Results 231 to 240 of about 201,100 (277)

Study of conduction mechanism, electrical property, and nonlinear electrical behaviors of Ba0.97Bi0.02Ti0.9Zr0.05Nb0.04O3 perovskite

Journal of Materials Science: Materials in Electronics, 2020
The conduction mechanism, electric properties, and I–V behavior of the polycrystalline Ba0.97Bi0.02Ti0.9Zr0.05Nb0.04O3 (BBTZN) ceramic analyzed as a function of frequency and temperature. The relaxation phenomena were studied with impedance and modulus formalism, while the conductivity mechanism was investigated using electrical conductivity.
Zeineb Raddaoui, Rim Lahouli, Safwen El Kossi, Jemai Dhahri, Hafedh Belmabrouk, Abdullah Bajahzar   +5 more
openaire   +1 more source

Characterizing Nonlinear Field Dependent Conductivity Layers to Mitigate Electric Field Within (U)WBG Power Modules Under High Frequency, High Slew Rate Square Voltage Pulses

2024 IEEE Texas Power and Energy Conference (TPEC)
A vast majority of research on (U)WBG power modules has been going on to implement nonlinear resistive field grading material on metal-brazed substrates in reducing the electric field that is maximum at triple points (TPs).
Pujan Adhikari, Mona Ghassemi
semanticscholar   +1 more source

Nonlinear dielectric response and conductivity characteristics of epoxy resin in high voltage AC electric field

Journal of Physics D: Applied Physics
High-voltage dielectric and AC conduction behaviors of epoxy resin (EP) insulation are beneficial for the design and application of solid-state power electronic devices.
Weiwang Wang, Ruizhe Li, Leiyu Hu, Qihang Jiang, Shengtao Li   +4 more
semanticscholar   +1 more source

Characterization of a Nonlinear Resistive Polymer-Nanoparticle Composite Coating for Electric Field Reduction in a Medium-Voltage Power Module

IEEE transactions on power electronics, 2022
Medium-voltage (MV) silicon carbide power devices are emerging and have the potential to serve in various power grid applications. However, the high blocking voltage and reduced size of the power modules require innovative insulation solutions.
Zichen Zhang, K. Ngo, G. Lu
semanticscholar   +1 more source

Self‐Adaptive Dielectrics with Tunable Nonlinear Electrical Conductivity via Virus‐Like Structures Composed of Metal Particles

Advances in Materials
Self‐adaptive dielectrics (SADs), with the characteristics of rapid charge dissipation in electric field distortion, is regarded as the future material for package insulation of advanced electronic devices.
Daoming Zhang, Congzhen Xie, Huasong Xu, An Zhong, Jiangang Zhou, Chunhui Bi, B. Gou, Hangchuan Cai, Rui Wang   +8 more
semanticscholar   +1 more source

The Effect of Type of Voltage (Sinusoidal and Square Waveform) and the Frequency on the Performance of Nonlinear Field-Dependent Conductivity Coatings for Electric Field Control in Power Electronic Modules

Conference on Electrical Insulation and Dielectric Phenomena, 2019
In this paper, it is shown that nonlinear field-dependent conductivity (FDC) material as a coating layer applied to the high electric field regions in combination with two geometrical techniques known as 1) stacked substrate, and 2) protruding substrate,
M. Tousi, M. Ghassemi
semanticscholar   +1 more source

Effect of Mechanical Stretching on Nonlinear Conductivity and Dielectrics Breakdown Strength of SiR/SiC Composites

IEEE transactions on dielectrics and electrical insulation, 2021
This paper focuses on the effects of mechanical stretching on nonlinear conductivity and dielectrics breakdown in silicone rubber (SiR)/SiC composites for HVDC prefabricated cable joints.
B. Du, C. Han, Z. L. Li
semanticscholar   +1 more source

Nonlinear electrical conductivity of metallic microcontacts in an alternating electric field

Soviet Journal of Low Temperature Physics, 1983
The problem of the behavior of a point contact between normal metals in an alternating electric field with arbitrary frequency and amplitude is solved using the technique of quasiclassical energy-integrated Green's functions. The nonlinear components of the current due to the electron-phonon interaction are obtained.
A. N. Omel'yanchuk, I. G. Tuluzov
openaire   +1 more source

Nonlinear Field Dependent Conductivity Materials for Electric Field Control within Next-Generation Wide Bandgap Power Electronics Modules

Electrical Insulation Conference, 2019
We are witnessing an excitement in the research community to develop next-generation wide bandgap (WBG) power electronics. The superior characteristics of WBG materials regarding their operational capability at higher voltages, temperatures (200°C) and ...
M. Tousi, M. Ghassemi
semanticscholar   +1 more source

Theory of nonlinear electrical conductivity via integral Boltzmann equation

Il Nuovo Cimento B, 1978
An integral transport theory for determining the distribution function of test particles, which diffuse in the presence of an external conservative force in a system of field particles, is proposed. How—for the case in which the test particles are taken to be electrons—the validity of Ohm’s law can be checked and the subsequent evaluation of electrical
V. C. Boffi, V. G. Molinari, W. Wonneberger   +2 more
openaire   +1 more source