A Novel Approach to the Positive DC Nonlinear Corona Design

Petković, Bojana; Ilić, S; Aleksić, Slavoljub; Raicevic, Nebojsa; Antić, Dragan

doi:10.1080/02726343.2011.607106

Cited by 5 publications

(5 citation statements)

References 9 publications

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“…If the intensity of the electric field is greater than 3 MV/m, corona spatial charge occurs. If so, the analysis given by Petković et al (2011) can be applied.…”

Section: Results Of the Optimization By Differential Evolution And Conclusionmentioning

confidence: 99%

Optimal selection of coaxial ring systems in environmental electrostatic shielding

Raicevic

Aleksić

Hederić

et al. 2018

COMPEL

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Purpose The purpose of this paper is to present a new calculation method for increasing the shielded volume in which the external electromagnetic field is maximally reduced. In a space shielded in the way mentioned in this paper, it is possible to introduce measurement instruments and increase the accuracy of results obtained with them, as well as reduce the risk of unwanted electrostatic field influence on living organisms. Design/methodology/approach A new numerical procedure for the optimization of the coaxial ring conductor system for electrostatic shielding is developed in the paper. The optimization of the functional that consists of electrostatic energy density and a system of equations derived from the equipotential character of the conductor system is used. The system of nonlinear equations is obtained and then numerically solved by minimizing this functional. The first presented optimization procedure is based on the analytical optimization method using the Lagrange coefficients and gradient of the objective function. Findings It is possible to design a large number of protective ring formations. Applying the differential evolution optimization method, an optimal arrangement can be obtained for any specific number of rings. The differential evolution optimization method, which belongs to the class of evolutionary algorithms, is used for solving this very complex optimization problem. In combination with the above-mentioned method, excellent results in the elimination of the external electric field have been obtained. Although a larger number of rings provides more efficient protection, this number is limited from the economic point of view. Therefore, it is necessary to achieve a compromise between the number of rings, the size of volume shielded and the quality of protection. Research limitations/implications There are few papers that address this problem, although the elimination of the influence of the external electromagnetic field has gained more importance lately. The presented method can be applied to increase the reliability of measured data, protection of the environment, in space research, etc. The main limiting factor for using a larger number of rings that provide better protection is the economical one. Originality/value The proposed method is suitable for the generalization of procedures, for the protection of the space where the external electric field needs to be reduced or eliminated.

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“…If the intensity of the electric field is greater than 3 MV/m, corona spatial charge occurs. If so, the analysis given by Petković et al (2011) can be applied.…”

Section: Results Of the Optimization By Differential Evolution And Conclusionmentioning

confidence: 99%

Optimal selection of coaxial ring systems in environmental electrostatic shielding

Raicevic

Aleksić

Hederić

et al. 2018

COMPEL

View full text Add to dashboard Cite

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“…Until now, it is applied to solving multilayered electromagnetic problems [18], grounding systems [19], as well as electromagnetic field determination in the vicinity of cable terminations [20]. The HBEM can be also applied to analysis of corona effects [21] and metamaterial structures [22]. The method efficiency and accuracy is confirmed in [20], comparing the obtained results with experimental ones and finite element method (FEM) results from [23].…”

Section: Introductionmentioning

confidence: 99%

“…The new method, developed at our Department, is based on the EEM, on the point-matching method (PMM) for the potential of the PEC electrodes and for normal component of electric field at the boundary surface between any two dielectric layers. This method is called the hybrid boundary element method (HBEM) [17][18][19][20][21][22][23]. Until now, it is applied to solving multilayered electromagnetic problems [18], grounding systems [19], as well as electromagnetic field determination in the vicinity of cable terminations [20].…”

Section: Introductionmentioning

confidence: 99%

Application of hybrid boundary element method to 2D microstrip lines analysis

Perić

Ilić

Aleksić

et al. 2013

International Journal of Applied Electromagnetics and Mechanics

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The hybrid boundary element method is applied for the calculation of the characteristic impedance of 2D microstrip lines with a finite width dielectric layer and with finite width or infinite ground planes. Even though these forms of microstrips are very typical in practice, they have not been investigated very often. The basic idea of this method is that an arbitrary shaped electrode can be replaced by equivalent electrodes, and an arbitrary shaped boundary surface between any two dielectric layers can be replaced by discrete equivalent total line charges placed in the air. The discretization technique is similar to the method of moments and is well known. As a contribution to the boundary element method, we combine it with the equivalent electrodes method, creating in that way a new hybrid boundary element method. This method could be applied to a large variety of very complex 2D problems, regarding microstrip lines with or without symmetry. The quasi TEM analysis is applied. We compare values of characteristic impedance obtained applying our method with the corresponding ones obtained by the finite element method and values already reported in the literature. Relative error less than 0.5%, fast convergence of the results and several times shorter computation time comparing to the time required by finite element method make our method very efficient in the calculation of parameters of 2D microstrip lines.

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“…Until now, this method is applied to solving multilayered electromagnetic problems , grounding systems (Ilić et al, 2010a), electromagnetic field determination in the vicinity of cable terminations (Raičević et al, 2010b), as well as calculating strip line parameters when the strip line is above the infinite-width grounded plane . The HBEM can be also applied to analysis of corona effects (Petković et al, 2011) and metamaterial structures (Raičević & Ilić, 2009). The method efficiency and accuracy was confirmed in Raičević et al (2010a) by comparing the obtained and experimental results and the finite-element method (FEM) results from Pokryvailo et al (2010).…”

Section: Introductionmentioning

confidence: 99%

Hybrid Boundary Element Method and Quasi-TEM Analysis of Two-Dimensional Transmission Lines—Generalization

et al. 2013

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The hybrid boundary element method, based on the equivalent electrodes method and the boundary element method, is presented in this article. This method is applied on several examples for calculating the characteristic impedance of transmission lines. It should be emphasized that the combination of the equivalent electrodes method and a new variant of the boundary element method can be efficiently implemented in quasi-transverse electromagnetic analysis of transmission lines without loss of accuracy. All results for the characteristic impedance of the observed transmission lines are compared to corresponding ones obtained by the finite-element method.

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A Novel Approach to the Positive DC Nonlinear Corona Design

Cited by 5 publications

References 9 publications

Optimal selection of coaxial ring systems in environmental electrostatic shielding

Optimal selection of coaxial ring systems in environmental electrostatic shielding

Application of hybrid boundary element method to 2D microstrip lines analysis

Hybrid Boundary Element Method and Quasi-TEM Analysis of Two-Dimensional Transmission Lines—Generalization

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