Results 11 to 20 of about 1,678,146 (266)
Characterizing Semiconductor Devices for All-Electric Aircraft
IEEE Access, 2023 Cryogenic propulsion with hydrogen fuel cells replacing fossil fuels is a promising solution to cut carbon emissions in the aviation sector. Hydrogen will also be used for cooling the superconducting machines and power converter circuits.
Abdelrahman Elwakeel +7 more
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Improved 3-Phase Current Transducer
Proceedings, 2018 We propose improved contactless DC/AC current transducer for 3-phase current lines based on 8 integrated fluxgate sensors. Using proper processing we ideally achieve a complete suppression of external homogeneous fields, and field gradients up to the 4th
Pavel Ripka +2 more
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Improved Method for Determining Voltage Unbalance Factor Using Induction Motors
Energies, 2022 This work shows an alternative method to determine the Voltage Unbalance Factor in a power grid by using both the mean value of the line voltages and Current Unbalance Factor in induction motors. Twenty unbalanced voltage points on three induction motors
Luis Guasch-Pesquer +3 more
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Conductivity and the current–current correlation measure [PDF]
Journal of Physics A: Mathematical and Theoretical, 2010 We review various formulations of conductivity for one-particle Hamiltonians and relate them to the current-current correlation measure. We prove that the current-current correlation measure for random Schrödinger operators has a density at coincident energies provided the energy lies in a localization regime.
Combes, J. M. +2 more
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Alternate current measurement [PDF]
Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1908 Abstract The lack of precision of measurements with alternate currents, as compared with those using direct currents, is mainly due to the relative sensitiveness of the instruments available for such tests. The fact that the turning moment acting on the moving system depends in one case on the square of the current and in the other on
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Research progress of all fiber optical current sensors in power system
Xi'an Gongcheng Daxue xuebao, 2023 The measuring current of the traditional electromagnetic transformer is vulnerable to electromagnetic interference and the insulation cost is high, to solve the problem, the all fiber technology has been applied in the power system with its advantages of
GAO Chao +6 more
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Measurement of Coastal Currents
Coastal Engineering 1968, 1968 Getting a drift buoy into and over the surf zone in rough weather has always been a problem. A cheap, cold propellant rocket launcher using either compressed air from aqua-lung bottles or liquid carbon dioxide is admirably suited for hurling drift bottles to ranges of over 1,000 feet.
J.M. Zeigler, H.J. Tasha
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Modeling and Analyzing the Mutual Inductance of Rogowski Coils of Arbitrary Skeleton
Sensors, 2019 There are Rogowski coils of various shapes in the on-site measurement, and it is difficult to calculate the electrical quantities of Rogowski coils of curved skeleton and circular cross-section by simulation software.
Xiaoyu Liu, Hui Huang, Chaoqun Jiao
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Measurement of Dielectric Liquid Electrification in the Shuttle System with Two Parallel Electrodes
Energies, 2021 In this paper, a device with swinging plate electrodes has been proposed to measure contact electrification of a liquid sample. The proposed structure is composed of two parallel metallic plates immersed in a dielectric liquid.
Dariusz Zmarzły, Paweł Frącz
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Journal of Thermal Science and Technology, 2009 In a polymer electrolyte fuel cell (PEFC), the current density through the polymer electrolyte membrane (PEM) is distributed along the electrode on the membrane electrode assembly (MEA).
Yasuo YOKOUCHI +3 more
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