Results 31 to 40 of about 15,724,869 (305)

Frequency-Selective Beamforming Array Antenna Systems with Frequency-Dependent Phase Shifters [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2019
A frequency-selective beamforming array antenna system is proposed for next-generation mobile applications. Whereas a conventional phased array steers antenna beams in the same direction, the proposed system involves a channel-selective beam for each ...
Jung Ouk Kim   +2 more
doaj   +1 more source

Model Predictive Phase Control for Single-Phase Electric Springs

open access: yesEnergies, 2022
In this paper, model predictive control (MPC) is proposed for single-phase electric springs (ESs) with the help of the existing δ control, which is realized by controlling the instantaneous phase angle of the predefined sinusoidal reference of a certain ...
Qingsong Wang   +3 more
doaj   +1 more source

Vectorial Approach Based Control of a Seven-Phase Axial Flux Machine Designed for Fault Operation [PDF]

open access: yes, 2008
Version éditeur disponible à l'adresse suivante : http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4519973&isnumber=4636792This paper deals with easy-to-implement control strategies when a seven-phase axial flux permanent magnet machine supplied ...
LOCMENT, Fabrice   +5 more
core   +2 more sources

The influence of the supply mains parameters on the stability of phase control during resistance welding

open access: yesFrontier Materials & Technologies, 2023
Resistance welding in large-scale manufacturing is carried out with a significant number of disturbances, the cumulative effect of which may exceed the capabilities of modern control equipment.
Aleksey S. Klimov   +4 more
doaj   +1 more source

Étude comparative de différents correcteurs pour la commande optimale avec défauts d’une machine pentaphasée [PDF]

open access: yes, 2012
La version éditeur de cet article est accessible à l'adresse suivante : doi:10.3166/ejee.15.377-400The use of multiphase PM synchronous machines associated with VSI drives appears to be a very efficient solution when a high level of reliability ...
CHARPENTIER, Jean-Frederic   +3 more
core   +1 more source

Vectorial formalism for analysis and design of polyphase synchronous machines [PDF]

open access: yes, 2003
A vectorial formalism for analysis and design of polyphase synchronous machines without reluctance and saturation effects is described. We prove the equivalence of such a machine with a set of magnetically independent machines, which are electrically and
BOUSCAYROL, Alain   +5 more
core   +1 more source

An Efficient Control of a Series Connected Two-Synchronous Motor 5-Phase with Non Sinusoidal EMF Supplied by a Single 5-leg VSI: Experimental and Theoretical Investigations [PDF]

open access: yes, 2012
Lien vers la version finale éditeur This paper proposes the control scheme of an original drive which is made up of two 5-phase permanent magnet synchronous machines (PMSM) connected in series.
CHARPENTIER, Jean-Frederic   +3 more
core   +1 more source

Balanced Homodyne Detector With Independent Phase Control and Noise Detection Branches

open access: yesIEEE Access, 2019
Squeezed state light is a fundamental resource for many quantum optics experiments. Important applications like quantum-enhanced magnetometer and quantum key distribution, require the squeezing level as high as possible.
Jinrong Wang   +6 more
doaj   +1 more source

Impact of PWM strategies on RMS current of the DC-link Voltage Capacitor of a dual-three phase drive [PDF]

open access: yes, 2014
The major drawback of usual dual three-phase AC machines, when supplied by a Voltage Source Inverter (VSI), is the occurrence of extra harmonic currents which circulate in the stator windings causing additional losses and constraints on the power ...
ROUHANA, Najib   +5 more
core   +1 more source

Micromirrors with controlled amplitude and phase [PDF]

open access: yesApplied Optics, 2017
This paper describes the fabrication of circular micromirrors with diameters between 50 and 150 μm with controlled amplitude and phase. Design, manufacturing, and characterization method are presented.
Julien, Lumeau   +2 more
openaire   +2 more sources

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