Results 21 to 30 of about 3,946,788 (277)

Study of three-phase active power filter operation using non-sinusoidal voltage

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2016
The active power filter designed to compensate inactive power components. Aim: The aim of the study is to assess the quality of the three-phase active power filter in the distortion of the mains voltage supply, which is caused by the influence of non ...
R.V. Vlasenko, O.V. Bialobrzeski
doaj   +1 more source

Boundedness of the Hilbert transform on Besov spaces

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2020
The Hilbert transform along curves is of a great importance in harmonic analysis. It is known that its boundedness on $L^p(\mathbb{R}^n)$ has been extensively studied by various authors in different contexts and the authors gave positive results for some
A. Maatoug, S.E. Allaoui
doaj   +1 more source

P-Q Theory-based Dynamic Load Modelling in Short-Circuit Analysis

open access: yes2023 8th IEEE Workshop on the Electronic Grid (eGRID), 2023
Short-circuit analysis is essential for determining the fault current rating of different protection devices installed in a power system network. Usually, the inaccuracy in short-circuit current calculation is due to the fact of neglecting the effect of load during short circuit analysis.
Rajashekaraiah K.   +4 more
openaire   +3 more sources

K_l3 form factors at order p^6 in chiral perturbation theory [PDF]

open access: yes, 2001
This paper describes the calculation of the semileptonic K_l3 decay form factor at order p^6 of chiral perturbation theory which is the next-to-leading order correction to the well-known p^4 result achieved by Gasser and Leutwyler.
Post, P., Schilcher, K.
core   +2 more sources

Single-Phase Shunt Active Power Filter Based on a 5-Level Converter Topology

open access: yesEnergies, 2018
This paper presents a single-phase Shunt Active Power Filter (SAPF) with a multilevel converter based on an asymmetric full-bridge topology capable of producing five distinct voltage levels.
José Gabriel Oliveira Pinto   +5 more
doaj   +1 more source

Unique iterative solution for nonlinear fractional [BF](p,q)[KG-*2]-[BFQ][KG-*4]difference equation based on [BF]ψ-(h,r)[KG-*2]-[BFQ][KG-*4]concave operators

open access: yesJournal of Hebei University of Science and Technology, 2022
In order to enrich the basic theory of boundary value problems of fractional (p,q)[KG-*2]-[KG-*3]difference equations,the solvability of nonlocal problems for a class of nonlinear fractional (p,q)[KG-*2]-[KG-*3]difference equations was investigated ...
Jufang WANG, Si WANG, Changlong YU
doaj   +1 more source

Duality Cascade and Oblique Phases in Non-Commutative Open String Theory [PDF]

open access: yes, 2001
We investigate the complete phase diagram of the decoupled world-sheet theory of (P,Q) strings. These theories include 1+1 dimensional super Yang-Mills theory and non-commutative open string theory.
Chan, Chang S.   +2 more
core   +4 more sources

Three positive solutions for a nonlinear partial discrete Dirichlet problem with ( p , q ) $(p,q)$ -Laplacian operator

open access: yesBoundary Value Problems, 2022
In this paper, we prove the existence of three solutions to a partial difference equation with ( p , q ) $(p,q)$ -Laplacian operator by using critical point theory. Furthermore, based on the strong maximum principle, we prove that the three solutions are
Feng Xiong, Zhan Zhou
doaj   +1 more source

Composite Operators and Topological Contributions in Gauge Theory [PDF]

open access: yes, 2001
In $D$-dimensional gauge theory with a kinetic term based on the p-form tensor gauge field, we introduce a gauge invariant operator associated with the composite formed from a electric $(p-1)$-brane and a magnetic $(q-1)$-brane in $D=p+q+1$ spacetime ...
Han, Yeong Deok, Lee, Jungjai
core   +3 more sources

OPTIMAL TUNING OF PI-CONTROLLER OF SHUNT ACTIVE POWER FILTER FOR HARMONICS MITIGATION USING ENHANCED JUMPING SPIDER ALGORITHM [PDF]

open access: yesCarpathian Journal of Electrical Engineering, 2022
The increasing use of power electronic devices has resulted in harmonics that may cause in power systems overheating of equipment, poor power factor and voltage distortion.
Betrand N. ATANGA   +3 more
doaj  

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