Results 31 to 40 of about 39,984 (299)

PHASE GRADIENT METHOD OF MAGNETIC FIELD MEASUREMENTS IN ELECTRIC VEHICLES [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2013
Operation of electric and hybrid vehicles demands real time magnetic field control, for instance, for fire and electromagnetic safety. The article deals with a method of magnetic field measurements onboard electric cars taking into account peculiar ...
N. G. Ptitsyna   +3 more
doaj  

Fast Optimization of the Installation Position of 5G-R Antenna on the Train Roof

open access: yesApplied Sciences
In this paper, a prediction model of the coupling coefficient based on a multi-module neural network (MMNN) is developed to quickly optimize the installation position of the roof antenna of the 5G-Railway (5G-R) communication system, so as to improve the
Yu Bai, Jie Ren, Yinghong Wen
doaj   +1 more source

Controlled Electromagnetic Field Based Safety System for Handheld Circular Saw [PDF]

open access: yes, 2022
This paper presents the design of a safety system based on controlled electromagnetic field (CEMF) sensing technology to prevent accidents caused by power tools, especially related to handheld circular saws.
Fernando Muñoz-Chavero   +18 more
core   +1 more source

Metasurface for Near-Field Wireless Power Transfer With Reduced Electric Field Leakage

open access: yesIEEE Access, 2020
Wireless power transfer is a breakthrough technology which can be used in all aspects of humans daily life. Here, a bi-layer metasurface as a transmitter for near-field wireless power transfer is proposed and studied.
Aleksandr Markvart   +5 more
doaj   +1 more source

Experimental Study on the Discharge Characteristics of a Dripping ‘Rod–Plane’ Air Gap at High Altitude Under DC Voltages

open access: yesEnergies
High-voltage transmission and substation projects at high altitudes are pivotal in realizing the objective of universal electricity access. However, the reduced air density at elevated heights facilitates the formation and propagation of discharges ...
Chuyan Zhang   +5 more
doaj   +1 more source

From 2G to 5G Spatial Modeling of Personal RF-EMF Exposure Within Urban Public Trams

open access: yesIEEE Access, 2020
The upcoming design and implementation of the new generation of 5G cellular systems, jointly with the multiple wireless communication systems that nowadays coexist within vehicular environments, leads to Heterogeneous Network challenging urban scenarios.
Mikel Celaya-Echarri   +5 more
doaj   +1 more source

Computation of 3-D Electric Field on Buildings of Arbitrary Shape Near HVDC Transmission Lines

open access: yesIEEE Access, 2023
Electrical environment of residences adjacent to Ultra high voltage direct current (UHVDC) transmission lines draws huge attentions as it affects people’s lives.
Po Long, Guocai Zuo, Kun He, Li Xie
doaj   +1 more source

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

open access: yesAdvanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele   +2 more
wiley   +1 more source

Integrated Learning‐Based Ageing Assessment of Silicone Rubber

open access: yesHigh Voltage
The surface ageing of silicone rubber composite insulators, widely used in power systems, poses significant challenges. This study integrates Fourier transform infrared (FTIR) spectroscopy with machine learning to evaluate ageing states and explore ...
Xinzhe Yu   +7 more
doaj   +1 more source

Evaluation of Field-Diffusion Charging Models for Airborne Suspended Particles Charged by Corona Ions: Sum of Charge Quantities and Sum of Charging Rates

open access: yesCSEE Journal of Power and Energy Systems
To evaluate field-diffusion charging models, a systematic comparative study is conducted in this paper. A field-diffusion charge quantity sum model (FDCQSM) and a field-diffusion charging rate sum model (FDCRSM) are introduced in which the Maxwell-Wagner
Kun He   +5 more
doaj   +1 more source

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