Results 31 to 40 of about 175,835 (309)
Testing Sensitivity of A-Type Residual Current Devices to Earth Fault Currents with Harmonics
Sensors, 2020 In many applications, modern current-using equipment utilizes power electronic converters to control the consumed power and to adjust the motor speed. Such equipment is used both in industrial and domestic installations.
Stanislaw Czapp
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The Power Losses in Cable Lines Supplying Nonlinear Loads
Energies, 2021 This paper presents the skin effect impact on the active power losses in the sheathless single-core cables/wires supplying nonlinear loads. There are significant conductor losses when the current has a distorted waveform (e.g., the current supplying ...
Bartosz Rozegnał +4 more
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, 2001 The generation of harmonics of the voltage response is considered when an AC current is applied through a superconducting film above T_c. It is shown that almost at all temperatures the mechanism of the temperature oscillations created by the AC current ...
Chéenne, Nicolas +3 more
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Digital Current-Control Schemes [PDF]
, 2009 The paper is about comparing the performance of digital signal processor-based current controllers for three-phase active power filters. The wide use of nonlinear loads, such as front-end rectifiers connected to the power distribution systems for dc ...
Bojoi, Iustin Radu +3 more
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Tikrit Journal of Engineering Sciences, 2018 The aim of this paper is to analyze the influence of adding serial inductance in AC side of the 3ph -6 pulse bridge rectifier on the reduction of harmonic distortion rate. A simulated model with serial inductance was analyzed.
Ghanim Thiab Hasan +2 more
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IEEE Open Journal of Power Electronics, 2020 This paper presents a spatial harmonics compensation method for mutually coupled switched reluctance machines (MCSRMs) with sinusoidal current excitation. The regulation by linear controllers to achieve sinusoidal currents in MCSRMs is challenging due to
Peter Azer +2 more
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Vascular dementia: current concepts and nomenclature harmonization [PDF]
Dementia & Neuropsychologia, 2012 ABSTRACT Several types of cerebrovascular lesions are associated with cognitive decline, but the role of each type in dementia manifestation has yet to be determined. One of the greatest barriers of conducting clinicopathological studies in vascular dementia concerns the overlapping of nomenclature for these lesions.
openaire +7 more sources
Appearance of Negative Differential Conductivity in Graphene Nanoribbons at High-Harmonics
, 2012 We theoretically study current dynamics of graphene nanoribbons subject to bias dc and ac driven fields. We showed that graphene nanoribbons exhibit negative high-harmonic differential conductivity.
Abukari, S. S., Mensah, S. Y., Rabiu, M.
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Improved current-regulated delta modulator for reducing switching frequency and low-frequency current error in permanent magnet brushless AC drives [PDF]
, 2005 The conventional current-regulated delta modulator (CRDM) results in a high current ripple and a high switching frequency at low rotational speeds, and in low-frequency current harmonics, including a fundamental current error, at high rotational speeds ...
Howe, D., Wipasuramonton, P., Zhu, Z.Q.
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Current Harmonic Suppression for Dual Three-Phase Permanent Magnet Synchronous Motor Drives
IEEE Access, 2019 Due to motor asymmetry and system nonlinear factors, the dual three-phase permanent magnet synchronous motor (PMSM) drives produce a large number of current harmonics during operation. Based on the Vector Space Decoupling model, the six-phase currents of
Zhihuang Ruan, Wenxiang Song, Yan Yan
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