Results 211 to 220 of about 23,183 (245)
Some of the next articles are maybe not open access.
International Journal of Circuit Theory and Applications, 2023
SummaryIn battery energy storage system (BESS) applications, the life of the battery depends on the quality of the charging/discharging current. However, the dual active bridge (DAB) converter, which interfaces BESS with the DC link, suffers from a backflow current in all modulation schemes, degrading the battery's performance.
T. S. Bheemraj +2 more
openaire +1 more source
SummaryIn battery energy storage system (BESS) applications, the life of the battery depends on the quality of the charging/discharging current. However, the dual active bridge (DAB) converter, which interfaces BESS with the DC link, suffers from a backflow current in all modulation schemes, degrading the battery's performance.
T. S. Bheemraj +2 more
openaire +1 more source
Quantum backflow, negative kinetic energy, and optical retro-propagation
Journal of Physics A: Mathematical and Theoretical, 2010For wavefunctions whose fourier spectrum (wavenumber or frequency) is positive, the local phase gradient can sometimes be negative; examples of this 'backflow' occur in quantum mechanics and optics. The backflow probability P (fraction of the region that is backflowing) is calculated for several cases.
openaire +2 more sources
Ion-Energy Diagnostics in an SPT-100 Plume from Thrust Axis to Backflow
Journal of Propulsion and Power, 2004Of primary concern with the integration of Hall thrusters on conventional satellite designs is the possible damaging effect of high-energy exhaust ions impinging upon spacecraft surfaces. This paper reports on measurements of plasma ion-energy distributions within the plume of an SPT-100 Hall thruster using a custom-designed molecular beam mass ...
King, Lyon B., Gallimore, Alec D.
openaire +2 more sources
The Backflow of Energy in a Optical Vortex Formed by Silver Spiral Zone Plate
2019 PhotonIcs & Electromagnetics Research Symposium - Spring (PIERS-Spring), 2019In this paper, we theoretically investigate the generation of optical vortices by amplitude spiral zone plate made in silver film. Influence of the direction of circularly polarization of incident light on the process of vortices formation is analyzed.
E. S. Kozlova, V. V. Kotlyar
openaire +1 more source
Controllable three-dimensional helical energy backflow in an optical focusing field
Optics LettersThe energy of light generally moves forward along the light propagation direction. However, in recent years, a counter-intuitive effect has been discovered that energy backflow can occur in certain special light fields. Presently, controlling the energy backflow of light for application requirements is becoming a significant challenge.
Wenshuan, Lu +5 more
openaire +2 more sources
The Research of an Energy Recovery with SRM during Backflow Period
Advanced Materials Research, 2013Facing the situation that battery life mileage is short and energy efficiency is low, The principle is introduced; control method of energy recovery during the backflow period and of improving the energy recovery efficiency in electronic operation are proposed. On the basis of a 500w switched reluctance motor, the mathematical model of SRM is built. In
openaire +1 more source
Journal of Luminescence, 2003
Abstract Strong enhancement of the Er-related 1.54 μm emission was obtained at room temperature from Er-doped porous silicon (PSi), when host PSi was slightly preoxidized at 900°C before Er incorporation. It was speculated that the formation of the oxide interlayer played an important role.
T. Kimura +6 more
openaire +1 more source
Abstract Strong enhancement of the Er-related 1.54 μm emission was obtained at room temperature from Er-doped porous silicon (PSi), when host PSi was slightly preoxidized at 900°C before Er incorporation. It was speculated that the formation of the oxide interlayer played an important role.
T. Kimura +6 more
openaire +1 more source
Energy backflow in tightly focused cylindrical vector beam with fractional order
Integrated Optics: Design, Devices, Systems and Applications VI, 2021Vladislav Zaitcev +2 more
openaire +1 more source
Optics Letters
We propose a facile method for enhancing on-axis energy backflow relative to forward energy flow in the focused fields. By employing higher-order Laguerre-Gaussian (LG) complex amplitude profiles for left-handed circularly polarized vortex beams, we numerically demonstrate the proposed method. It is shown that for incident LG beams
Lei Han, Jiale Qi, Chuchu Gao, Fuli Li
openaire +1 more source
We propose a facile method for enhancing on-axis energy backflow relative to forward energy flow in the focused fields. By employing higher-order Laguerre-Gaussian (LG) complex amplitude profiles for left-handed circularly polarized vortex beams, we numerically demonstrate the proposed method. It is shown that for incident LG beams
Lei Han, Jiale Qi, Chuchu Gao, Fuli Li
openaire +1 more source