Results 21 to 30 of about 23,714 (263)
Electromagnetic Force on a Magnetic Monopole [PDF]
Progress of Theoretical Physics, 1984 The electromagnetic force on a magnetic monopole in matter is shown to be F=g(H-v\ifmmode\times\else\texttimes\fi{}E/c) when there is only one magnetic monopole in matter. The relation between this force and the conservation law of momentum is discussed. The case in which a macroscopic number of magnetic monopoles exist in matter is also discussed.
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Energies, 2023 This paper presents an analytical study of the air-gap magnetic field of a Surface Permanent Magnet (SPM) linear machine under no load. By means of the method of images, the complex expression of the magnetic field of a conductor, inside the air gap ...
Antonino Di Gerlando, Claudio Ricca
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Applied Sciences, 2023 The use of electric motors, and particularly, Permanent Magnet Synchronous Motors, is increasing in recent years, and their vibration response is one of the most crucial aspects regarding their behaviour.
Mikel Mendizabal +4 more
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IEEE Access, 2020 Unbalanced magnetic pull (UMP) resulting from air-gap eccentricity can present a potential risk to the lifetime and dynamic stability of high-speed electrical machines.
Heesoo Kim +4 more
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Force Calculation in Electromagnetic Devices [PDF]
, 1988 In this paper the authors show how the Maxwell stress tensor can be used, in practice, in order to determine local magnetic forces distribution in an electromagnetic system. An experimental set-up has been designed in view of comparing the theoretical results with the measurements.
Lefèvre, Yvan +2 more
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CES 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
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Transmission of Vibrations from Windings to Tank in High Power Transformers
Energies, 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
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THE LAW OF ELECTROMAGNETIC FORCE
Electrical 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.
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Claw‐pole magnetic levitation torque motor for 2D valve with automatic neutral adjustment
IET 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
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Forces of Shift of the Electromagnetic Motor
Elektronika ir Elektrotechnika, 2006 There have been analyzed shift forces operating in the linear electromagnetic motor and it was disclosed that in a general case there are operating the components of three forces, and one force from them is the one that is functioning longitudinally to the horizontal axis and is considered to be useful force of attraction and there has been evaluated ...
Matkevičius, Edvardas +1 more
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