Frequency analysis of the typical impulse voltage and current waveshapes of test generators

Author:

Javor Vesna1ORCID

Affiliation:

1. Department of Power Engineering, Faculty of Electronic Engineering, University of Niš, Serbia

Abstract

Frequency analysis of the impulse waveshapes of generators which are commonly used for testing of the equipment in high-voltage engineering is presented in this paper. Some of the typical impulse waveshapes, such as 1.2/50 ?s/?s, 10/350 ?s/?s, 10/700 ?s/?s, 10/1000 ?s/?s, and 250/2500 ?s/?s, are approximated by the Double-exponential function (DEXP) and by the terms of Multi-peaked analytically extended function (MP-AEF). Experimental set ups for impulse signal generation are based on the desired outputs as given in the IEC 60060-1 Standard. Dumped oscillations are characteristic of the standardized 8/20 ?s/?s waveshape. The positive part of the normalized Sinc function with dumped oscillations is also approximated by MP-AEF terms. The corresponding frequency spectra of these aperiodic signals are obtained analytically by using Piecewise Fourier transform (PWFT). This paper presents the procedure to obtain Fourier transforms of the functions with multiple and sharp peaks typical for the impulse current and voltage test generators? waveshapes.

Publisher

National Library of Serbia

Subject

General Materials Science

Reference22 articles.

1. I. F. Gonos, N. Leontides, F. V. Topalis, I. A. Stathopulos, "Analysis and design of an impulse current generator", WSEAS Transactions on Circuits and Systems, vol. 1, pp. 38-43, January 2002.

2. K. L. Kaiser, Electromagnetic Compatibility Handbook, CRC Press, 2015, Chapter 12, pp. 165.

3. D. Lovrić, S. Vujević, T. Modrić, "Least squares estimation of double-exponential function parameters," In Proceedings of the 11th Int. Conf. ПЕС 2013, Niš, Serbia, Sept. 2013, pp. 1-4.

4. K. Schon, High impulse voltage and current measurement techniques, Springer, 2013, Chapter 2, pp. 5-9.

5. V. Javor, "Multi-peaked functions for representation of lightning channel-base currents", In Proceedings of the ICLP 31st Int. Conference on Lightning Protection ICLP 2012, Sep. 2-7, 2012, OVE Vienna, Austria, Sep. 2012.

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