Results 1 to 10 of about 1,271 (116)
Electromagnetic phenomena analysis in brushless DC motor with speed control using PWM method
Open Physics, 2017 Field-circuit model of a brushless DC motor with speed control using PWM method was developed. Waveforms of electrical and mechanical quantities of the designed motor with a high pressure vane pump built in a rotor of the motor were computed. Analysis of
Ciurys Marek Pawel
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Electromagnetic Phenomena in Superconductors
IEEJ Transactions on Fundamentals and Materials, 2009 Electromagnetic phenomena in superconductors are reviewed. In superconductor in a transverse magnetic field, the electromagnetic phenomena are described by the critical state model assuming a balance between the Lorentz force and pinning force. In this case the Josephson equation for the induced electric field, E = B × v, holds for the motion of flux ...
Teruo Matsushita
exaly +2 more sources
Natural Electromagnetic Phenomena and Electromagnetic Theory: A Review
IEEJ Transactions on Fundamentals and Materials, 2004 We review the new findings on natural electromagnetic phenomena in the near-Earth environment and will show the importance of electromagnetic analyses in elucidating the essential points of these phenomena. The topics include (1) atmospheric phenomena related to lightning (e.g.
M Hayakawa +2 more
exaly +3 more sources
Electromagnetic Phenomena Associated with Earthquakes
IEEJ Transactions on Fundamentals and Materials, 2006 Electromagnetic phenomena are recently found to take place prior to an earhquake, and they are regarded as the most promising candidate for short-term earthquake prediction. This report reviews the recent findings on seismo electromagnetic phenomena, including ULF emissions, seismo-atmospheric and -ionospheric perturebations, Earth's surface ...
M Hayakawa
exaly +2 more sources
Multi Physical Field Simulation of Quadrupole Compound Rail Electromagnetic Launcher [PDF]
Hangkong bingqi, 2022 In the working process of quadrupole composite rail electromagnetic launcher, there will be many phenomena such as structural deformation, temperature change and electromagnetic interference.
Ren Shida, Feng Gang, Liu Shaowei, Li Tengda, Bai Nan
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Recent Advances and Challenges in the Seismo-Electromagnetic Study: A Brief Review
Remote Sensing, 2022 Due to their potential application in earthquake forecasting, seismo-electromagnetic phenomena were intensively studied for several decades all over the world.
Hongyan Chen, Peng Han, Katsumi Hattori
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Field model of electromechanical phenomena in the linear drive with permanent magnets [PDF]
Biuletyn Wojskowej Akademii Technicznej, 2017 The article presents problems of modelling and analysis of a linear permanent magnet electromagnetic drive taking into account basic physical phenomena. The Comsol Multiphysics environment based on the finite element method (FEM) is used in the magnetic ...
Krzysztof Just, Wojciech Tarnowski
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On the fluctuation spectra of seismo-electromagnetic phenomena [PDF]
Natural Hazards and Earth System Sciences, 2011 In order to increase the credibility on the presence of electromagnetic phenomena associated with an earthquake, we have suggested the importance of the modulation (or fluctuation) seen in the time-series data of any seismogenic effects.
M. Hayakawa
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Diurnal variation of turbulence-related quantities in Lake Garda
Advances in Oceanography and Limnology, 2014 To determine diurnal variations in the physical and biological state of Lake Garda in early spring, high-resolution measurements were made of the vertical distribution of temperature and fluorescence in the upper 100 meters during 5–7 March 2014. In this
W.K. Lenstra +11 more
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Rethinking earthquake-related DC-ULF electromagnetic phenomena: towards a physics-based approach [PDF]
Natural Hazards and Earth System Sciences, 2011 Numerous electromagnetic changes possibly related with earthquakes have been independently reported and have even been attempted to apply to short-term prediction of earthquakes.
Q. Huang
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