Results 81 to 90 of about 532,990 (304)

IGBT Dynamic Loss Reduction through Device Level Soft Switching

Energies, 2018
Due to its low conduction loss, hence high current ratings, as well as low cost, Silicon Insulated Gate Bipolar Transistor (Si IGBT) is widely used in high power applications.
Lan Ma, Hongbing Xu, Alex Q. Huang, Jianxiao Zou, Kai Li   +4 more
doaj   +1 more source

Zero-Current-Switched Three-Phase SVM-Controlled Buck Rectifier

IEEE Transactions on Industrial Electronics, 2005
A zero-current-transition (ZCT) cell is analyzed and designed to be used with a three-phase pulsewidth-modulation buck rectifier. This rectifier was space-vector controlled and used unidirectional current switches. The proposed ZCT circuit is load independent and achieves a high noise and voltage stress reduction and provides ZCTs to almost all ...
Sanchis Kilders, Esteban, Maset Sancho, Enrique, Carrasco, J.A., Ejea Martí, Juan Bautista, Ferreres Sabater, Agustín, Dede García-Santamaría, Enrique, Esteve Gómez, Vicente, Jordán Martínez, José, García Gil, Rafael   +8 more
openaire   +2 more sources

A classical statistical model for distributions of escape events in swept-bias Josephson junctions

, 2012
We have developed a model for experiments in which the bias current applied to a Josephson junction is slowly increased from zero until the junction switches from its superconducting zero-voltage state, and the bias value at which this occurs is recorded.
A. J. Leggett, James A. Blackburn, Matteo Cirillo, N. Grønbech-Jensen, Niels Grønbech-Jensen, T. van Duzer   +5 more
core   +1 more source

Circular‐Polarization‐Sensitive Organic Photodetectors with a Chiral Nanopatterned Electrode Inverse‐Designed by Genetic Algorithm

Advanced Functional Materials, EarlyView.
A chiral photodetector capable of selectively distinguishing left‐ and right‐handed circularly polarized light is experimentally demonstrated. The device, which features a nanopatterned electrode inverse‐designed by a genetic algorithm within a metal–dielectric–metal nanocavity that incorporates a vacuum‐deposited small‐molecule multilayer, exhibits ...
Kyung Ryoul Park, Jewoong Lee, In‐Suk Choi, Changsoon Kim   +3 more
wiley   +1 more source

An Isolated Active-Clamped Circuit Current-Fed Half-Bridge Converter

Eletrônica de Potência
This paper presents an isolated regenerative active-clamped circuit designed for the current-fed half-bridge (IRACCFHB) converter. Its primary function is to reduce high voltage spikes across the main switches caused by energy stored in the leakage ...
Glauco E. R da Silva, Carlos M. de O. Stein , Jean P. da Costa , Emerson G. Carati, Rafael Cardoso, Gustavo W. Denardin, Jhon B. B. Quispe   +6 more
doaj   +1 more source

Study of switching transients in high frequency converters [PDF]

As the semiconductor technologies progress rapidly, the power densities and switching frequencies of many power devices are improved. With the existing technology, high frequency power systems become possible. Use of such a system is advantageous in many
Elbuluk, Malik E., Lee, Tony, Zinger, Donald S.   +2 more
core   +1 more source

Zero Field precession and hysteretic threshold currents in spin torque oscillators with tilted polarizer

, 2008
Using non-linear system theory and numerical simulations we map out the static and dynamic phase diagram in zero applied field of a spin torque oscillator with a tilted polarizer (TP-STO).We find that for sufficiently large currents, even very small tilt
C L Zha, Fang Y Y Zha C L Akerman J, Hubbard J H, Johan Åkerman, Khalil H K, Lu B Weller D, Perko L, S Bonetti, Yan Zhou, Zhou Y Akerman J   +9 more
core   +1 more source

Intermittent control models of human standing: similarities and differences [PDF]

, 2014
Two architectures of intermittent control are compared and contrasted in the context of the single inverted pendulum model often used for describing standing in humans.
A Bottaro, A Bottaro, AD Kuo, AD Kuo, AV Alexandrov, B Brembs, C Kamp van de, CD Marsden, CS Sherrington, D Kleinman, D McRuer, DL Kleinman, E Ronco, E Todorov, F Navas, G Balazsi, G Stepan, GC Goodwin, H Kooij Van Der, H Kooij Van Der, H Kwakernaak, Henrik Gollee, I Giulio Di, Ian Loram, ID Loram, ID Loram, ID Loram, ID Loram, ID Loram, IJ Pinter, J Pruszynski, JC Rothwell, KJ Craik, KJ Craik, LA Montestruque, M Günther, M Günther, M Günther, M Lakie, M Wolpert Daniel, Martin Lakie, N Bhushan, OJM Smith, P Cisek, P Gawthrop, P Gawthrop, P Kowalczyk, P Redgrave, PD Neilson, PE Dux, Peter Gawthrop, PJ Gawthrop, PJ Gawthrop, PJ Gawthrop, PJ Gawthrop, R Fitzpatrick, R Lozano, R Pintelon, RC Miall, RC Miall, RJ Peterka, S Baron, S Hanneton, SA Safavynia, T Insperger, V Zhivoglyadov Peter, VB Brooks, Y Asai, Y Suzuki   +68 more
core   +4 more sources

Meta‐Rod Mechanical Metamaterials With Programmable Reconfiguration

Advanced Functional Materials, EarlyView.
Existing mechanical metamaterials achieve programmable large deformations in planar square or cubic configurations, restricted by required complex boundary conditions. This research proposes a 1D metamaterial, Meta‐rod, with linear, bending, twisting, area, and volume deformation modes.
Atharva Pande, Lyes Kadem, Hang Xu
wiley   +1 more source

Research on a Three-Phase Soft-Switching Inverter Based on a Simple Auxiliary Snubber Circuit

Energies
This study presents a novel soft-switching inverter distinguished by a simplified topology and an innovative modulation approach. The design aims to optimize the energy conversion processes commonly found in auxiliary snubber circuits.
Dawei Dai, Hua Zheng
doaj   +1 more source