Results 121 to 130 of about 810,213 (355)
Application of 24-Pulse Rectifier Circuit in High-Power Electric Drive Fracturing System
Shiyou jixie, 2020 Traditional fracturing equipment driven by diesel generators generally suffers from low efficiency, high cost, high noise and environmental pollution caused by exhaust gas.
Xia Liangzhi +3 more
doaj
Evaluation of semiconductor devices for Electric and Hybrid Vehicle (EHV) ac-drive applications, volume 1 [PDF]
The results of evaluation of power semiconductor devices for electric hybrid vehicle ac drive applications are summarized. Three types of power devices are evaluated in the effort: high power bipolar or Darlington transistors, power MOSFETs, and ...
Chen, D. Y. +3 more
core +1 more source
Nanoindentation Criteria for Combinatorial Thin Film Libraries
Advanced Engineering Materials, EarlyView.Thin‐film material libraries are compositional spreads used for screening composition‐structure‐property relationships. Nanoindentation is often used to characterize mechanical behavior across these systems, however variations in methodology are widespread.
Andre Bohn, Adie Alwen, Andrea M. Hodge
wiley +1 more source
Spin-echo dynamics of a heavy hole in a quantum dot
, 2012 We develop a theory for the spin-echo dynamics of a heavy hole in a quantum dot, accounting for both hyperfine- and electric-field-induced fluctuations.
Chesi, Stefano +2 more
core +1 more source
3D‐Printed Giant Magnetoresistive (GMR) Sensors Based on Self Compliant Springs
Advanced Engineering Materials, EarlyView.This work explores 3D‐printed GMR sensors utilizing self‐compliant spring structures and conductive PLA composites. By optimizing arm width, we achieved high piezoresistive (0.34%/mm) and magnetoresistive (0.77%/mT) sensitivities. Demonstrated through Bluetooth‐integrated pressure and magnetic position sensing, these full printed low‐cost, customizable
Josu Fernández Maestu +4 more
wiley +1 more source
Research the methods for raising energy efficiency of asynchronous electric drive [PDF]
, 2014 Мета роботи – дослідження методів підвищення енергетичної ефективності недовантаженого асинхронного електроприводу шляхом вдосконалення систем енергозберігаючого управління.
Липка, Ю.
core
Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures
Advanced Engineering Materials, EarlyView.This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley +1 more source
SUBSTANTIATION OF ELECTROMECHANICAL PARAMETERS OF THE CONVEYOR BELT FOR MINING INDUSTRY [PDF]
, 2018 Development and study of the electric drive control system for reducing the impact of disturbing factors in the electromechanical system and improving the energy ...
HOROBETS, Viacheslav
core
Advanced Engineering Materials, EarlyView.Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth +6 more
wiley +1 more source