Results 11 to 20 of about 4,626 (306)

Efficiency Evaluation of the Dual System Power Inverter for On-Grid Photovoltaic System

open access: yesEnergies, 2021
The implementation of a dual electric system that is capable of operating with either constant current and variable voltage, or constant voltage and variable current appliances, is one of the possible options to solve low-intensity stochastic energy ...
Jonas Vaicys   +5 more
doaj   +1 more source

Invertible Grayscale via Dual Features Ensemble [PDF]

open access: yesIEEE Access, 2020
Grayscale image colorization is known as an ill-posed problem because of the imbalanced matching between intensity and color values. Even given prior hints about the original color image, existing colorization methods cannot recover the original color image from grayscale faithfully.
Taizhong Ye   +3 more
openaire   +3 more sources

Classical dual-inverted-pendulum control [PDF]

open access: yes42nd IEEE International Conference on Decision and Control (IEEE Cat. No.03CH37475), 2004
A cart with two independent inverted pendula, called a dual-inverted-pendulum system, is analyzed and compared to the single-inverted-pendulum system using classical linear methods. Using only the angles of the pendula and the position of the cart, a classical controller is designed that stabilizes the pendula in the inverted position with the cart at ...
Kent H. Lundberg, James K. Roberge
openaire   +1 more source

On the Dual Frame Induced by an Invertible Frame Multiplier [PDF]

open access: yesSampling Theory in Signal and Image Processing, 2016
Recently it has been established that given an invertible frame multiplier with semi-normalized symbol, a specific dual of any of the two involved frames can be determined for the inversion purpose. The inverse can be represented as a multiplier with the reciprocal symbol, this particular dual of one of the given frames, and any dual of the other frame.
Stoeva, Diana T., Balazs, Peter
openaire   +4 more sources

Equivalent Input Disturbance-Based Control Design for Three Phase Dual-Stage Grid-Tied Photovoltaic System Considering Dead Time Effect

open access: yesFrontiers in Energy Research, 2021
Grid-tied inverter is the prominent component of the three-phase dual-stage photovoltaic (PV) grid-tied power generation system. However, the disturbances caused by dead time effect will pose the reduction of grid-tied current quality and even cause the ...
Fang Liu   +3 more
doaj   +1 more source

Dual-Sorted Inverted Lists in Practice [PDF]

open access: yes, 2012
We implement a recent theoretical proposal to represent inverted lists in memory, in a way that docid-sorted and weight-sorted lists are simultaneously represented in a single wavelet tree data structure. We compare our implementation with classical representations, where the ordering favors either bag-of-word queries or Boolean and weighted ...
Konow, Roberto, Navarro, Gonzalo
openaire   +3 more sources

Impact of PWM strategies on RMS current of the DC-link Voltage Capacitor of a dual-three phase drive [PDF]

open access: yes, 2014
The major drawback of usual dual three-phase AC machines, when supplied by a Voltage Source Inverter (VSI), is the occurrence of extra harmonic currents which circulate in the stator windings causing additional losses and constraints on the power ...
ROUHANA, Najib   +5 more
core   +1 more source

Orbifold Zeta Functions for Dual Invertible Polynomials [PDF]

open access: yesProceedings of the Edinburgh Mathematical Society, 2016
AbstractAn invertible polynomial innvariables is a quasi-homogeneous polynomial consisting ofnmonomials so that the weights of the variables and the quasi-degree are well defined. In the framework of the construction of mirror symmetric orbifold Landau–Ginzburg models, Berglund, Hübsch and Henningson considered a pair (f, G) consisting of an invertible
Ebeling, Wolfgang, Gusein-Zade, Sabir M.
openaire   +2 more sources

Dual-Sorted Inverted Lists [PDF]

open access: yes, 2010
Several IR tasks rely, to achieve high efficiency, on a single pervasive data structure called the inverted index. This is a mapping from the terms in a text collection to the documents where they appear, plus some supplementary data. Different orderings in the list of documents associated to a term, and different supplementary data, fit widely ...
Gonzalo Navarro 0001, Simon J. Puglisi
openaire   +1 more source

Direct torque control for dual three-phase induction motor drives [PDF]

open access: yes, 2004
A direct torque control (DTC) strategy for dual three-phase induction motor drives is discussed in this paper. The induction machine has two sets of stator three-phase windings spatially shifted by 30 electrical degrees.
Profumo, Francesco   +10 more
core   +1 more source

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