Results 31 to 40 of about 1,395,536 (296)

Fast Calculation of Electromagnetic Forces in IPMSMs Under PWM VSI Supply Based on Small-Signal Time-Harmonic Finite Element Method

open access: yesCES Transactions on Electrical Machines and Systems, 2022
This paper introduces a novel method for fast calculating the electromagnetic forces in interior permanent magnet synchronous machines (IPMSMs) under pulse width modulation (PWM) voltage source inverter (VSI) supply based on the small-signal time ...
Sa Zhu, Jianbo Lu, Feng Zeng
doaj   +1 more source

THE LAW OF ELECTROMAGNETIC FORCE

open access: yesElectrical Engineering & Electromechanics, 2014
Calculation peculiarities for Lorentz force, Ampere force, interaction of parallel electric currents, and the moment of electrical machines are analyzed. They have exceptions on application, and they are the rules which result from the law of electromagnetic force as coordinate derivative of the operating magnetic flow.
openaire   +4 more sources

Electromagnetic Induction in the Earth [PDF]

open access: yes, 2010
Electromagnetic methods are of particular importance in geophysics as they provide a unique view of the Earth’s interior through imaging its geoelectrical structures.
Marcuello, Alex   +5 more
core   +1 more source

Transmission of Vibrations from Windings to Tank in High Power Transformers

open access: yesEnergies, 2023
This article presents a step-by-step methodology for calculating transformer tank vibrations caused by electromagnetic forces. This approach uses 3D finite element models for both magnetic and structural calculations. Particular attention was paid to the
Pawel Witczak, Michal Swiatkowski
doaj   +1 more source

Forces on a Rayleigh particle in the cover region of a planar waveguide

open access: yes, 2000
We report on the optimization of a waveguide structure for the maximization of the radiation forces exerted on a Rayleigh particle in the cover region.
Luff, B.J.   +3 more
core   +1 more source

Claw‐pole magnetic levitation torque motor for 2D valve with automatic neutral adjustment

open access: yesIET Electric Power Applications, 2023
In order to solve the problems of complex structure and the difficulty of neutral adjustment of the existing 2D valve electro‐mechanical converter, a kind of claw pole magnetic levitation torque motor (CPMLTM) was proposed, which automatically suspended ...
Jiahui Huang   +3 more
doaj   +1 more source

Controlling the Shape of a Double DNA-like Helix as an Element of Metamaterials

open access: yesPhotonics
The aim of the article is to study the forces arising in a conductive DNA-like double helix in the field of a microwave electromagnetic wave. These forces must be considered for both actual DNA molecules and double DNA-like helices that serve as ...
Igor V. Semchenko   +3 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

Computation of transient electromagnetic fields due to switching in high voltage substations [PDF]

open access: yes, 2010
Switching operations of circuit breakers and disconnect switches radiate transient electromagnetic fields within high-voltage substations. The generated fields may interfere and disrupt normal operations of electronic equipment.
Siew, W.H., Musa, B.U., Judd, M.D.
core   +4 more sources

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Home - About - Disclaimer - Privacy