Results 21 to 30 of about 10,144,462 (296)

ASSESSMENT OF THE IMPACT EXCITATION CURRENT PARAMETERES OF THE SYNCHRONOUS GENERATOR ON THE INDICATORS OF QUALITY OF THE PRODUCED ELECTRIC ENERGY

open access: yesВестник Северо-Кавказского федерального университета, 2022
The article discusses issues related to the impact of excitation current parameters of a synchronous machine and of possible emergencies in the field windings on the level of the quality of the generated electrical energy.
Pavel Zvada   +2 more
doaj  

Predicting Iron Losses in Laminated Steel with Given Non-Sinusoidal Waveforms of Flux Density

open access: yesEnergies, 2015
In electrical machines, iron losses are essential for electromagnetic and thermal designs and analyses. Although many models have been proposed to predict iron losses in magnetic materials, the calculation of iron losses under non-sinusoidal excitations ...
Wei Chen   +3 more
doaj   +1 more source

Non-Sinusoidal Bending Waves of Sperm Flagella* [PDF]

open access: yesJournal of Experimental Biology, 1965
ABSTRACT Photomicrographs giving greater resolution than previously available have been obtained for the spermatozoa of a sea urchin, a tunicate, and an annelid. The bending waves are not sine waves. They contain circular arcs, in which the amount of bending is constant, separated by shorter regions which are nearly straight.
openaire   +2 more sources

A Self-Learning Solution for Torque Ripple Reduction for Non-Sinusoidal Permanent Magnet Motor Drives Based on Artificial Neural Networks [PDF]

open access: yes, 2013
This paper presents an original method, based on artificial neural networks, to reduce the torque ripple in a permanent-magnet non-sinusoidal synchronous motor.
WIRA, Patrick   +7 more
core   +1 more source

Numerical Study on the Effect of Non-Sinusoidal Motion on the Energy Extraction Performance of Parallel Foils

open access: yesApplied Sciences, 2019
The effect of non-sinusoidal motion which influences the energy extraction performance of foil is considered in this paper. Two oscillation motions, the combined non-sinusoidal plunging and sinusoidal pitching motion, as well as the combined non ...
Yulu Wang, Fahui Zhu, Yonghui Xie
doaj   +1 more source

Investigation of Non-Sinusoidal Oscillator Driven by Double Servomotors for Continuous Casting Mold

open access: yesIEEE Access, 2020
To improve the surface quality and casting speed of the slab further, a new type mold oscillator synchronously driven by double servomotors was proposed in this paper. The experimental prototype was designed and manufactured.
Chao Zhou   +3 more
doaj   +1 more source

Non-Zero Crossing Point Detection in a Distorted Sinusoidal Signal Using Logistic Regression Model

open access: yesComputers, 2022
Non-Zero crossing point detection in a sinusoidal signal is essential in case of various power system and power electronics applications like power system protection and power converters controller design.
Venkataramana Veeramsetty   +2 more
doaj   +1 more source

The modeling and analysis of the parameters of the non-sinusoidal modes

open access: yesJournal of Physics: Conference Series, 2021
Abstract The article is devoted to the analysis of the parameters of the non-sinusoidal modes. These parameters include the components of the total apparent power in the presence of the voltage and current harmonics such as the voltage distortion power, the current distortion power, the harmonic distortion power, the fundamental apparent
Yu A Sychev, V B Prokhorova, M E Aladin
openaire   +1 more source

Analysis of the influence of non-sinusoidal and unbalanced network modes on induction motors [PDF]

open access: yesE3S Web of Conferences, 2021
The parameters of electrical network modes do not correspond the requirements GOST 32144-2013 of Russian and the National technical regulation of Vietnam.
Van Cuong Ngo, Kovernikova Lidiia I.
doaj   +1 more source

Enhancement of Sensorless Control for Non-Sinusoidal Multiphase Drives-Part I: Operation in Medium and High-Speed Range

open access: yesEnergies, 2022
This two-part study proposes a new sensorless control strategy for non-sinusoidal multiphase permanent magnet synchronous machines (PMSMs), especially integrated motor drives (IMDs).
Youssouf Mini   +3 more
doaj   +1 more source

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