Results 41 to 50 of about 26,388 (164)
New Approach for Voltage Drop Estimation in the Busbars of Workshop Networks at Higher Current Harmonics Influence [PDF]
Problems of the Regional Energetics, 2019 The presence of higher current harmonics has a negative impact on the efficiency and reliability of the elements of network. Higher current harmonics can lead to significant increases of resistance, voltage drop and active losses in busbar, also to ...
Kotsur M.I. +3 more
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A reverse mode of three-phase asynchronous motors with hexaphase windings
Electrical engineering & Electromechanics, 2014 A reverse operation feasibility in three-phase asynchronous motors with the stator hexaphase windings is proved. In the reverse mode, the hexaphase windings are shown to keep all their declared advantages.
V.D. Lushchyk, S.Yu. Polezin
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Harmonic higher and extended weight enumerators
Journal of Combinatorial Theory, Series A23 ...
Thomas Britz +2 more
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Methodology for Asynchronous Motor Impedance Measurement by Using Higher Order Harmonics
Energies, 2020 The control methods of asynchronous motors have changed during past decades. In the past, asynchronous motors were connected to grid directly. Later, thyristors as switching element-based frequency converters for asynchronous motors have appeared. Today,
Karolis Dambrauskas +4 more
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A Schwarz Lemma for harmonic and hyperbolic-harmonic functions in higher dimensions
Manuscripta Mathematica, 1992 The Laplace-Beltrami operators on the unit ball and the half-space \(\{x_ p>0\}\) of \(R^ p\) are defined respectively by \[ \Delta_ 0={1- \| x\|^ 2\over 4}\cdot\left(\Delta+{2(p-2)\over 1-\| x\|^ 2}\cdot\langle x,\text{grad}\rangle\right)\text{ and } \Delta_ +=x^ 2_ p\cdot\left(\Delta+{2-p\over x_ p}\cdot{\partial\over\partial x_ p}\right), \] and ...
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Nonlinear dynamical response of interacting bosons to synthetic electric field
Physical Review Research, 2020 We theoretically study the nonlinear response of interacting neutral bosonic gas in a synthetically driven one-dimensional optical lattice. In particular, we examine the bosonic analog of electronic higher harmonic generation in a strong time-dependent ...
Arko Roy, Soumya Bera, Kush Saha
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TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1985 高調波ひずみをもつ外力が非線形の高調波共振応答におよぼす影響を調べるため,Duffing形の一自由度系に三次の高調波を含む外力が作用する場合の三次の高調波共振応答を求めた.調和バランス法による数値解析の結果,外力高調波成分の値により応答曲線は3種類に分類されることがわかり,それらの形の発生に対する系パラメータ依存性を明らかにした.また,RKG法による直接数値解とも比較し,結果の妥当性を確認した.
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Thermal Aspect in Operation of Inductive Current Transformers and Transducers
EnergiesAn increase in the temperature of the magnetic core causes narrowing of its hysteresis loop and reduction in the saturation magnetic flux density. Therefore, at the same operating point on the magnetization characteristic, the nonlinear effect may become
Michal Kaczmarek, Artur Szczesny
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Grid integration and a power quality assessment of a wave-energy park
IET Smart Grid, 2019 This study presents a step toward the grid connection of a wave-energy park through an electric power conversion system (EPCS) developed and installed for the wave-energy harvesting in Lysekil, Sweden.
Arvind Parwal +10 more
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Superposition of Voltage Disturbances Generated by Direct Current Traction
EnergiesElectric traction vehicles require a power supply with appropriate voltage parameters. In Poland, a direct voltage power supply system has been adopted.
Zbigniew Olczykowski
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