Results 91 to 100 of about 4,341 (292)
Definition defects of transformer equipment using frequency diagnostic parameters [PDF]
, 2017 Метою статті є дослідження пошкоджуваності силових трансформаторів, методів і засобів визначення їх технічного стану. Представлені результати досліджень пошкоджуваності силових трансформаторів, які показують, що значна частина таких пошкоджень є дефекти ...
Грищук, Максим Олександрович +2 more
core +1 more source
Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions
Advanced Functional Materials, EarlyView.DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng +7 more
wiley +1 more source
Análisis de la respuesta en frecuencia como herramienta de evaluación de las pruebas de impulso en transformadores [PDF]
, 2005 El criterio de aceptación o rechazo de las pruebas de impulso en transformadores de potencia y de medida de tensión e intensidad, aplicadas según normas internacionales, consiste en comparar los oscilogramas obtenidos de la aplicación de impulsos ...
Valecillos, Baudilio
core +1 more source
A practical circuit model of high frequency transformers in power electronic systems [PDF]
, 2007 This paper presents a practical circuit model of high frequency transformers in power electronic systems. All types of core losses (ie. the hysteresis, classical eddy current and anomalous losses) are included in the model. the thermal effect on magnetic
Guo, YG, Hui, SYR, Lu, HY, Zhu, JG
core +1 more source
Advanced Functional Materials, EarlyView.Coating the standard polypropylene separator with a porous red phosphorous nanosheet greatly improves cycling performance in Li electrode cells. The phosphorus‐based surface chemistry deactivates electrolyte solvent decomposition and enhances the cleavage of F‐containing salt, resulting in an inorganic‐dominated electrolyte interphase (SEI) composition
Jiangpeng Wang +9 more
wiley +1 more source
Real-time diagnosis of high-speed rail traction transformer in different topologies
The Journal of Engineering, 2019 High-speed railway (HSR) traction transformer, as a connection between traction power supply system and the power grid, is critical in electrified railway design, which requires a drastic change of traction load and frequent external short circuits.
Ming Tu +6 more
doaj +1 more source
Electromagnetic containerless processing requirements and recommended facility concept and capabilities for space lab [PDF]
Containerless melting, reaction, and solidification experiments and processes which potentially can lead to new understanding of material science and production of new or improved materials in the weightless space environment are reviewed in terms of ...
Bloom, H. L. +4 more
core +1 more source
Advanced Functional Materials, EarlyView.HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan +9 more
wiley +1 more source
Atomic Size Misfit for Electrocatalytic Small Molecule Activation
Advanced Functional Materials, EarlyView.This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong +3 more
wiley +1 more source