Characterization of Silicone Elastomers for Refractive Field Grading under Sinusoidal Voltages
DOI:
https://doi.org/10.5324/nordis.v27i1.4723Abstract
This contribution compares three different numerical approaches to characterize a nonlinear field dependent
permittivity when stressed with a sinusoidal voltage. Silicone elastomers with refractive field grading properties serve as test samples. Their dielectric properties such as the DC-conductivity and the complex permittivity are determined experimentally and applied to compute the numerical models. Principally, all three models apply the J-E relationship to quantify the nonlinear permittivity, different numerical methods are however implemented to solve the models. The numerical approaches are compared with experimental results and analysed. Based on the results, the most suitable numerical method to determine the nonlinear permittivity could be determined. This model serves as a fundamental approach for sinusoidal voltages and can be further adapted for non-sinusoidal voltages in the future.
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Copyright (c) 2022 Jun Ting Loh, Stefan Kornhuber
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