Results 21 to 30 of about 60,411 (268)

Functional Control Synthesis of Single-Phase Low Power Motor Drives [PDF]

EAI Endorsed Transactions on Energy Web, 2019
In the paper an electric drive system of series-wound universal motor powered by semiconductor converter is considered. The system characteristics and calculation procedure using spectral method of Solodovnikov and aligning procedure are shown.
Yu. Dementyev, N. Koyain, A. Meshkov, Min Aung, V. Susdorf, A. Umurzakova   +5 more
doaj   +1 more source

A mathematical model of the three-phase AC to DC voltage converter with threezone voltage control

Adaptivni Sistemi Avtomatičnogo Upravlinnâ, 2023
The article focuses on electromagnetic processes in electric circuits with semiconductor switches. A mathematical model of a semiconductor converter with three-zone output voltage control has been created so as to analyse electromagnetic processes in ...
В. Михайленко, Г. Міхненко, Є. Троценко, В. Святненко, Ю. Чуняк, O. Петрученко, В. Бачинський   +6 more
doaj   +1 more source

MATHEMATICAL MODEL OF SEMICONDUCTOR CONVERTER WITH FIVE-ZONE REGULATION OF THE OUTPUT VOLTAGE AND ELECTROMECHANICAL LOAD

Nauka ta progres transportu, 2014
Purpose. This work is directed on study of the electromagnetic processes in electric circuits with semiconductor commutators. It is necessary to develop the new mathematical models of functions determination and algorithmic equations for analysis of ...
V. V. Mikhailenko, S. A. Аbdulaiev, V. V. Ernst, V. V. Chupak   +3 more
doaj   +1 more source

Uncertainty quantification in electromagnetic observables of nuclei

Frontiers in Physics, 2023
We present strategies to quantify theoretical uncertainties in modern ab initio calculations of electromagnetic observables in light and medium-mass nuclei. We discuss how uncertainties build up from various sources, such as the approximations introduced
Bijaya Acharya, Bijaya Acharya, Sonia Bacca, Sonia Bacca, Francesca Bonaiti, Simone Salvatore Li Muli , Joanna E. Sobczyk   +6 more
doaj   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

A Practical Noise2Noise Denoising Pipeline for High‐Throughput Raman Spectroscopy

Advanced Engineering Materials, EarlyView.
A lightweight and reproducible denoising pipeline for high‐throughput Raman spectroscopy is introduced, based on a 1D convolutional autoencoder trained with a Noise2Noise strategy. Using only repeated short‐exposure acquisitions, the method suppresses stochastic noise without reference spectra, enabling reliable spectral reconstruction while preserving
David Martin‐Calle, Cesar Alvarez‐Llamas, Vincent Motto‐Ros, Christophe Dujardin, Jérémie Margueritat, David Rodney   +5 more
wiley   +1 more source

Analysis of Electromagnetic and Thermal Processes of an Induction Motor Using 3D Modeling

Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика
The results of research and analysis of electromagnetic and thermal processes taking place in an induction motor are presented. Information is presented on the creation of a design model of an auxiliary induction motor with various parameters according ...
A. N. Pekhota, V. N. Galushko, B. M. Khrustalev, D. V. Mirosh   +3 more
doaj   +1 more source

Study of the electromagnetic processes in a converter wirh four zoned regulations of the voltage

Adaptivni Sistemi Avtomatičnogo Upravlinnâ, 2023
The article focuses on electromagnetic processes in electric circuits with semiconductor switches. A mathematical model of a semiconductor converter with four-zone output voltage control has been created so as to analyse electromagnetic processes in ...
V. Mykhailenko, J. Chunyak, O. Geraskin, M. Kovalevskiy   +3 more
doaj   +1 more source