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This paper presents a new method with parallel FDTD algorithm based on MPI library to analyze thin-slot coupling, which often leads to huge computation. It is demonstrated that the adopted parallel strategy is feasible by comparing the results of serial FDTD computation with that of the proposed method. The high efficiency of this method is also proved. Comparison of the field components given by...
The EMP conductive susceptibility of a measurement and control device used in automatic management system is studied by experimental test. Two EMP waveforms with different rise time are applied to the devices. Responses of the EUT are measured and compared. The sensitivity thresholds of EUT are analyzed by statistical method. Results show the EMP with fast leading edge tends to cause more serious...
Aimed to acquire the screening efficiency of the shielded coaxial cable a time-domain measurement method is proposed and a test system based on the triaxial test fixture is designed. By using FFT, time-domain test result can be transformed in to frequency-domain. Comparison shows they fit well with each other. The proposed time-domain test method provides a more straight way to observe the screen...
One of the most important problems of FDTD method used in calculation of lightning electromagnetic effects is that the calculation is very expensive, time consuming, and sometimes even impossible due to the computer limitations. Mesh size and lightning channel length can greatly affect calculation speed in lightning electromagnetic field calculation. In this paper, Influences of different mesh sizes...
It presents a measurement of pulsed electric field by way of portable measurement system for the shielding effectiveness of pulsed electric field, tn order to research the influence of bonding method of cross points of reinforced grids and the size of reinforced grids, three bonding methods and two types of reinforced grids' size are evaluated in this measurement. Then the results of experiment are...
The influence of the variations of grounding electrode in volume, surface area, conductivity and permeability on transient grounding resistance (TGR) under pulsed discharging current is analyzed with FDTD method in this paper. From the computation results, some useful conclusion can be got as follow: the grounding electrodes with the same surface area have nearly the same TGR. For the grounding electrodes...
This paper presents measurements of shielding effectiveness of reinforced grids cubic cages to pulsed magnetic field. Under the environment of pulsed magnetic fields, the shielding effectiveness of some typical size of the reinforced grids cages were obtained. Two connecting methods for the cross points (welding or banding) of the reinforcement mesh are evaluated. For discussing the pulsed magnetic...
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