Results 61 to 70 of about 477,540 (265)

Investigation of a bidirectional DC/DC converter with zero‐voltage switching operation for battery interfaces

open access: yesIET Power Electronics, 2021
This paper proposes a bidirectional DC–DC converter with soft‐switching capabilities. The main characteristic of this converter is that it can be operated in both boost and buck modes.
Veera Venkata Subrahmanya Kumar Bhajana   +5 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

Synthesis and analysis of a cross-connected Fibonacci dc/dc converter with high voltage gain

open access: yesEnergy Reports, 2020
For thermal energy harvester based on a step-up dc/dc converter, we present a cross-connected Fibonacci dc/dc converter and its analysis method in this paper.
Kei Eguchi   +3 more
doaj   +1 more source

A review of DC/DC converter-based electrochemical impedance spectroscopy for fuel cell electric vehicles

open access: yesRenewable Energy, 2019
Considering transport applications, there is worldwide an increasing interest in the use of hydrogen-energy for supplying electric powertrains. In order to extend the fuel cell lifespan and to increase its reliability and efficiency, the following ...
Hanqing Wang, A. Gaillard, D. Hissel
semanticscholar   +1 more source

Reinforcement Learning Based Efficiency Optimization Scheme for the DAB DC–DC Converter With Triple-Phase-Shift Modulation

open access: yesIEEE transactions on industrial electronics (1982. Print), 2020
Aim to improve the power efficiency of the dual-active-bridge (DAB) dc–dc converter, an efficiency optimization scheme with triple-phase-shift (TPS) modulation using reinforcement learning (RL) is proposed in this article.
Yuanhong Tang   +6 more
semanticscholar   +1 more source

Uniform Amorphization of Crystalline Silicon Surfaces Enabled by Deep Ultraviolet Femtosecond Laser Pulses

open access: yesAdvanced Engineering Materials, EarlyView.
Deep‐UV (258 nm) femtosecond pulses enable uniform amorphous silicon writing on Si(100)/(111) with a six‐fold larger fluence amorphization window than NIR methods. Optimized fluence and overlap yield 20–45 nm uniform and continuous amorphous layers. Microscopy shows sharp interfaces, and real‐time reflectivity reveals nanosecond melt–resolidification ...
Wissal Benali   +5 more
wiley   +1 more source

A Control Strategy of Energy Storage Converter Based on Dual-droop Control for Onboard DC-grid

open access: yesKongzhi Yu Xinxi Jishu, 2020
Aiming at the requirements of precise power distribution/transfer between bi-directional DC-DC converters, DC-DC converter and diesel generator converter, as well as connected/islanded seamless transition with onshore DC-grid, it proposed a P-V and SOC-I
XU Rong   +5 more
doaj  

Bidirectional Tracking Robust Controls for a DC/DC Buck Converter-DC Motor System

open access: yesComplexity, 2018
Two differential flatness-based bidirectional tracking robust controls for a DC/DC Buck converter-DC motor system are designed. To achieve such a bidirectional tracking, an inverter is used in the system.
Eduardo Hernández-Márquez   +6 more
doaj   +1 more source

Optoelectronic Synaptic Devices Using Molecular Telluride Phase‐Change Inks for Three‐Factor Learning

open access: yesAdvanced Functional Materials, EarlyView.
Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner   +14 more
wiley   +1 more source

Spin Injection Of Exciton–Polaritons With Halide Perovskites At Room Temperature

open access: yesAdvanced Functional Materials, EarlyView.
A monolithic Tamm‐plasmon microcavity embedding a two‐dimensional halide perovskite enables room‐temperature spin injection of exciton‐polaritons under quasi‐resonant optical excitation. Polarization‐resolved spectroscopy reveals partial preservation of the injected spin in the lower polariton branch, while bare excitons remain fully depolarized.
Elena Sendarrubias Arias‐Camisón   +8 more
wiley   +1 more source

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