Results 91 to 100 of about 153,268 (299)

Criterion and Delay Optimization of Circuit Breaker Failure Protection Based on Tail Current Recognition

open access: yesZhongguo dianli
When the circuit breaker acts, the current on the primary side of the current transformer suddenly decreases, and the inductive effect will form a tail current on secondary side, which will cause the time of return of the failure protection to be too ...
Xiangwen CHEN   +7 more
doaj   +1 more source

New trends in active filters for improving power quality [PDF]

open access: yes, 1995
Since their basic compensation principles were proposed around 1970, active filters have been studied by many researchers and engineers aiming to put them into practical applications.
Akagi, Hirofumi
core   +1 more source

4D Mapping of ZIF Biocomposites for High Protein Loading and Tunable Release Profiles

open access: yesAdvanced Functional Materials, EarlyView.
Systematic four‐dimensional mapping of zeolitic imidazolate framework biocomposites reveals how precursor ratios, total concentration, and washing define crystalline phase, protein loading, and release kinetics. This comprehensive study identifies conditions yielding record loading (∼85%) and precise phase–property correlations.
Michael R. Hafner   +12 more
wiley   +1 more source

Energy Harvesting from the Stray Electromagnetic Field around the Electrical Power Cable for Smart Grid Applications

open access: yesThe Scientific World Journal, 2016
For wireless sensor node (WSN) applications, this paper presents the harvesting of energy from the stray electromagnetic field around an electrical power line. Inductive and capacitive types of electrodynamic energy harvesters are developed and reported.
Farid Ullah Khan
doaj   +1 more source

Leakage Inductance Effects of Output Transformer on Current-Resonant Parallel Converter Characteristics

open access: yesIEEE Translation Journal on Magnetics in Japan, 1991
The effects of leakage inductance of the output transformer of a current-resonant parallel converter on the latter's characteristics were studied through simulations and experiments. As a parasitic resonance appears between the leakage inductance and the resonance circuit capacitor during the commutating period of the output rectifying circuit every ...
openaire   +2 more sources

A novel inductive electromagnetic energy harvester for condition monitoring sensors [PDF]

open access: yes, 2010
As the operation of electrical power networks becomes increasingly sophisticated, the role of condition monitoring is expanding. The burden of implementing additional condition monitoring will be eased if self-powered, fully autonomous sensors can be ...
Fraser, Leigh   +2 more
core  

New Experimental Method for Investigating AC-losses in Concentric HTS Power Cables

open access: yes, 2015
The optimization of a HTS cable design with respect to AC-losses is of crucial importance for the economic viability of the respective concept. However the experimental determination of AC-losses is not straightforward since for short cable samples the ...
Demencik, Eduard   +8 more
core   +2 more sources

High‐Yield Synthesis of Fe‐NC Electrocatalysts Using Mg2+ Templating and Schiff‐Base Porous Organic Polymers

open access: yesAdvanced Functional Materials, EarlyView.
Fe─NC porous oxygen reduction electrocatalysts are prepared employing a 2,4,6‐Triaminopyrimidine‐based porous organic polymer, a Mg2+ Lewis acid, and a low‐temperature cation exchange protocol. Using the polymer precursor achieves high pyrolysis yields and results in atomically dispersed FeNx sites. The resulting catalysts feature hierarchical porosity
Eliot Petitdemange   +11 more
wiley   +1 more source

Analytical Model of a High-Frequency Rotary Transformer

open access: yesIEEE Access
The permanent magnet synchronous motors are widely used for the propulsion of electric vehicles. These motors have good performance, but result expensive because the permanent magnets installed on their rotor contain rare earths.
Manuele Bertoluzzo   +2 more
doaj   +1 more source

A Research on Training Method for Diffusion Model Based on Neighborhood Attention [PDF]

open access: yesJisuanji gongcheng
Generative diffusion models can learn to generate data. They progressively denoise and generate new data samples based on input Gaussian noise; therefore, they are widely applied in the field of image generation.
JI Lixia, ZHOU Hongxin, XIAO Shijie, CHEN Yunfeng, ZHANG Han
doaj   +1 more source

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