Results 101 to 110 of about 24,259 (317)

Wavelet denoising of partial discharge signals and their pattern classification using artificial neural networks and support vector machines

Dyna, 2017
This paper presents two pattern recognition approaches using Partial Discharges fingerprints as input features to classify PD patterns. A multi-layer perceptron (MLP) backpropagation neural network and a support vector machine (SVM) were trained to ...
Ian Carlo Guzmán, Jose Luis Oslinger, Ruben Darío Nieto   +2 more
doaj   +1 more source

Advanced Separators for Liquid and Quasi‐Solid Lithium Rechargeable Batteries: Design and Development

Advanced Materials, EarlyView.
This review traces the evolution of lithium‐ion battery separators from passive barriers to multifunctional components central to cell safety and performance. Polymer‐ceramic hybrids, nanofiber architectures, and bio‐derived membranes deliver ionic conductivities above 3 mS cm−1, thermal stability beyond 200 °C, and effective suppression of lithium ...
Karthik Vishweswariah, Ningaraju Gejjiganahalli Ningappa, Anil Kumar M. R., Jeremy I. G. Dawkins, Thiago M. G. Selva, Karim Zaghib   +5 more
wiley   +1 more source

Coherent Electro-Thermal Qualification of the Insulation System for Electrical Machines

IEEE Access
Qualification of inverter-fed electrical machines through the procedure suggested in the IEC std. 60034-18-41 entails the application of thermal, mechanical, and ambient stresses, followed by measuring partial discharges (PD-proof test).
A. Rumi, L. Zanotti, A. Cavallini, P. Seri   +3 more
doaj   +1 more source

Design parameter based method of partial discharge detection and location in power transformers [PDF]

, 2009
Insulation defect detection in time ensures higher operational reliability of power system assets. Power transformers are the most critical unit of power systems both from economical and operational front.
Gupta Prakash Ram, Kumar Santosh Annadurai, Udayakumar Kodhandaraman, Venkatasami Athikkan   +3 more
core   +1 more source

Exploring the Potential of Zero‐Dimensional Carbon Nanomaterials in Photoluminescent, Electrochemiluminescent and Electrochemical Sensors

Advanced Materials Interfaces, EarlyView.
Zero‐dimensional carbon nanomaterials are presented as multifunctional platforms linking structure, property, and sensing performance. Surface engineering and heteroatom doping modulate electron‐transfer and luminescent behavior, enabling electrochemical, photoluminescent, and electrochemiluminescent detection. Fundamental design principles, analytical
Gustavo Martins, Jeferson Luiz Gogola, Ava Gevaerd, Cristiane Kalinke, Paulo Roberto de Oliveira, Fabio Roberto Caetano, Bruno Campos Janegitz, Márcio Fernando Bergamini, Luiz Humberto Marcolino‐Junior   +8 more
wiley   +1 more source

Shielding effect of power transformers tanks in the ultra-high-frequency detection of partial discharges [PDF]

, 2013
Partial discharges (PD) measurement is a well-known technique for judgment of the condition of power transformer offline. Phase-resolved PD measurement is a normalized technique for PD tests, but noise, especially by PD-measurements onsite is sometimes ...
Albarracín Sánchez, Ricardo, Martínez Tarifa, Juan Manuel, Robles Muñoz, Guillermo   +2 more
core   +3 more sources

Hybrid Magnetoactive Soft Elastomers: Material Development Toward Application in Diaphragm Pumps

Advanced Materials Technologies, EarlyView.
Hybrid magnetoactive soft elastomeric membranes are developed by combining two different types of magnetic particles. The membranes exhibit distinct mechanical, magnetic and thermal properties owing to the unique characteristics of the two magnetic particles.
Somashree Mondal, Paweł Orkisz, Bogdan Sapiński, Ralph Spolenak, Frank Clemens   +4 more
wiley   +1 more source

Partial discharge and interference discrimination in gas-insulated systems using electric and magnetic sensors

International Journal of Electrical Power & Energy Systems
The correct identification of partial discharges (PDs) is instrumental for the maintenance plan in gas-insulated systems (GIS). However, onsite PD measurements are difficult, especially in HVDC systems, where partial discharges can be confused with ...
Christian Mier, Armando Rodrigo Mor, Tianming Luo, Peter Vaessen   +3 more
doaj   +1 more source

Detection Technique of Partial Discharges at Impulse Voltage with Appropriate Filter Settings for Signal Separation

Energies, 2019
Due to the increased utilization of electric converters feeding rotating high voltage motors, their insulation is subject to transient impulse and high frequency oscillating voltages.
Karsten Backhaus, Lena Elspaß, Konstantin Pasche   +2 more
doaj   +1 more source

Rough set theory applied to pattern recognition of partial discharge in noise affected cable data [PDF]

, 2016
This paper presents an effective, Rough Set (RS) based, pattern recognition method for rejecting interference signals and recognising Partial Discharge (PD) signals from different sources.
Hepburn, Donald M., Judd, Martin D., Li, Zhaohui, Peng, Xiaosheng, Reid, Alistair, Siew, W. H., Wen, Jinyu, Yang, Guangyao, Zhou, Chengke   +8 more
core   +4 more sources