14 Jul 2017
9:30
A104
S7: Engineering Modeling – Applied Engineering Electromagnetics
| 1. Some Notes on the Impulse Characteristics of Type A Grounding of Transmission Line Tower | ||
| Zijad Bajramović, Salih Čarsimamović, Adnan Mujezinović, Irfan Turković and Samir Avdaković (University of Sarajevo, Bosnia and Herzegovina); Meludin Veledar (International Council on Large Electric Systems, Bosnia and Herzegovina Committee, Bosnia and Herzegovina) | ||
| This paper deals with investigation of the impulse characteristics of,transmission line tower grounding. Investigations of the impulse,characteristics of transmission lines tower grounding in this paper are,based on experimental analysis conducted on type “A” grounding of,transmission line tower. Firstly, paper describes the problem of,back-flashover and impact of transmission lines tower grounding,impedance on it. Also, experimental investigation of impulse,characteristics with different rise time of current wave front on real,type “A” grounding are given. Finally, detail analysis of experimental,data is given. | ||
| 2. Comparison of Different Analytical Models to Determine Electric Field Radiated by a Base Station Antenna | ||
| Marin Galić (Environmental Measurement Center LTD, Croatia); Dragan Poljak and Vicko Dorić (University of Split, Croatia) | ||
| The paper deals with the comparison of three different models for the,assessment of the electric field radiated by a base station antenna,system: The antenna insulated in Free Space (FS), The antenna above,Perfect Ground (PG) and the antenna above a lossy half space. The,half-space is taken into account via Modified Image Theory Method (MIT).,The results obtained by three models are compared to the results,computed via Numerical Electromagnetics Code (NEC). Several variables,have been varied to examine the accuracy of a given approximation. The,calculations have been undertaken for the far field only. | ||
| 3. Spectral Analysis of the Weierstrass-Mandelbrot Function | ||
| Emanuel Guariglia (University of Salerno, Italy) | ||
| In this paper, the Weierstrass-Mandelbrot function on the Cantor set is,presented, with an emphasis on possible applications in science and,engineering. The one-sided Fourier transform of the,Weierstrass-Mandelbrot function is computed and an asymptotic,estimation, in accordance with the simulation results, is analytically,derived. Additionally, a time-frequency analysis of the,Weierstrass-Mandelbrot function is provided by the numerical computation,of both continuous wavelet transform and wavelet scalogram. | ||
| 4. Electrostatic Discharge Current Modelling Using Multi-Peaked Analytically Extended Function | ||
| Karl Lundengård, Milica Rančić and Sergei Silvestrov (Mälardalen University, Sweden); Vesna Javor (University of Niš, Serbia) | ||
| An examination of how the multi-peaked analytically extended function,(AEF) can be applied to modelling of electrostatic discharge (ESD),currents, is presented in the paper. Estimation of the AEF’s parameters,is achieved using the Marquardt least-squares method (MLSM). AEFs with 2,and 3 peaks are constructed so to represent the IEC Standard 61000-4-2,waveshape and measured data, respectively. Very good agreement with,reference waveshapes is achieved, proposing the multi-peaked AEF as a,good alternative for analytical representation of ESD currents. |