Results 31 to 40 of about 46,345 (342)

Analysis of DC/DC Boost Converter–Full-Bridge Buck Inverter System for AC Generation

Energies, 2023
This paper presents an analysis and simulation of the mathematical model associated to the DC/DC Boost converter–full-bridge Buck inverter system to regulate the voltage output of the DC/DC Boost converter allowing bipolar voltages higher than the input ...
Víctor Hugo García-Rodríguez, José Humberto Pérez-Cruz, Roberto Carlos Ambrosio-Lázaro, Salvador Tavera-Mosqueda   +3 more
doaj   +1 more source

Flat optics for image differentiation

Nature Photonics, 2020
Image processing has become a critical technology in a variety of science and engineering disciplines. Although most image processing is performed digitally, optical analog processing has the advantages of being low-power and high-speed, but it requires a large volume.
You Zhou, Hanyu Zheng, Ivan I. Kravchenko, Jason Valentine   +3 more
openaire   +2 more sources

Active Steering and Driving/Braking Coupled Control Based on Flatness Theory and a Novel Reference Calculation Method

IEEE Access, 2019
Vehicle handing stability under the combined acceleration steering and braking steering conditions has a great impact on the vehicle safety. Therefore, the coupled steering and driving/braking stability control is essential.
Yuqiong Wang, Shuming Shi, Song Gao, Yi Xu, Pengwei Wang   +4 more
doaj   +1 more source

Uniqueness properties of the Kerr metric [PDF]

, 2000
We obtain a geometrical condition on vacuum, stationary, asymptotically flat spacetimes which is necessary and sufficient for the spacetime to be locally isometric to Kerr.
Beig R, Boyer R H, Bunting G L, Chrusciel P T, Ferrando J J, Garabedian R, Hall G S, Hall G S, Hawking S W, Israel W, Kennefick D, Kobayashi S, Kramer D, Marc Mars, Mars M A, Müller zum Hagen H, Senovilla J M M, Simon W, Weinstein G, Weinstein G   +19 more
core   +2 more sources

A Hierarchical Control Approach for Power Loss Minimization and Optimal Power Flow within a Meshed DC Microgrid

Energies, 2021
This work considers the DC part of a hybrid AC/DC microgrid with a meshed topology. We address cost minimization, battery scheduling and the power loss minimization within the power distribution network through constrained optimization. The novelty comes
Igyso Zafeiratou, Ionela Prodan, Laurent Lefévre   +2 more
doaj   +1 more source

D-branes on AdS flux compactifications [PDF]

, 2007
We study D-branes in N=1 flux compactifications to AdS_4. We derive their supersymmetry conditions and express them in terms of background generalized calibrations.
A. Font, A. Karch, A. Karch, A. Tomasiello, A.-K. Kashani-Poor, B.S. Acharya, B.S. Acharya, C. Jeschek, C. Kounnas, D. Cassani, D. Lüst, D.Z. Freedman, E. Bergshoeff, E.J. Hackett-Jones, F. Benini, G. Dvali, G. Villadoro, J. Evslin, J. Figueroa-O'Farrill, J. Gutowski, J. McGreevy, J.-B. Butruille, J.F.G. Cascales, J.P. Gauntlett, J.P. Gauntlett, K. Skenderis, L. Martucci, L. Martucci, L. Martucci, Luca Martucci, M. Graña, M. Graña, M. Graña, M. Graña, M. Gualtieri, M.T. Grisaru, O. Aharony, O. DeWolfe, P. Binetruy, P. Koerber, P. Koerber, P. Koerber, P. Koerber, P.G. Cámara, Paul Koerber, R.C. Myers, S. Chiossi, S.A. Cherkis, S.P. de Alwis   +48 more
core   +3 more sources

PIR Control Strategy of MMC-RPC Based on Differential Flatness Theory

机车电传动, 2020
In order to deal with the negative sequence, reactive power, harmonic and other power quality problems of traction power supply system, the power relationship between the left and right power supply arms of V/v transformer was analyzed, and the power ...
Pinggang SONG, Zhiqiang JIANG, Zhenbang ZHOU   +2 more
doaj  

Hierarchical Flatness-Based Control for Velocity Trajectory Tracking of the “DC/DC Boost Converter–DC Motor” System Powered by Renewable Energy

IEEE Access, 2023
In this investigation, a tracking control is designed for the angular velocity of the DC/DC Boost converter–DC motor system. To this end, the dynamics of the power supply, generated through a renewable energy power source, is considered in both ...
Ramon Silva-Ortigoza, Alfredo Roldan-Caballero, Eduardo Hernandez-Marquez, Rogelio Ernesto Garcia-Chavez, Magdalena Marciano-Melchor, Jose Rafael Garcia-Sanchez, Gilberto Silva-Ortigoza   +6 more
doaj   +1 more source

Generating Functions for Coherent Intertwiners

, 2012
We study generating functions for the scalar products of SU(2) coherent intertwiners, which can be interpreted as coherent spin network evaluations on a 2-vertex graph. We show that these generating functions are exactly summable for different choices of
Aquilanti V, Aquilanti V, Barrett J W Dowdall R J Fairbairn W J Gomes H Hellmann F Pereira R, Bonzom V, Bonzom V, Bonzom V, Borja E F, Borja E F, Costantino F Marché J, Dowdall R J, Dupuis M, Dupuis M, Dupuis M, Dupuis M Livine E R, Etera R Livine, Freidel L, Freidel L Hnybida J, Garoufalidis S van der Veen R, Girelli F, Labarthe J J, Livine E R, Livine E R Martín-Benito M, Schnetz O, Schwinger J, Valentin Bonzom, Varshalovich D A, Yu L, Yu L   +27 more
core   +1 more source

Deformations of calibrated D-branes in flux generalized complex manifolds [PDF]

, 2006
We study massless deformations of generalized calibrated cycles, which describe, in the language of generalized complex geometry, supersymmetric D-branes in N=1 supersymmetric compactifications with fluxes. We find that the deformations are classified by
A. Kapustin, A. Kapustin, A. Kapustin, A. Kapustin, C. Jeschek, C.M. Hull, D. Brecher, D. Brecher, D. Joyce, E. Sharpe, E. Witten, F. Gmeiner, F. Marchesano, G.R. Cavalcanti, J. De Boer, J. Gomis, J. Gutowski, L. Martucci, L. Martucci, L. Martucci, Luca Martucci, M. B. Green, M. Graña, M. Graña, M. Graña, M. Graña, M. Gualtieri, M. Gualtieri, M. Marino, M. Namba, M.R. Douglas, N. Hitchin, N.C. Leung, N.C. Leung, P. Grange, P. Griffiths, P. Koerber, P.S. Aspinwall, Paul Koerber, R. Minasian, R. Zucchini, R.C. McLean, R.P. Thomas, R.P. Thomas, S.H. Katz, V. Pestun, W.-Y. Chuang, Y. Li   +47 more
core   +4 more sources