Results 31 to 40 of about 24,218,867 (287)

Space Charge Transport Characteristic Considering the Non-Uniform Electric Effect of Ion Mobility

IEEE Access, 2020
Oil-paper insulation is the main insulating medium of converter transformers. Space charge can result in the distortion of electric field in oil-paper insulation, hence it's necessary to analyze the space charge transport characteristic and its influence
Zhaoxiang Zhang, Kai Yang, Cheng Chi, Fan Yang, Li Liu, Shaohua Wang   +5 more
doaj   +1 more source

Raman Spectral Characteristics of Oil-Paper Insulation and Its Application to Ageing Stage Assessment of Oil-Immersed Transformers

Energies, 2016
The aging of oil-paper insulation in power transformers may cause serious power failures. Thus, effective monitoring of the condition of the transformer insulation is the key to prevent major accidents.
Jingxin Zou, Weigen Chen, Fu Wan, Zhou Fan, Lingling Du   +4 more
doaj   +1 more source

Life cycle of transformer oil [PDF]

Hemijska Industrija, 2008
The consumption of electric power is constantly increasing due to industrialization and population growth. This results in much more severe operating conditions of transformers, the most important electrical devices that make integral parts of power ...
Đurđević Ksenija R., Vojinović-Miloradov Mirjana, Sokolović Slobodan M.   +2 more
doaj   +1 more source

Influence of Ester Liquids on Dielectric Strength of Cellulose Kraft Paper

Energies, 2022
Generally, impregnation of solid insulation is performed to increase the dielectric strength and reduce the dielectric losses of solid insulants. This increase in dielectric strength depends on the oil’s diffusion and dielectric properties.
Gottapu Tirupati Naidu, Ungarala Mohan Rao, Sudabattula Suresh   +2 more
doaj   +1 more source

Modified Expression of Moisture Diffusion Factor for Non-Oil-Immersed Insulation Paper

IEEE Access, 2019
Studying the moisture diffusion in non-oil-immersed insulation paper is helpful to optimize the drying process and improve the drying efficiency of oil-immersed equipment.
Dongyang Wang, Lijun Zhou, Lujia Wang, Lei Guo, Wei Liao   +4 more
doaj   +1 more source

Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies

Advanced Functional Materials, EarlyView.
Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke, Hattie R. Chisnall, Jesus Vazquez Chavez, Ana B. Jorge Sobrido   +3 more
wiley   +1 more source

Digitally Printed Eco‐Friendly Electronic Devices

Advanced Functional Materials, EarlyView.
Fabrication of electronics using eco‐friendly materials through digital printing routes is a promising strategy for improving life cycle sustainability and reducing the environmental impacts of conventional manufacturing. This review highlights state‐of‐the‐art eco‐friendly materials, green ink formulations, various resource‐efficient digital printing ...
Nitheesh M. Nair, Mikel Rincón‐Iglesias, Cristian Mendes‐Felipe, Fatemeh Etehadi, Senentxu Lanceros‐Méndez, Gerardo Hernandez‐Sosa   +5 more
wiley   +1 more source

Assessment of Long Thermal Ageing on the Oil-Paper Insulation

Advances in Electrical and Electronic Engineering, 2016
Electric power equipment has complex construction. Therefore, it is very important to have enough information about the state of equipment. High voltage transformers play a very important role in the electric power system. One of the most important parts of electric power equipment is the insulation system. Insulation system must be in a good condition
Iraida Kolcunova, Marek Pavlik, Lukas Lison   +2 more
openaire   +2 more sources

Biodegradable Conductors for Implantable and Wearable Transient Bioelectronics

Advanced Functional Materials, EarlyView.
Biodegradable conductors are essential building blocks for transient bioelectronics, enabling temporary sensing, stimulation, and energy transfer while eliminating the need for device retrieval. This review summarizes biodegradable metals, conducting polymers, ionic conductors, and conductive composites, highlighting degradation mechanisms, material ...
Yicheng Zhu, Yijun Liu, Naoji Matsuhisa
wiley   +1 more source

Ultra‐White Elastomeric Coatings for Daytime Radiative Cooling

Advanced Materials Technologies, EarlyView.
Passive daytime radiative cooling meets elasticity in a new class of ultra‐white silicone coatings. Combining high solar reflectance with strong sky‐window emission, they hold surfaces below ambient temperature under full sunlight while remaining flexible and stretchable. This combination of cooling performance and mechanical flexibility enables energy‐
Abdulrahman Aljwirah, Xiaojie Liu, Khalid Alhammadi, Orlando G. Rivera Gonzalez, Won‐June Lee, Xiulin Ruan   +5 more
wiley   +1 more source