Results 61 to 70 of about 13,248 (302)

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

open access: yesAdvanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie   +4 more
wiley   +1 more source

Fuzzy second order sliding mode control of a unified power flow controller [PDF]

open access: yes, 2019
Purpose. This paper presents an advanced control scheme based on fuzzy logic and second order sliding mode of a unified power flow controller. This controller offers advantages in terms of static and dynamic operation of the power system such as the ...
Boudjema, Zinelaabidine   +2 more
core   +3 more sources

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Effective integration of large-scale wind power using PV-STATCOM

open access: yesThe Journal of Engineering, 2019
Integration of large scale wind farms into the electrical grid poses challenges due to the variable nature of the source of energy and the fact that induction generators, used in the wind turbines, lacking the voltage regulation capability or even, in ...
M.A.H. Rafi, T. Vo, P.H. Nguyen
doaj   +1 more source

Resistance Rapid Heating of Aluminum Coatings in an Extreme High Vacuum–Adequate Atmosphere for Hot Stamping

open access: yesAdvanced Engineering Materials, EarlyView.
The subject of this work is the development of a corrosion‐protective coating on steel sheets for form hardening. Rapid heating in an extreme high vacuum (XHV)‐adequate atmosphere is a useful method to prevent oxidation during alloying of 22MnB5 and aluminum to obtain a metallurgical bonding.
Lorenz Albracht   +5 more
wiley   +1 more source

Geometric Algebra in Nonsinusoidal Power Systems: A Case of Study for Passive Compensation [PDF]

open access: yes, 2019
New-generation power networks, such as microgrids, are being affected by the proliferation of nonlinear electronic systems, resulting in harmonic disturbances both in voltage and current that affect the symmetry of the system.
Gil Montoya, Francisco
core   +2 more sources

Surface Tension Measurement of Ti‐6Al‐4V by Falling Droplet Method in Oxygen‐Free Atmosphere

open access: yesAdvanced Engineering Materials, EarlyView.
In this article, the temperature‐dependent surface tension of free falling, oscillating Ti‐6Al‐4V droplets is investigated in both argon and monosilane doped, oxygen‐free atmosphere. Droplet temperature and oscillation are captured with one single high‐speed camera, and the surface tension is calculated with Rayleigh's formula.
Johannes May   +9 more
wiley   +1 more source

Software Tool for Optimal Placement and Sizing of Shunt Var Compensators in Power Systems

open access: yesJournal of Basic and Applied Research in Biomedicine, 2022
This paper presents a MATLAB-based power system software tool, named as OPSVC for optimal placement and sizing of shunt Var compensators in both distribution and transmission systems. The OPSVC software incorporates the developed optimization algorithms
Reza Sirjani
doaj   +2 more sources

Bias‐Free Highly Efficient and Stable Dye‐Sensitized Photoelectrochemical Cells via Cascade Charge Transfer

open access: yesAdvanced Functional Materials, EarlyView.
A buried‐junction DSPEC design is introduced that leverages cascade charge transfer to enhance efficiency, stability, and versatility. This approach facilitates effective charge transfer and minimizes recombination losses, leading to significant improvements.
Jun‐Hyeok Park   +8 more
wiley   +1 more source

Parameters of Reactive Power Compensators for Alternating Current Transmissions

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2004
The paper considers selection methods of reactive power compensator parameters of for alternating current transmissions by different conditions. Calculated relationships and graphic dependences are obtained.
G. E. Pospelov
doaj   +1 more source

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