Yasuhiro Tanaka

TL;DR: In this paper, the authors compared electric potential wells produced by a permanent dipole moment such as that of carbonyl groups (C=0) and an induced dipole consisting of MgO nanoparticles (spherical dielectrics) under a high electric field to create a trapping site for electric charge carriers.

TL;DR: In this paper, a pulsed electroacoustic (PEA) method was used to study the relationship between the space charge and the breakdown of low-density polyethylene (LDPE) at and around the breakdown.

TL;DR: In this paper, the influence of the interface between electrode and polymer or polymer and polymer on the space charge dynamics has been studied, and it has been found that the types of interface between polymer and electrode play a significant role in determining the charge distribution in the insulation.

TL;DR: A comprehensive experimental investigation of XLPE and its nanocomposite with fumed silica (SiO2) has been performed by CIGRE Working Group D1.24, in cooperative tests conducted by a number of members; covering materials characterization, real and imaginary permittivity, dc conductivity, space charge formation, dielectric breakdown strength, and partial discharge resistance as discussed by the authors.

TL;DR: In this paper, a 3D electrostatic potential distribution map was obtained for positively and negatively charged polymers to determine the relationship between a trapping site and the charge accumulation center in the 3D potential distribution maps.