Results 11 to 20 of about 1,755,289 (266)
Quasi-Static Current Measurement with Field-Modulated Spin-Valve GMR Sensors [PDF]
Sensors, 2019 A non-contact current measurement device comprised of a GMR sensor and a ferrite ring core was investigated. The sensor chip employed a high-sensitivity spin-valve full-bridge GMR sensor of which the direct output has non-negligible hysteresis and a ...
Jen-Tzong Jeng +3 more
doaj +2 more sources
Circular Array of Magnetic Sensors for Current Measurement: Analysis for Error Caused by Position of Conductor [PDF]
Sensors, 2018 This paper analyzes the measurement error, caused by the position of the current-carrying conductor, of a circular array of magnetic sensors for current measurement. The circular array of magnetic sensors is an effective approach for AC or DC non-contact
Hao Yu, Zheng Qian, Huayi Liu, Jiaqi Qu
doaj +2 more sources
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
doaj +1 more source
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
openaire +2 more sources
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
openaire +2 more sources
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
doaj +1 more source
Accurate Parameters Identification of a Supercapacitor Three-Branch Model
IEEE Access, 2023 Supercapacitors are becoming increasingly important storage system components. To effectively control their terminal voltage, even in real time, numerous circuit models capable of faithfully simulating their behavior in energy systems and various ...
Mauro Zucca +3 more
doaj +1 more source