Results 11 to 20 of about 40,475 (306)

Influence of Parameters on the Excitation Power of Third Harmonic Brushless Hybrid Excitation Generator

open access: yesEnergies
Hybrid-excited generators have a wide voltage regulation capability or a wide range of variable-speed constant-voltage output capability, providing a significant advantage in the new energy power generation field.
Yonghong Xia   +5 more
doaj   +2 more sources

HARMONIC ANALYSIS OF TORSIONAL VIBRATION FORCE EXCITATION [PDF]

open access: yesScientific Journal of Silesian University of Technology. Series Transport, 2017
In our department, we deal with various methods for the continuous tuning of torsional oscillating mechanical systems during their operation, mainly in terms of torsional vibration magnitude.
Matej URBANSKÝ
doaj   +2 more sources

Toward the possibility of 229Th isomeric nuclear state excitation by two-color laser field [PDF]

open access: yesEPJ Web of Conferences, 2019
The process of high harmonic generation (HHG) has a wide area of different applications, in particular, in nanoscale imaging, study the nanoscale energy transport in complex molecules and solids, probe the charge and spin dynamics with the femtosecond ...
Andreev Anatoli   +3 more
doaj   +1 more source

VIBRATION TRANSMISSIBILITY OF THE COFFEE FRUIT-PEDUNCLE SYSTEM: A FORCED VIBRATION STUDY OF HIGH FREQUENCY AIMING MECHANICAL HARVESTING [PDF]

open access: yesEngenharia Agrícola, 2023
Semi-mechanized and mechanized harvesting use machines that promote the transference of vibrational energy and impact to achieve the detachment of coffee fruits.
Geice P. Villibor   +4 more
doaj   +1 more source

Performance Analysis of Brushless Wound Rotor Vernier Machine by Utilizing Third Harmonic Field Excitation

open access: yesIEEE Access, 2023
In this paper, a self-excited topology by utilizing third harmonic field excitation is proposed for realizing the brushless operation of the Wound Rotor Vernier Machine (WRVM).
Sheikh Yasir Hammad   +5 more
doaj   +1 more source

A Study on Second Harmonic Excitation in Electron Beam–Plasma Instability

open access: yesFrontiers in Astronomy and Space Sciences, 2022
The electron beam–plasma interaction is a fundamental nonlinear plasma process that is frequently taking place in space and laboratory plasmas. Such an interaction is found to generate electromagnetic waves observed in space plasmas.
Maryamsadat Rafiei   +3 more
doaj   +1 more source

Experimental Analysis of Transformer Core Vibration and Noise under Inter-Harmonic Excitation

open access: yesApplied Sciences, 2022
With the wide application of power electronic devices and nonlinear loads, the resulting inter-harmonic pollution is becoming more and more serious in the power system.
Qiang He   +5 more
doaj   +1 more source

Application of square-wave inverter in excitation system for magnetic nanoparticle tomography

open access: yesAIP Advances, 2022
To collect the signals of magnetic nanoparticles (MNPs) at a distance from a magnetic nanoparticle tomography, a strong ac magnetic field should be generated by applying a high current to the excitation coil.
Kohta Higashino   +3 more
doaj   +1 more source

Non-Uniform Time Sampling for Multiple-Frequency Harmonic Balance Computations [PDF]

open access: yes, 2013
A time-domain harmonic balance method for the analysis of almost-periodic (multi-harmonics) flows is presented. This method relies on Fourier analysis to derive an efficient alternative to classical time marching schemes for such flows.
Dufour, Guillaume   +5 more
core   +1 more source

Label-free 3D visualization of cellular and tissue structures in intact muscle with second and third harmonic generation microscopy. [PDF]

open access: yes, 2011
Second and Third Harmonic Generation (SHG and THG) microscopy is based on optical effects which are induced by specific inherent physical properties of a specimen.
Krombach Fritz   +11 more
core   +1 more source

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