self-developed EMP simulator with a 5 m height and an inverted conducting mono-cone antenna with a cone half-angle of 32° is introduced. The experimental region of the simulator is a circular area of 25 m in diameter around the cone vertex. Two feeding modes, feed-in over the ground and feed-in under the ground, are realized by two different high-voltage pulse sources. It can be concluded through radiation field testing that the radiation field waveform generated by the simulator has a rise time of 2–3 ns and a half-width of about 25 ns, meeting the specifications of the EMP experimental waveform in the IEC61000-2-9 standard. Meanwhile, the differences between the engineering implementation of the simulator and its ideal structure during the design process can lead to some distortion issues in the antenna radiation characteristics and the electromagnetic radiation field it generates. The radiation field waveform and the distribution of the EMP field generated by the simulator under different feeding methods, antenna wire quantities, antenna end processing methods, and different antenna resistive loading were studied, and the changes in the radiation field waveform and field distribution with different angles and distances of the monitoring point were analyzed. Based on the measurement results, the radiation characteristics of the antenna and the factors that affect the waveform of the field were studied and analyzed. Through the aforementioned work, a comprehensive understanding of the performance, radiation characteristics, and engineering factors affecting the electromagnetic environment generated by the simulator has been obtained. On this basis, the parameters of the antenna wire quantity, antenna end processing method, and test point position of the designed simulator were reconfirmed and optimized. In summary, this work has important reference significance for mastering the development technology of such simulators, understanding their antenna radiation characteristics, and conducting EMP-related assessments and effect experiments in the future.
Subject
Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction
Reference26 articles.
1. Qiu, A. (2016). Application of Pulse Power Technology, Shaanxi Science and Technology Press. 2. Zhou, B., Chen, B., and Shi, L. (2003). EMP and EMP Protection, National Defense Industry Press. 3. Drivers of small and medium scale electromagnetic pulse simulator based on Marx generator;Jia;High Power Laser Part. Beams,2018 4. High-altitude electromagnetic pulse (HEMP) risetime evolution of technology and standards exclusively for E1 environment;Giri;IEEE Trans Electromagn. Compat.,2013 5. Introduction to HPEMP, IEME, EMC, and EM Susceptibility and Its Assessments;Qiao;Mod. Appl. Phys.,2013
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