Results 101 to 110 of about 74,738 (303)

Torque behavior of one-phase permanent magnet AC motor [PDF]

open access: yes, 2006
This paper presents a detailed comparative study of two starting and running methods for a single-phase permanent magnet synchronous motor, equipped with a squirrel-cage rotor. The analysis of the motor performance is realized for a pulse width modulated
McGilp, M.I.   +5 more
core   +1 more source

Control of Polarization and Polar Helicity in BiFeO3 by Epitaxial Strain and Interfacial Chemistry

open access: yesAdvanced Functional Materials, EarlyView.
In BiFeO3 thin films, the interplay of interfacial chemistry, electrostatics, and epitaxial strain is engineered to stabilize homohelicity in polarization textures at the domain scale. The synergistic use of a Bi2O2‐terminated Aurivillius buffer layer and a highly anisotropic compressive epitaxial strain offers new routes to control the polar‐texture ...
Elzbieta Gradauskaite   +5 more
wiley   +1 more source

Electrical System of SDD12 Diesel Locomotive Exporting to Malaysia

open access: yes机车电传动, 2013
Main and auxiliary AC electric drive system, AC train power supply system and microcomputer control system operationprinciple and function of SDD12 diesel locomotive electrical system were expounded.
ZOU Lang-ping, MENG Yu-fa, ZHOU Shao-yun
doaj  

Expert system aided automated design of AC drive system

open access: yes, 1995
Traditionally, AC drive systems have been designed by the expert engineer using paper, pencil and calculator, and then tested through laboratory prototype. This procedure is expensive and time-consuming. Besides, the design is not necessarily optimum. An
Chhaya, Sunil Madhusudan
core  

Harmonic Comparison and Analysis on Traction and Brake Condition of AC Drive Electric Locomotive

open access: yes, 2012
Four-quadrant converter system of AC drive electric locomotive was stated, and input current harmonic distribution under traction and brake condition was analyzed, which was proved consistent by simulation and experimental ...
ZHANG Jian-bai, ZHAO Chun-ming
core   +1 more source

Modeling and Control of a 7-phase Claw-pole Starter-alternator for a Micro-hybrid Automotive Application [PDF]

open access: yes, 2008
This paper deals with the modeling and the control of a new high power 12V Integrated Starter Alternator (ISA). This system is used to bring micro-hybrid functions to standard Internal Combustion Engine (ICE) vehicles.
BOUSCAYROL, Alain   +12 more
core   +1 more source

Enhanced Terahertz Thermoelectricity Via Engineered Van Hove Singularities and Nernst Effect in Moiré Superlattices

open access: yesAdvanced Functional Materials, EarlyView.
Moiré band engineering in graphene/hexagonal boron nitride–based superlattices unlocks van Hove singularities (VHSs) for terahertz (THz) optoelectronics. Tuning the Fermi level near these singularities, associated with secondary neutrality points (SNPs), enhances the photothermoelectric response.
Leonid Elesin   +16 more
wiley   +1 more source

Design of AC Drive System for EMUs Exported to Georgia

open access: yes机车电传动, 2018
Basic parameters and performance requirements of AC drive system for EMUs exported to Georgia were illustrated. Traction/braking characteristics, main circuit, technical parameters, design concepts and technical features of the drive system were ...
HE Zhai   +3 more
doaj  

Oxygen‐Tunnel Indium Tin Oxide Vertical Channel Transistors with Enhanced Current Density and Reliability for Monolithic 3D Compute‐In‐Memory Systems

open access: yesAdvanced Functional Materials, EarlyView.
Oxygen‐tunnel (OT) indium tin oxide (ITO) vertical channel transistors (VCTs) enable reliable, high‐density gain‐cell memory for monolithic 3D integration. A sandwiched SiN/SiO2/SiN OT stack selectively regulates oxygen transport, suppressing parasitic electrode oxidation while stabilizing channel oxygen vacancies, thereby suppressing carrier injection
Hyeonho Gu   +17 more
wiley   +1 more source

Receptor‐Free Identification of Toxic Gases Enabled by Hygroscopic Aqueous Salt Films

open access: yesAdvanced Functional Materials, EarlyView.
Water as a gas sensor coating sounds impossible—until it stops evaporating. Here, hygroscopic salt solutions (LiCl, LiBr, H3PO4) form non‐drying aqueous films on CNT chemiresistors under ambient air. Gases partition into these liquid layers, sometimes transforming into water, and generate salt‐specific resistance fingerprints across a four‐channel ...
Seongwoo Lee   +5 more
wiley   +1 more source

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