نتایج جستجو برای: harmonic load modelling
تعداد نتایج: 353246 فیلتر نتایج به سال:
The main purposes of the present work are devoted to the investigation of the free axial vibration, as well as the time-dependent and forced axial vibration of a SWCNT subjected to a moving load. The governing equation is derived through using Hamilton's principle. Eringen’s nonlocal elasticity theory has been utilized to analyze the nonlocal behaviors of SWCNT. A Galerkin method based on a clo...
A three-phase low-harmonic rectifier configuration is presented. For a large current variation load, the circuit designed to improve the waveform of the current drawn from the utility grid. Analytically obtained results are experimentally verified.
in this paper, an analytical study of the forced vibrations of hexapod table is studied. considering external force as a time sinusoid force, forced vibrations of the platform are investigated. resonance frequencies and vibrations of the moving platform are also calculated in different directions. the results of the analytical approach are verified using fem simulation. modelling the harmonic m...
Extraction Transformation Load plays an important phase in development of data warehouse due its complexity of selecting data from different location and having different structures. The recent industry of data warehouse is driven by Privacy Preserving Data Mining which ensures privacy of sensitive information during Mining and is a requirement of most Data Bases. Current approaches to modellin...
The key to controlling harmonics in high-speed railways is get information on its harmonic feature. In this study, a continuous 24 h observation carried out Ji'an West traction substation of typical Chinese railway. both the operating period and two train driving processes, features 27.5 kV buses are studied under multiple modes, which finds that voltage current content mainly consist low-order...
PerPot has been developed for modelling, simulating and optimising the interaction between load and performance in training processes in sport but can be used for modelling general physiological adaptation processes as well. The basic idea of PerPot is that a time-dependent load input feeds buffer potentials, from which a performance potential is fed by specifically delayed antagonistic flows (...
Transformers are normally designed and built for use at rated frequency and perfect sinusoidal load current. A non-linear load on a transformer leads to harmonic power losses which cause increased operational costs and additional heating in power system components. It leads to higher losses, early fatigue of insulation, premature failure and reduction of the useful life of the transformer. To p...
Transformers are normally designed and built for use at rated frequency and sinusoidal load current. A non-linear load on a transformer leads to harmonic power losses which cause increased operational costs and additional heating in transformer parts. It leads to higher losses, early fatigue of insulation, premature failure and reduction of the useful life of the transformer. To prevent these p...
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