Results 81 to 90 of about 45,153 (318)
Journal of Mechatronics, Electrical Power, and Vehicular Technology, 2013 This paper presents a design and implementation of a converter which has a high power factor for battery charger application. The converter is a combination of a SEPIC converter and a full-bridge DC-DC converter connected in two stages of series circuit.
Moh. Zaenal Efendi +2 more
doaj +1 more source
Dual‐Mode Magnetic Elastomer for On‐Demand Motion and Degradation
Advanced Functional Materials, EarlyView.A dual‐mode magnetic elastomer is introduced, enabling DC field‐driven programmable actuation and AC field‐driven magnetothermal degradation. GHz‐range magnetic fields generate ultrafast heating of magnetic nanoparticles that activates cleavage of the silicone elastomer matrix.
Jieun Han +13 more
wiley +1 more source
Five-Megahertz PWM-Controlled Current-Mode Resonant DC–DC Step-Down Converter Using GaN-HEMTs
, 2015 High power efficiency and high power density are required in regulated isolated dc-dc converters. In this paper, a novel pulsewidth modulation (PWM) control method that is suitable for an isolated current-mode resonant dc-dc converter operated at a ...
Matsuura, Ken +5 more
core +1 more source
Titanium Suboxides Responsible for Electronic Anomaly Near Room Temperature in the Ti3C2Tx MXene
Advanced Functional Materials, EarlyView.Our multi‐technique study reveals that the near‐room‐temperature anomaly in Ti3C2Tx MXene is linked to titanium suboxide nanodomains, including Ti3O5, embedded within the MXene host. Their temperature‐driven transformation provides an alternative explanation to solvent‐ and swelling‐based models and offers new insight into the thermally activated ...
Bence G. Márkus +8 more
wiley +1 more source
EMT simulation of an MTDC system integrating Modular Multilevel DC/DC converter with DC voltage control [PDF]
The increasing demand to utilize renewable energy necessitates the transmission of power over long distances. HVDC technology has emerged as the optimal solution for this purpose due to fewer losses and good economic factors.
COLAS, Frédéric +3 more
core
, 2012 A dc-dc converter has been developed for retrofitting inside the vacuum space of the HTS rotor of a synchronous generator. The heavy copper sections of the current leads used for energising the HTS field winding were replaced by cryogenic power ...
Bailey, W.O.S. +12 more
core +1 more source
Scientific ReportsThis research article meticulously examines advanced power electronic converters crucial for optimizing electrolyzer perfor- mance in hydrogen production systems. It conducts a thorough review of mature electrolyzer types, detailing their specifications,
AlAmir Hassan +3 more
doaj +1 more source
Power Factor Corrector with Bridgeless Flyback Converter for DC Loads Applications
Energies, 2018 Since power systems with a DC distribution method has many advantages, such as conversion efficiency increase of about 5⁻10%, cost reducing by about 15⁻20% and so on, the AC distribution power system will be replaced by a DC distribution one.
Sheng-Yu Tseng +2 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg +6 more
wiley +1 more source
An Improved Current Ripples Minimization Technique for Cascaded DC–DC Converter in DC Microgrid
The distributed direct current (DC) power system relies heavily on the cascaded DC–DC converter that employs a common bus to connect multiple DC–DC converters.
Abdelilah Chibani +5 more
core +1 more source