Assessment of a Charge Transport Model for LDPE through Conduction Current Measurement

  • Anggie Chandra Kusumasembada Department of Electrical Engineering, Bandung Institute of Technology, Bandung, Indonesia
  • Gilbert Teyssedre LAPLACE (Laboratoire Plasma et Conversion d’Energie), Université de Toulouse, France
  • Severine Le Roy LAPLACE (Laboratoire Plasma et Conversion d’Energie), Université de Toulouse, France
  • Laurent Boudou LAPLACE (Laboratoire Plasma et Conversion d’Energie), Université de Toulouse, France
  • Ngapuli Irmea Sinisuka Department of Electrical Engineering, Bandung Institute of Technology, Bandung, Indonesia
Keywords: LDPE, conduction current, charge transport

Abstract

Conduction current measurements have been widely used to characterize charge transport behavior in insulating materials. However, the interpretation of transport mechanisms and more generally of non-linear processes from current measurements alone is not straightforward. For this reason, space charge measurements, on the one hand, and models of charge transport encompassing charge generation, trapping and transport have been developed. The completeness and accuracy of a model can be assessed only if a substantial range of stress conditions, being field and temperature for the current topics, is available. The purpose of this communication is to enrich the investigation of low density polyethylene - LDPE insulation material characteristic using conduction current measurement. Measurements were conducted on 250 μm thick LDPE samples, for DC fields in the range 2 to 50 kV/mm and for temperatures from 20 to 70°C. Experimental data, i.e. transient current in charge/discharge and quasi-steady state currents are compared to the prediction of a bipolar transport model that has been developed over the last years and fitted to the case of LDPE. The deviation of model results is substantial, with essentially an overestimation of the non-linearity of the current-field dependence. These differences are discussed along with prospects from improving the model. Aside from these modelling approaches, we show that thermal preconditioning of samples appears to be influential in the measured apparent conductivity.

References

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Published
2017-01-01
How to Cite
[1]
A. C. Kusumasembada, G. Teyssedre, S. L. Roy, L. Boudou, and N. I. Sinisuka, “Assessment of a Charge Transport Model for LDPE through Conduction Current Measurement”, Adv. technol. innov., vol. 2, no. 1, pp. 1-7, Jan. 2017.
Issue
Vol 2 No 1 (2017): January
Section
Articles

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