Results 11 to 20 of about 3,946,788 (277)

A Novel Controller Based on Single-Phase Instantaneous p-q Power Theory for a Cascaded PWM Transformer-less STATCOM for Voltage Regulation [PDF]

open access: yesJournal of Operation and Automation in Power Engineering, 2018
In this paper, dynamic performance of a transformerless cascaded PWM static synchronous shunt compensator (STATCOM) based on a novel control scheme is investigated for bus voltage regulation in a 6.6kV distribution system.
M. Abbasi, B. Tousi
doaj   +1 more source

THE DEFINABLE (P, Q)-THEOREM FOR DISTAL THEORIES [PDF]

open access: yesThe Journal of Symbolic Logic, 2017
AbstractAnswering a special case of a question of Chernikov and Simon, we show that any non-dividing formula over a model M in a distal NIP theory is a member of a consistent definable family, definable over M.
Boxall, Gareth, Kestner, Charlotte
openaire   +3 more sources

Effective actions for loop quantum cosmology in fourth-order gravity

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
Loop quantum cosmology (LQC) is a theory which renders the Big Bang initial singularity into a quantum bounce, by means of short-range repulsive quantum effects at the Planck scale.
Marcello Miranda   +3 more
doaj   +1 more source

Combining decision procedures for the reals [PDF]

open access: yesLogical Methods in Computer Science, 2006
We address the general problem of determining the validity of boolean combinations of equalities and inequalities between real-valued expressions.
Jeremy Avigad, Harvey Friedman
doaj   +1 more source

Modelling of 3-Phase p-q Theory-Based Dynamic Load for Real-Time Simulation

open access: yesIEEE Open Access Journal of Power and Energy, 2023
This article proposes a new method of modelling dynamic loads based on instantaneous p-q theory, to be employed in large powers system network simulations in a digital real-time environment.
Karthik Rajashekaraiah   +3 more
doaj   +1 more source

A note on (p,q) $(p,q)$-Bernstein polynomials and their applications based on (p,q) $(p,q)$-calculus

open access: yesJournal of Inequalities and Applications, 2018
Nowadays (p,q) $(p,q)$-Bernstein polynomials have been studied in many different fields such as operator theory, CAGD, and number theory. In order to obtain the fundamental properties and results of Bernstein polynomials by using (p,q) $(p,q)$-calculus ...
Erkan Agyuz, Mehmet Acikgoz
doaj   +1 more source

Power Transformers Differential Protection Using the p-q Power Theory [PDF]

open access: yes, 2012
This paper describes the application of the p-q power theory to the differential protection of power transformers. The information provided by the harmonic content of the differential active and reactive power components is used to detect winding insulation failures and to distinguish them from magnetizing inrush current transients.
Oliveira, L. M. R.   +1 more
openaire   +3 more sources

Generating functions for the universal Hall-Littlewood $P$- and $Q$-functions [PDF]

open access: yes, 2018
Recently, P. Pragacz described the ordinary Hall-Littlewood $P$-polynomials by means of push-forwards (Gysin maps) from flag bundles in the ordinary cohomology theory. Together with L.
Nakagawa, Masaki, Naruse, Hiroshi
core   +2 more sources

Signed Selmer Groups over p-adic Lie Extensions [PDF]

open access: yes, 2011
Let $E$ be an elliptic curve over $\mathbb{Q}$ with good supersingular reduction at a prime $p\geq 3$ and $a_p=0$. We generalise the definition of Kobayashi's plus/minus Selmer groups over $\mathbb{Q}(\mu_{p^\infty})$ to $p$-adic Lie extensions $K_\infty$
Lei, Antonio, Zerbes, Sarah Livia
core   +3 more sources

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

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