Results 11 to 20 of about 133,386 (262)

AC-DC DAB Converter with Power Factor Correction

open access: yesEnergies, 2022
AC-DC conversion is required in many applications, and in some of them isolation is strictly required, certainly while maintaining characteristics such as a high power factor and low input current THD. In this paper, an AC-DC converter, comprising a full-
Pablo Guzmán   +5 more
doaj   +1 more source

Multi-Phase Interleaved AC–DC Step-Down Converter with Power Factor Improvement

open access: yesMicromachines, 2023
This paper presents the converter design of a single-phase non-isolated step-down controlled rectifier for power factor improvement and output voltage regulation.
Jose M. Sosa-Zuniga   +3 more
doaj   +1 more source

A Compact Circular Rectenna for RF-Energy Harvesting at ISM Band

open access: yesMicromachines, 2023
With low-power gadgets proliferating, the development of a small, effective rectenna is crucial for wirelessly energizing devices. A simple circular patch with a partial ground plane for RF-energy harvesting at ISM (2.45 GHz) band is proposed in this ...
Lalbabu Prashad   +2 more
doaj   +1 more source

A Sliding Surface-Regulated Current-Mode Pulse-Width Modulation Controller for a Digital Signal Processor-Based Single Ended Primary Inductor Converter-Type Power Factor Correction Rectifier

open access: yesEnergies, 2017
To efficiently supply wide-range DC voltage from a pulse-width modulation (PWM) rectifier, this paper presents a single-phase, full-wave, diode-bridge, single-ended primary-inductor converter-type (SEPIC-type) power-factor-correction (PFC) rectifier in ...
Hsin-Jang Shieh, Ying-Zuo Chen
doaj   +1 more source

A Novel Communication System For Deaf And Dumb People using gesture [PDF]

open access: yesITM Web of Conferences, 2020
Human Beings know each other and contact with themselves through thoughts and ideas.The best way to present our idea is through speech. Some people don’t have the power of speech; the only way they communicate with others is through sign language.
Ambavane Pritesh   +5 more
doaj   +1 more source

Rectifiability

open access: yes, 2022
Rectifiable sets, measures, currents and varifolds are foundational concepts in geometric measure theory. The last four decades have seen the emergence of a wealth of connections between rectifiability and other areas of analysis and geometry, including deep links with the calculus of variations and complex and harmonic analysis.
openaire   +4 more sources

Recent Trends and Challenges in Near-Field Wireless Power Transfer Systems

open access: yesIEEE Open Journal of the Solid-State Circuits Society, 2023
In recent years, wireless power transfer (WPT) has become a widespread method for charging and powering devices, including but not limited to consumer electronics, industrial applications, electric vehicles, medical devices, and sensor nodes.
Elisabetta Moisello   +3 more
doaj   +1 more source

A Compact Rectifier Design Method Utilizing Harmonics

open access: yesApplied Sciences, 2021
This paper proposes a compact rectifier design method for utilizing harmonics. Based on total reflection generated by pure reactance loads at the second harmonic (2nd) and open circuit at the third harmonic (3rd), a compact DC-pass filter is designed to ...
Xuelong Qin   +3 more
doaj   +1 more source

Tri-Band Rectenna Dedicated to UHF RFID, GSM-1800 and UMTS-2100 Frequency Bands

open access: yesSensors, 2022
The omnipresence of connected objects leads to the quasi-permanent presence of electromagnetic waves from different sources in our environment. This article presents a new electromagnetic energy harvesting device, rectenna type, which offers the ...
Ognadon Assogba   +4 more
doaj   +1 more source

Techno-Economic Assessment of Hydrogen Usage in a Smart Grid, Employing a Staggered Optimization Algorithm [PDF]

open access: yesE3S Web of Conferences, 2021
A sustainable energy economy implies high shares of volatile renewable energy sources and requires the use of energy storage technologies. Hydrogen is a very flexible energy carrier and can be employed as a large-scale energy storage in electric grids ...
Speckmann Friedrich-Wilhelm   +2 more
doaj   +1 more source

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