Results 21 to 30 of about 4,635,180 (302)

A multi-objective hybrid algorithm for feeder reconfiguration and planning of electrical distribution system

open access: yesEngineering and Applied Science Research, 2019
In this paper, a multi-objective Gravitational Search Algorithm (GSA) and Tabu search heuristic for feeder reconfiguration and planning of an electrical distribution system are proposed.
Kothuri Ramakrishna, Basavaraja Banakara
doaj   +1 more source

Investigation of the Influences of Thrust Loads Resulted by Helix Angle Directions of Planetary Gear Sets on Bearing Power Losses in Automotive Planetary Gear Trains

open access: yesApplied Sciences, 2021
In the recent automotive industries, automotive technologies for improving fuel efficiency have focused on the developments of reducing power losses in a transmission.
Hyun Sik Kwon
doaj   +1 more source

A wideband CPW ring power combiner with low insertion loss and high port isolation [PDF]

open access: yes, 2012
In this paper we present a coplanar waveguide (CPW)-based ring power combiner that exhibits less than 0.8 dB insertion loss, better than 15 dB port match and higher than 22 dB isolation loss over the frequency range from 50 GHz to 100 GHz.
Cumming, D.R.S.   +4 more
core   +1 more source

Resonant Bend Loss in Leakage Channel Fibers [PDF]

open access: yes, 2012
Leakage channel fibers, designed to suppress higher-order modes, demonstrate resonant power loss at certain critical radii of curvature. Outside the resonance, the power recovers to the levels offset by the usual mechanism of bend-induced loss.
B. Samson   +16 more
core   +1 more source

Finding Solutions for Optimal Reactive Power Dispatch Problem by a Novel Improved Antlion Optimization Algorithm

open access: yesEnergies, 2019
In this paper, a novel improved Antlion optimization algorithm (IALO) has been proposed for solving three different IEEE power systems of optimal reactive power dispatch (ORPD) problem.
Zelan Li   +4 more
doaj   +1 more source

Electron-Acoustic Phonon Energy Loss Rate in Multi-Component Electron Systems with Symmetric and Asymmetric Coupling Constants [PDF]

open access: yes, 2007
We consider electron-phonon (\textit{e-ph}) energy loss rate in 3D and 2D multi-component electron systems in semiconductors. We allow general asymmetry in the \textit{e-ph} coupling constants (matrix elements), i.e., we allow that the coupling depends ...
D. Pines   +6 more
core   +1 more source

Modeling of Power Losses in High-Power Motor Drives

open access: yesELECTRICA, 2023
The efficiency of the system decreases with increasing switching frequency in high-power density industrial driving applications. In order to increase the system efficiency, reliability, and power quality in a high-power drive system, power losses are becoming more crucial to calculate precisely in the industrial drive. In this study, the switching and
Kagit, Ebrar   +2 more
openaire   +4 more sources

Impact of Ambient Temperature on Shunt Capacitor Placement in a Distorted Radial Distribution System

open access: yesEnergies, 2018
In electrical distribution systems, shunt capacitors are installed in order to reduce system losses, to enhance the voltage profile, and to free up system capacity. Nevertheless, the installation of shunt capacitors in distribution systems with distorted
Essam A. Al-Ammar   +2 more
doaj   +1 more source

Distributed generation’s integration planning involving growth load models by means of genetic algorithm [PDF]

open access: yesArchives of Electrical Engineering, 2018
The growth in the system load accompanied by an increase of power loss in the distribution system. Distributed generation (DG) is an important identity in the electric power sector that substantially overcomes power loss and voltage drop problems when it
Yuli Asmi Rahman   +3 more
doaj   +1 more source

Power loss in open cavity diodes and a modified Child Langmuir Law

open access: yes, 2005
Diodes used in most high power devices are inherently open. It is shown that under such circumstances, there is a loss of electromagnetic radiation leading to a lower critical current as compared to closed diodes.
Birdsall C. K.   +5 more
core   +1 more source

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