Results 21 to 30 of about 7,319 (268)

Advancements in Electrical Steels: A Comprehensive Review of Microstructure, Loss Analysis, Magnetic Properties, Alloying Elements, and the Influence of Coatings

open access: yesApplied Sciences, 2023
Electrical steels play a crucial role in modern electrical devices and power systems due to their exceptional magnetic properties. This comprehensive review delves into the advancements in the field of electrical steels, focusing on key aspects such as ...
Elmazeg Elgamli, Fatih Anayi
doaj   +1 more source

Smart Magnetic Microrobots Learn to Swim with Deep Reinforcement Learning

open access: yesAdvanced Intelligent Systems, 2022
Swimming microrobots are increasingly developed with complex materials and dynamic shapes and are expected to operate in complex environments in which the system dynamics are difficult to model and positional control of the microrobot is not ...
Michael R. Behrens, Warren C. Ruder
doaj   +1 more source

New Hybrid Machine Learning Method for Detecting Faults in Three-Phase Power Transformers

open access: yesEnergies, 2022
A novel hybrid machine learning technique is proposed for the protection of three-phase power transformers in this study. Here, the developed model was tested across several types of current signal fault cases from different fault conditions and examined
Othman Abdusalam   +3 more
doaj   +1 more source

The design of a hybrid DC/DC converter for LED lighting system using a single switch

open access: yesEnergy Reports, 2023
A novel hybrid Luo-Cuk converter designed for LED lighting systems combines elements from both Luo and Cuk topologies. By integrating the input branch of both topologies, the converter, employing a single switch, can generate two distinct types of ...
Emad Alhani, Fatih Anayi
doaj   +1 more source

High Performance Planar Magnetics Based on an Unbalanced-Flux Approach

open access: yesIEEE Open Journal of Power Electronics, 2023
This paper presents a new design concept to increase the efficiency and the power density of planar magnetics. In contrast to the existing magnetics, which are built using the balanced magnetic flux density design, the proposed design concept generates ...
Sobhi Barg   +2 more
doaj   +1 more source

Magnetic field annihilators: invisible magnetization at the magnetic equator [PDF]

open access: yesGeophysical Journal International, 2003
SUMMARY Some distributions of magnetization give rise to magnetic fields that vanish everywhere above the surface, rendering these distributions of magnetization completely invisible. They are the annihilators of the magnetic inverse problem. Known examples are the infinite sheet with constant magnetization and the spherical shell of constant ...
Maus, S., Haak, V.
openaire   +3 more sources

Variable bias current in magnetic bearings for enhanced control system performance and energy efficiency

open access: yesMechanical Engineering Journal
Active Magnetic Bearings (AMBs) offer significant advantages for high-speed and high-precision applications due to their contactless operation, low mechanical wear, and active control capabilities.
Ali DIAB   +3 more
doaj   +1 more source

Hurricane Irma 2017: Relationships with Lightning, Gravity, and Earthquakes (Update – Coronal Holes and Hurricane Dorian 2019) [PDF]

open access: yesJournal of Systemics, Cybernetics and Informatics, 2020
Hurricane Irma, 2017, along with other storm systems (Fig. 1) howling winds and grounding lightning (Fig. 2), tracked Caribbean mantle circuits along the tectonic trenches of Puerto Rico and Cuba.
Bruce Leybourne
doaj  

Load Frequency Control Based on the Bees Algorithm for the Great Britain Power System

open access: yesDesigns, 2021
This paper focuses on using the Bees Algorithm (BA) to tune the parameters of the proposed Fuzzy Proportional–Integral–Derivative with Filtered derivative (Fuzzy PIDF), Fractional Order PID (FOPID) controller and classical PID controller developed to ...
Mokhtar Shouran   +3 more
doaj   +1 more source

Magnetic Catalysis Versus Magnetic Inhibition [PDF]

open access: yesPhysical Review Letters, 2013
We discuss the fate of chiral symmetry in an extremely strong magnetic field B. We investigate not only quark fluctuations but also neutral meson effects. The former would enhance the chiral-symmetry breaking at finite B according to the Magnetic Catalysis, while the latter would suppress the chiral condensate once B exceeds the scale of the hadron ...
Fukushima, Kenji, Hidaka, Yoshimasa
openaire   +3 more sources

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