Results 21 to 30 of about 5,981,715 (415)

Fault Ride-Through Power Electronic Topologies for Hybrid Energy Storage Systems

open access: yesEnergies, 2020
This work presents a fault ride-through control scheme for a non-isolated power topology used in a hybrid energy storage system designed for DC microgrids.
Ramy Georgious   +4 more
doaj   +1 more source

Periodic plane-wave electronic structure calculations on quantum computers

open access: yesMaterials Theory, 2023
A procedure for defining virtual spaces, and the periodic one-electron and two-electron integrals, for plane-wave second quantized Hamiltonians has been developed, and it was validated using full configuration interaction (FCI) calculations, as well as ...
Duo Song   +9 more
doaj   +1 more source

Optoelectronic Instrumentation and Measurement Strategies for Optical Chemical (Bio)Sensing

open access: yesApplied Sciences, 2021
There is a growing interest in the development of sensitive, portable, and low-cost instrumentation for optical chemical (bio)sensing. Such instrumentation can allow real-time decision-making for industry, farmers, and researchers.
Francisco Ferrero Martín   +6 more
doaj   +1 more source

Co-Simulation-Based Verification of Torsional Vibration Protection of Electric-Driven Railway Vehicle Wheelsets

open access: yesVibration, 2022
Torsional vibration is an oscillation phenomenon occurring at driven railway vehicle wheelsets. As the resulting dynamic stresses can be significantly larger than the maximum static motor torque, axle and press fit are at risk of failure.
Ahmed Fathy Abouzeid   +5 more
doaj   +1 more source

Quantum-coherent light-electron interaction in an SEM [PDF]

open access: yes, 2021
The last two decades experimentally affirmed the quantum nature of free electron wavepackets by the rapid development of transmission electron microscopes into ultrafast, quantum-coherent systems. In particular, ultrafast electron pulses can be generated and timed to interact with optical near-fields, yielding coherent exchange of the quantized photon ...
arxiv   +1 more source

Analysis of Intrinsic Switching Losses in Superjunction MOSFETs Under Zero Voltage Switching

open access: yesEnergies, 2020
Switching losses of power transistors usually are the most relevant energy losses in high-frequency power converters. Soft-switching techniques allow a reduction of these losses, but even under soft-switching conditions, these losses can be significant ...
Maria R. Rogina   +5 more
doaj   +1 more source

Saliency-Based Rotor Spatial Position Displacement Self-Sensing for Self-Bearing Machines

open access: yesSensors, 2022
Self-bearing machines do not contain physical bearings but magnetic bearings. Both rotor rotary and spatial positions displacement are required in these types of machines to control the rotor position while it is levitating.
Ye gu Kang   +2 more
doaj   +1 more source

Hardware random numbers generator based on microcontroller [PDF]

open access: yesMATEC Web of Conferences
The work considers the principles of development and organization of the random number generation system using a hardware generator of true random numbers. An analysis of noise sources for a hardware generator of true random numbers has been carried out.
Ostapets Denys   +2 more
doaj   +1 more source

Research Progress of Computer in Medicine [PDF]

open access: yesITM Web of Conferences, 2019
With the rapid development of electronic computers, computer technology has been applied into various fields of medicine and its management. The application of computers in medical treatment has also greatly promoted the development of medical treatment.
Zhu Haidong, Gao Jialin
doaj   +1 more source

Comprehensive Review of Renewable Energy Communication Modeling for Smart Systems

open access: yesEnergies, 2022
Due to the rising trends in the adoption of smart systems such as smart grids, smart homes, and vehicle-to-grid, there has been a lot of research interest in these areas.
Justin Ugwu   +4 more
doaj   +1 more source

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