Results 31 to 40 of about 412,357 (331)

Study on impact of gap difference on plasma distribution of direct current vacuum circuit breaker with double-break

open access: yesAIP Advances, 2023
During the fault current breaking process of a mechanical direct current vacuum circuit breaker (DC VCB) with double-break (DB), the mechanism’s dispersion can result in a gap difference between the two breaks. A DB DC VCB breaking experiment platform is
Chongyang Huang   +5 more
doaj   +1 more source

Closed-form design optimization for LLC converters with wide output voltage range based on FHA

open access: yesScientific Reports
This paper presents a novel design optimization strategy for LLC resonant converters that enhances full-load efficiency while operating across wide input and output voltage ranges.
Ahmed M. A. Hussein   +2 more
doaj   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

Adaptation of the Electric Machines Learning Process to the European Higher, Education Area [PDF]

open access: yes, 2010
In this paper the basic lines of a complete teaching methodology that has been developed to adaptthe electric machines learning process to the European Higher Education Area (EHEA) arepresented.
Blázquez García, Francisco   +4 more
core   +1 more source

Electric Waterborne Public Transportation in Venice: a Case Study [PDF]

open access: yes, 2015
The paper reports the results of a study for moving the present diesel-based watercraft propulsion technology used for public transportation in Venice city and lagoon to a more efficient and smart electric propulsion technology, in view of its adopted in
Bolognani, Silverio   +4 more
core   +1 more source

Solid oxide fuel cell (SOFC) control strategy enhancement by adaptive neuro-fuzzy inference system (ANFIS)

open access: yesScientific Reports
Global warming is a vital problem that many researchers tried to solve with so many solutions such as: reducing electricity production with conventional generators by using renewable energy resources and using hydrogen as an alternative to fossil fuels ...
Sameh Ramadan   +3 more
doaj   +1 more source

Portable Low‐Field Magnetic Resonance Imaging in People With Human Immunodeficiency Virus

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective The aging population of people with HIV (PWH) raises heightened concerns regarding accelerated aging and dementia. Portable, low‐field MRI (LF‐MRI) is an innovative technology that could enhance access and facilitate routine monitoring of PWH.
Annabel Sorby‐Adams   +14 more
wiley   +1 more source

Analysis of an Induction Machine by the Finite Element Method [PDF]

open access: yes, 2018
Induction machines are popular in every segments of industry due to their simple construction and robust operation. Asynchronous machines have been being built in electric vehicles, too.
Belahcen, Anouar   +5 more
core   +1 more source

Thermal models of electric machines with dynamic workloads

open access: yesLandtechnik, 2015
Electric powertrains are increasingly used in off-highway machines because of easy controllability and excellent overall efficiency. The main goals are increasing the energy efficiency of the machine and the optimization of the work process.
Christian Pohlandt, Marcus Geimer
doaj   +1 more source

Modern electric machines and drives for wind power generation: A review of opportunities and challenges

open access: yesIET Renewable Power Generation, 2021
With ever‐increasing concerns on energy crisis and environmental protection, there is a fast‐growing interest in wind power generation systems. As electric machines and drives are core components in wind turbines, it is a pressing need for researchers ...
Hao Chen   +4 more
doaj   +1 more source

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