Results 91 to 100 of about 239,366 (313)

Acoustic noise radiated by PWM-controlled induction machine drives [PDF]

open access: yes, 2000
This paper investigates the acoustic noise radiated from two nominally identical induction motors when fed from sinusoidal, and asymmetric regular sampling subharmonic and space-vector pulsewidth modulation (PWM) converters.
Chan, C.C.   +5 more
core   +3 more sources

Recent Progress in Mechanoluminescence for Multi‐Dimensional Stress Monitoring

open access: yesAdvanced Science, EarlyView.
Multi‐dimensional stress visualization technology (0D point detection, 1D linear distribution, 2D planar imaging, 3D volume reconstruction) has become a focus of attention in the field of stress sensing. The transition from “points” to “multi‐dimensional spatial fields” facilitates real‐time, in situ, and high‐resolution visualization of stress ...
Xiuxia Yang   +3 more
wiley   +1 more source

Review of multiport modular multilevel converters for residential applications: A control perspective

open access: yesIET Power Electronics, EarlyView., 2023
Here, multiport modular multilevel converter (MPMMC) topologies will be reviewed and analysed from a control standpoint. It does this through identifying feasible MPMMC topologies, developing review criteria and then reviewing the feasible topologies.
Stephan Adams   +3 more
wiley   +1 more source

MULTIFUNCTIONAL POWER QUALITY CORRECTION SYSTEM [PDF]

open access: yes, 2018
Study the system of electric power quality control based on AVI with PWM in the systems of group feed of electromechanics with the direct-current ...
KOLB, Andrii
core  

Liquid Metals in Radio Frequency Applications: A Review of Physics, Manufacturing, and Emerging Technologies

open access: yesAdvanced Electronic Materials, EarlyView.
This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
wiley   +1 more source

A nine‐level T‐type inverter (9L‐TTI) with voltage boost capability

open access: yesIET Power Electronics, EarlyView., 2023
A new multi‐level inverter topology with boosting feature considering the reduced switch count has been presented, compared and validated. Abstract This paper introduces a 9L T‐type boost inverter (9L‐TTI) based multilevel topology, which generates a nine‐level output voltage in the boost mode.
Zarren Firdous   +5 more
wiley   +1 more source

Pulse-width predictive control for LTV systems with application to spacecraft rendezvous [PDF]

open access: yes, 2017
This work presents a Model Predictive Controller (MPC) that is able to handle Linear Time-Varying (LTV) plants with Pulse-Width Modulated (PWM) control.
Camacho, Eduardo F.   +2 more
core  

Cooling Strategies for Greenhouses in Summer: Control of Fogging by Pulse Width Modulation [PDF]

open access: yes, 2008
The possibilities for improving the control of greenhouse fogging systems, were studied by comparing several combinations of ventilation cooling techniques, shade screening and low-pressure fogging.
A. Perdigones   +24 more
core   +2 more sources

Closest‐Packed Pixel Structure Preparation and Driving Optimization for Electrowetting Displays

open access: yesAdvanced Electronic Materials, EarlyView.
This paper pioneers the preparation of hexagonal‐pixel Electrowetting Displays (EWDs) based on dense tiling principles. Compared to square pixels, they reduce the threshold voltage by 42.67% and the voltage required for maximum aperture ratio by 13.94%.
Feng Li   +9 more
wiley   +1 more source

Dual source novel nine level inverter (DSN2LI) design with minimum active devices and inherent polarity generation

open access: yesIET Power Electronics, EarlyView., 2023
This article presents a dual‐source novel nine‐level inverter (DSN2LI) featuring minimal devices. Utilizing eight switches, which include 2 bidirectional switching devices and 2 uneven dc links, the proposed DSN2LI generates nine levels. The DSN2LI employs the utilization of trinary geometric DC links.
Arun Vijayakumar   +3 more
wiley   +1 more source

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