Electric fields at thermal maximum voltage (DC) in multi-layer dielectrics in plane-parallel geometry

Muppala, Purnabhishek; Reddy, C.C.

doi:10.1109/catcon.2017.8280240

Cited by 4 publications

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“…Hence, in this paper, a comprehensive mathematical formulation for cross linked polyethylene (XLPE) -Silicone rubber system (keeping in view of rubber block joint) is performed and the solutions for electric field, space charge and temperature distribution at normal, increasing and breakdown voltages as a function of boundary temperatures are presented as an extension to [8,9]. Experimental conduction and breakdown results of multi-layer samples are found to be in conformity with their corresponding theoretical predictions.…”

Section: Introductionmentioning

confidence: 69%

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Electric Field and DC Breakdown Voltage of Multi-layer Dielectrics in Parallel-Plane Geometry

Muppala

Reddy

2021

IEEE Trans. Dielect. Electr. Insul.

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In this paper, the electric field, space charge and temperature distributions across a double layered dielectric are investigated under DC voltage. The dissimilarity of material properties of different layers, the effect of electric field and temperature dependent conductivity are found to play critical role in the electro-thermal problem of multi-dielectrics. At the interface, Maxwell-Wagner polarization is incorporated for electric field and interfacial charge, while temperature is considered as a continuous function of space inside the material. The current continuity equation, thermal continuity equation and Poisson's equation are simultaneously solved using numerical methods in parallel-plane electrode geometry. The electric field distribution, temperature distribution, space charge distribution and thermal breakdown limits are obtained at various boundary temperatures for different thickness proportions of layers.

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Section: Introductionmentioning

confidence: 69%

“…At the interface between XLPE and rubber, Maxwell-Wagner-Sillars relationship is incorporated, which relates interfacial charge to electric fields at boundary, (9) Continuity of temperature as a function of space in turn leads to the interfacial thermal boundary condition for this problem: (10) Equations 3, 7, (8), (9) and 10…”

Section: Boundary Conditionsmentioning

confidence: 99%