Results 101 to 110 of about 182,163 (309)

Laser‐Welded Cellulose‐Carbon Nanotube Nanocomposites as a 3D Scaffold of Si Anodes for High‐Performance Lithium‐Ion Batteries

Advanced Functional Materials, EarlyView.
A Si anode comprising entangled networks of cellulose and SWCNT (C‐CNT) nanocomposites as an anode electrode for a high‐performance LIB is realized by fully utilizing the generated microstructure of a novel conductive 3D scaffold via a low‐temperature and eco‐friendly process. Additionally, localized heating via photo‐thermal conversion can be utilized
Boeun Ryu, Younghoon Jung, Hojin Son, Min‐Young Kim, Jinsub Lim, Changhun Yun   +5 more
wiley   +1 more source

Domain Wall Rebounds Driven by Competing Entropic and Spin‐Transfer Torques in Cylindrical Nanowires

Advanced Functional Materials, EarlyView.
Domain‐wall motion in cylindrical magnetic nanowires driven by nanosecond current pulses. Low current densities efficiently displace domain walls, whereas higher currents cause rebound at the wire ends. The effect results from the interplay between spin‐transfer torque and thermally induced processes, highlighting the role of thermal gradients in ...
Elias Saugar, Jorge Marqués‐Marchán, Sara Catalano, Agustina Asenjo, Michael Foerster, Miguel Angel Niño, Manuel Vazquez, Fèlix Casanova, Arantxa Fraile Rodríguez, Rafael P. Del Real, Oksana Chubykalo‐Fesenko, Cristina Bran   +11 more
wiley   +1 more source

A közvetlen nyomatékszabályozás elve, megvalósítása, és főbb tulajdonságai aszinkron motoros hajtások esetében [PDF]

, 2014
Field oriented control (FOC) is a widespread method in the controlling of AC induction motors requirring high dynamic performance. However, this method has numerous drawbacks.
Rácz, György, Számel, László, Vajsz, Tibor   +2 more
core  

How to Chemically Protect PFAS‐Free Membranes in Fuel Cells: Radical Quenching Poly(vinylphosphonic acid) Layer

Advanced Functional Materials, EarlyView.
Hydrocarbon membranes are a greener alternative to PFSA in PEM fuel cells, but degrade rapidly from radical attack. We present a novel strategy using poly(vinylphosphonic acid) (PVPA) as a local radical scavenger. Incorporated as an interfacial barrier, PVPA enhances chemical stability and significantly extends membrane lifetime under accelerated ...
Hendrik Sannemüller, Hannes Liepold, Frederik Brendel, Janka Friese, Carolin Klose, Tym de Wild, Andreas Münchinger   +6 more
wiley   +1 more source

Performance enhancement of sensorless induction motor drive using modified direct torque control techniques for traction application

Alexandria Engineering Journal
In recent scenarios, induction motors are used in many different fields due to their small size, advanced technology, and capacity to handle large amounts of power.
S. Usha, P. Geetha, A. Geetha, R. Palanisamy, T.M. Thamizh Thentral, Bidyut Mahato, Nimay Chandra Giri, Mohammed Alharbi   +7 more
doaj   +1 more source

Conductive Bonding and System Architectures for High‐Performance Flexible Electronics

Advanced Functional Materials, EarlyView.
This review outlines bonding technologies and structural design strategies that support high‐performance flexible and stretchable electronics. Bonding approaches such as surface‐activated bonding and anisotropic conductive films, together with system‐level architectures including buffer layers and island‐bridge structures, possess distinct mechanical ...
Kazuma Nakajima, Kenjiro Fukuda
wiley   +1 more source

REDUCTION OF RIPPLE FOR DIRECT TORQUE CONTROLLED THREE PHASE INDUCTION MOTOR BASED ON A PREDICTIVE CONTROL TECHNIQUE

Journal of Engineering and Sustainable Development, 2018
Direct torque control is one of the among control schemes for alternating current drives. It has a simple structure, fast control, is robust, and has good performance.
Adel Ahmed obed, Mais Abdul Hameed Salman   +1 more
doaj  

Model Predictive Direct Torque Control and Fuzzy Logic Energy Management for Multi Power Source Electric Vehicles. [PDF]

Sensors (Basel), 2022
Kakouche K, Rekioua T, Mezani S, Oubelaid A, Rekioua D, Blazek V, Prokop L, Misak S, Bajaj M, Ghoneim SSM.   +9 more
europepmc   +1 more source

MAGTWIST: A Magnetically‐Driven Rotary Actuator Using a Traveling‐Wave With Integrated Stiffness Tunability

Advanced Functional Materials, EarlyView.
MAGTWIST: A compact magnetic rotary actuator, enabling smooth, stepless rotation, and on‐demand locking. Inspired by peristalsis, a soft polymer belt generates a traveling‐wave, enabling 270° rotation when heated. Cooling stiffens the belt, locking it in position and enabling it to withstand high loads.
Simon Frieler, Jean‐Paul P.M. de Vries, Sarthak Misra, Venkatasubramanian Kalpathy Venkiteswaran   +3 more
wiley   +1 more source

Improved Direct Torque Control for Induction Machine Drives Based on Fuzzy Sector Theory

Iranian Journal of Electrical and Electronic Engineering, 2010
Here, a new fuzzy direct torque control algorithm for induction motors is proposed. As in the classical direct torque control, the inverter gate control signals directly come from the optimum switching voltage vector look-up table, the best voltage ...
M. M. Rezaei, M. Mirsalim
doaj