Results 1 to 10 of about 19,788,140 (289)

Nonlinear Inertial Diode Model Considering the Dependence of Nonequilibrium Charge Carrier Lifetime on Direct Current to Improve Simulation of Radioelectronic Equipment

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2022
Introduction. Adequate modeling of semiconductor devices with a p–n-junction in reverse bias represents a relevant research problem. The existing quasistatic and non-quasistatic models fail to provide a satisfactory description for the dependence of ...
G. M. Shevchenko, E. V. Semyonov
doaj   +1 more source

Electron-Beam Synthesis and Modification and Properties of Boron Coatings on Alloy Surfaces

open access: yesCeramics, 2022
In this study, fore-vacuum plasma electron beam sources were used to deposit a few micron-thick boron coatings on A284 and ZrNb1 alloys and modify their surfaces.
Yury Yushkov   +4 more
doaj   +1 more source

Minimalistic System of Characteristics of Non-linear Baseband Pulse Devices and Its Measurement

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2023
Introduction. The general system of parameters, including compression points and intersection points of various harmonics, is unsuitable for devices operating under the influence of baseband pulses (for example, before the modulator in the transmitter ...
M. A. Nazarov, E. V. Semyonov
doaj   +1 more source

Analysis of the Structure of Nonlinear Distortions at Baseband Pulse Impacts Using Behavioral Nonlinear Models of Electrical Circuits

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2022
Introduction. Measuring harmonic distortions of a baseband pulse signal constitutes a problem due to the continuous nature of their spectrum. In order to obtain nonlinear distortions of a signal, a comparison should be conducted either of the object’s ...
E. V. Semyonov
doaj   +1 more source

Amorphous-crystalline boron-containing coatings formed by the ion-plasma

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2023
Using the method of high-frequency ion-plasma sputtering (magnetron high-frequency deposition under conditions of ion-plasma assisted using a gas (argon) plasma generator «PINK») on the surface of a high-entropy CoFeCrMnNi alloy of non-equiatomic ...
Yu.F. Ivanov   +6 more
doaj   +1 more source

Simultaneous Estimation of Current and Speed of Permanent Magnet Synchronous Motor Based on an Improved Dual Second-Order Observer

open access: yesEnergies, 2023
The third-order state observer implements the decoupled control and the accurate estimation of the d-axis current, q-axis current, and rotor speed of the permanent magnet synchronous motor (PMSM). Its complex calculation, however, is a challenge for most
Guorong Zhu   +3 more
doaj   +1 more source

Improved Synergetic Current Control for Grid-connected Microgrids and Distributed Generation Systems

open access: yesJournal of Modern Power Systems and Clean Energy, 2022
This paper presents the development of improved synergetic current control for the injected current of an inverter in the grid-connected microgrid and the distributed generation system (DGS).
A. Elnady, A. Noureldin, A. A. Adam
doaj   +1 more source

Filament X-ray Tube Current Control Method Using Indirect Filament Temperature Estimation

open access: yesApplied Sciences, 2021
The recent increase in ailments has increased the demand for diagnosis and surgery based on X-rays. An X-ray system using a filament-type tube heats the filament for operation, and the electrons emitted by the thermal energy during this process produce X-
Je-Jin Jang, He-Lin Zhu, Hyung-Soo Mok
doaj   +1 more source

Multiple Harmonic Current Injection System for Audible Noise Analysis of AC Filter Capacitors in Converter Stations

open access: yesIEEE Access, 2020
The audible noise of AC filter capacitors is one of the major noise sources in High Voltage Direct Current (HVDC) converter stations. In order to avoid the sharp noise of AC filter capacitors, it is necessary to design a Multiple Harmonic Current ...
Jingang Han   +5 more
doaj   +1 more source

Femtocore: An Application Specific Processor for Vertically Integrated High Performance Real-Time Controls

open access: yesIEEE Open Journal of the Industrial Electronics Society, 2021
In applications that require a high availability and high performance (for example aerospace),modular power electronics and multi-phase machines represent an advantageous choice.
Filippo Savi   +5 more
doaj   +1 more source

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