Results 11 to 20 of about 29,687,790 (256)
Modelling and analysis of equivalent SISO d-q impedance of grid-connected converters
, 2021 Small-signal stability of three-phase grid-connected converters can be analysed by using the impedance-based method in d-q frame. Based on this approach, the d-q impedance models of both source and load subsystems are represented with 2-by-2 matrices ...
Khodamoradi A. +3 more
core +1 more source
The invariant rings of the Sylow groups of GU(3,q2), GU(4,q2), Sp(4,q) and O+(4,q) in the natural characteristic [PDF]
, 2016 Let G be a Sylow p -subgroup of the unitary groups GU(3,q2)GU(3,q2), GU(4,q2)GU(4,q2), the symplectic group Sp(4,q)Sp(4,q) and, for q odd, the orthogonal group O+(4,q)O+(4,q).
Fleischmann, Peter +2 more
core +1 more source
Positive solutions for nonlocal problems of nonlinear (p,q)- difference equations
Journal of Hebei University of Science and Technology, 2021 In order to improve the basic theory of boundary value problems for nonlinear quantum difference equations,in this paper,we study the solvability of nonlocal problems for second order three-point nonlinear (p,q)-difference equations.Firstly,the Green ...
Changlong YU +3 more
doaj +1 more source
Boundedness of the Hilbert transform on Besov spaces
Karpatsʹkì 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
High-Q bismuth silicate nonlinear glass microsphere resonators [PDF]
, 2012 The fabrication and characterization of a bismuth-silicate glass microsphere resonator has been demonstrated. At wavelengths near 1550 nm, high-modes can be efficiently excited in a 179 µm diameter bismuth-silicate glass microsphere via evanescent ...
Ding, M. +18 more
core +1 more source
Boundary 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
q-Differential equations for q-classical polynomials and q-Jacobi-Stirling numbers [PDF]
, 2016 We introduce, characterise and provide a combinatorial interpretation for the so-called q-Jacobi–Stirling numbers. This study is motivated by their key role in the (reciprocal) expansion of any power of a second order q-differential operator having the
Zeng, Jiang +5 more
core +1 more source
Single-Phase Shunt Active Power Filter Based on a 5-Level Converter Topology
Energies, 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
Journal 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
On the Use of the p-q Theory for Harmonic Current Cancellation with Shunt Active Filters
Advances in Electrical and Electronic Engineering, 2019 Discussion and mathematical proof on necessary and sufficient conditions for the application of the {p-q} theory for compensating the harmonic currents consumed by non-linear load using a shunt active filter are presented.
Federico Martin Serra +3 more
doaj +1 more source