Results 31 to 40 of about 110,149 (199)

Harmonic analysis of harmonic functions in the plane [PDF]

Proceedings of the American Mathematical Society, 1976
A continuous function on the complex plane is harmonic if and only if the span of its compositions with entire functions is not dense in the space of continuous functions in the topology of uniform convergence on compact sets.
openaire   +2 more sources

Harmonic conjugation in harmonic matroids

Discrete Mathematics, 2009
This paper was finished in 2008.
openaire   +2 more sources

Spatiotemporal phase-matching in capillary high-harmonic generation [PDF]

, 2012
We present a simple phase-matching model that takes into account the full spatiotemporal nature of capillary high-harmonic generation. Spectra predicted from the model are compared to experimental results for a number of gases and are shown to reproduce ...
Rogers, Edward T.F., Praeger, M., Grant-Jacob, James, Stebbings, Sarah L., Frey, Jeremy G., de Paula, A., Rogers, E., de Paula, Ana M., Froud, Christopher A., Brocklesby, William S., Mills, Benjamin, Grant-Jacob, J., Praeger, Matthew, Mills, B., Frey, J., Stebbings, S., Froud, C., Brocklesby, W.   +17 more
core   +1 more source

Fast-responding measurements of power system harmonics using discrete and fast fourier transforms with low spectral leakage [PDF]

, 2011
Conventional wisdom dictates that a Fast Fourier Transform (FFT) will be a more computationally effective method for measuring multiple harmonics than a Discrete Fourier Transform (DFT) approach.
Burt, Graeme M., Carter, R., Cruden, A., Roscoe, Andrew J.   +3 more
core   +3 more sources

Analysis of symmetrical components of harmonics for three phase power systems [PDF]

, 1986
Includes bibliographical references.Harmonic distortion of three phase power systems is caused by large amounts of electric power consumers using power electronic installations (e.g. drives and rectifiers). It has a number of undesirable consequences and
Shum, Kwan Leung
core   +1 more source

Future work on harmonics : some expert opinions part I : wind and solar power [PDF]

, 2014
A workshop on power system harmonics was organized in Stockholm in January 2014. On the agenda was among others a discussion on what are the main issues on harmonics at the moment and in the near future.
Desmet, Jan, Meyer, Jan,, Desmet, Jan,, Blanco, Ana Maria, Hortensia Amaris, Kocewiak, Lukasz,, Matthias Klatt, Ana Maria Blanco, Jan Meyer, Meyer, Jan, Kocewiak, Lukasz, Klatt, Mattias,, Gil de Castro, Aurora, Klatt, Matthias, Rönnberg, Sarah, Blanco, Ana María,, Math Bollen, Kai Yang, Gil-de-Castro, Aurora,, Bollen, Math, Bollen, Math,, Sarah Ronnberg, Jan Desmet, Amaris, Hortensia, Yang, Kai, Aurora Gil de Castro, Amaris, Hortensia,, Yang, Kai,, Lukasz Kocewiak, Rönnberg, Sarah,   +29 more
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Future work on harmonics : some expert opinions : part II : supraharmonics, standards and measurements [PDF]

, 2014
A workshop on power system harmonics was organized in Stockholm in January 2014. On the agenda was among others a discussion on what are the main issues on harmonics at the moment and in the near future.
Desmet, Jan, Meyer, Jan,, Desmet, Jan,, Blanco, Ana Maria, Hortensia Amaris, Kocewiak, Lukasz,, Matthias Klatt, Ana Maria Blanco, Jan Meyer, Meyer, Jan, Kocewiak, Lukasz, Gil de Castro, Aurora, Klatt, Matthias, Rönnberg, Sarah, Blanco, Ana María,, Math Bollen, Kai Yang, Bollen, Math, Bollen, Math,, de Castro, Aurora Gil,, Sarah Ronnberg, Jan Desmet, Amaris, Hortensia, Yang, Kai, Aurora Gil de Castro, Klatt, Matthias,, Amaris, Hortensia,, Yang, Kai,, Lukasz Kocewiak, Rönnberg, Sarah,   +29 more
core   +1 more source

A Comparative Analysis of MDSC-Based Phasor Estimation Technique for Digital Relays in Power System Protection

IEEE Access
Decaying DC offset frequently emerges as a major issue in power systems, especially under fault conditions. This leads to a distortion in the current waveform associated with the fault, which could significantly challenge protective and control ...
Mohanraj Bellie Subramani, Srinivas Gude, Chia-Chi Chu, Josep M. Guerrero   +3 more
doaj   +1 more source

HARMONIC ANALYSIS OF THE COMBINED CIRCUIT OF SINGLE-PHASE SWITCHING OF INDUCTION ELECTRIC DRIVE WITH THYRISTOR CONTROL

Electrical engineering & Electromechanics, 2020
Purpose. The purpose of this article is to provide a comparative analysis of influence of the phase controlled single-phase induction electric drive coordinates harmonic components on the operational characteristics of the electric drive under different ...
Yu. V. Shurub, Yu. L. Tsitsyurskiy
doaj   +1 more source

Experimental Studies of Power Quality Indicators of Autonomous Low-Power Generators

Energy Engineering and Control Systems
Experimental studies of the main indicators of power quality at the terminals of autonomous low-power generators were carried out. The content of higher voltage harmonics, as well as voltage and frequency deviations from the nominal value were determined.
Ivan Hlad, Vitalii Tsykh, Yaroslav Batsala   +2 more
doaj   +1 more source