Results 31 to 40 of about 36,246,621 (297)

The p-q theory for active filter control: some problems and solutions [PDF]

open access: yesSba: Controle & Automação Sociedade Brasileira de Automatica, 2004
The instantaneous active and reactive power theory or the p-q Theory is widely used to design controllers for active filters. This paper deals with some problems due to the misinterpretations of this theory. A historical background of the theory is presented and the problem caused by distorted voltages at the point of common connection (PCC) is ...
Watanabe, Edson H.   +2 more
openaire   +3 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

Positive solutions for nonlocal problems of nonlinear (p,q)- difference equations

open access: yesJournal 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

The linear complexity of whiteman's generalized cyclotomic sequences of period p {m+1}q n+1 [PDF]

open access: yes, 2012
In this paper, we mainly get three results. First, let p, q be distinct primes with \gcd ((p-1)p,(q-1)q)=\gcd (p-1,q-1)=e ; we give a method to compute the linear complexity of Whiteman's generalized cyclotomic sequences of period p^{m+1}q n+1.
Hu, L, Wang, M, Yue, Q
core   +1 more source

Chern-Simons Theory on L(p,q) Lens Spaces and Localization [PDF]

open access: yesJournal of the Korean Physical Society, 2019
Using localization technique, we calculate the partition function and the expectation value of Wilson loop operator in Chern-Simons theory on general lens spaces L(p,q)(including S2XS1). Our results are consistent with known results.
openaire   +2 more sources

Digital controller for active power filter based on P-Q theory under non-ideal main voltages [PDF]

open access: yes, 2021
This paper proposes a control strategy active power filter under non-ideal main voltages. The P-Q Theory is used to generate three-phase active power filter reference currents, but the P-Q Theory has a weakness when implemented under non ideal main ...
Jauhari, Moh.   +5 more
core   +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

(p,q)-Baskakov-Kantorovich Operators [PDF]

open access: yes, 2016
In the last decade the applications of quantum calculus in the field of approximation theory is an active area of research. The (p,q)-calculus is further extension of q-calculus, which provides a new direction for researchers.
Gupta, Vijay
core   +1 more source

P-algebras and Q-algebras

open access: yes, 2010
Electronic Thesis or DissertationWe define two classes of algebras P- and Q-, which are derived from the definitions of BCK- and BCI- algebras. The birth of P-algebras is based on the symmetric difference in set theory.
Mahawanniarachchi, Padmal Sathyajith
core   +2 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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