Results 71 to 80 of about 10,515 (289)
Power factor correction of an electrical drive system based on multiphase machines [PDF]
2014 First International Conference on Green Energy ICGE 2014, 2014 This paper deals with the energy efficiency improvement of an electrical drive which can be used both in wind energy conversion or motor drive applications. A power factor (PF) control scheme is presented allowing energy efficiency enhancement and optimization in high power variable-speed drives based on multiphase machines.
Khoudir Marouani +3 more
openaire +1 more source
Advanced Functional Materials, EarlyView.Flexible piezoresistive pressure sensors underpin wearable and soft electronics. This review links sensing physics, including contact resistance modulation, quantum tunneling and percolation, to unified materials/structure design. We highlight composite and graded architectures, interfacial/porous engineering, and microstructured 3D conductive networks
Feng Luo +2 more
wiley +1 more source
Advanced Functional Materials, EarlyView.A fluorine‐rich acrylate monomer (PFHEA) was solvent‐free applied to NCM90 and thermally decomposed under Ar to convert residual lithium into LiF and form a pre‐built LiF/fluorinated amorphous carbon (LiF/FC) interphase. The LiF/FC layer suppresses NiO rock‐salt reconstruction and microcrack propagation, lowers interfacial resistance, and improves Li ...
Pangyu Kim +6 more
wiley +1 more source
FPGA Based Five-Phase Sinusoidal PWM Generator [PDF]
, 2012 Multiphase machine has became popular in many rotational drive applications due to its reliability, high efficiency and high quality of waveforms. Moreover, this machine (e.g.
Alsofyani, I.M. +4 more
core +1 more source
Advanced Materials, EarlyView.This review systematically summarizes recent advances in porosity engineering of MXenes, with a focused discussion on their structure‐governed energy storage properties. A critical analysis of structure–property relationships is presented across alkali‐ion batteries, multivalent‐ion batteries, and supercapacitors.
Shude Liu +8 more
wiley +1 more source
Should {\Delta}{\Sigma} Modulators Used in AC Motor Drives be Adapted to the Mechanical Load of the Motor? [PDF]
, 2012 We consider the use of {\Delta}{\Sigma} modulators in ac motor drives, focusing on the many additional degrees of freedom that this option offers over Pulse Width Modulation (PWM). Following some recent results, we show that it is possible to fully adapt
Bizzarri, Federico, Callegari, Sergio
core +1 more source
Reactive Laser Additive Manufacturing of Hierarchically Structured Aerogels
Advanced Materials, EarlyView.Reactive laser additive manufacturing transforms printing into a chemically active synthesis step. Salt‐enabled transient reaction environments drive in situ formation of hierarchically structured graphitic aerogels with microtubular and nanoscale features in seconds.
Shuichiro Hayashi +6 more
wiley +1 more source
Advanced Robotics Research, EarlyView.To address challenges in high‐throughput intestinal sampling with sealed containment and target drug delivery, we developed a dual‐functional ingestible passive capsule with a dual‐triggered control system based on pH‐response and mechanical actuation.
Libing Huang +9 more
wiley +1 more source
Application of powerful multiphase electric machines in marine rowing electric installations
Омский научный вестникThe advantages of electric propulsion systems contribute to their use on ships and ships of the navy — icebreakers, ferries, tugboats, cruisers, etc., which require increased maneuverability and survivability.
V. V. Mikhanoshin +2 more
doaj +1 more source
Performance evaluation of a transformerless multiphase electric submersible pump system
The Journal of Engineering, 2014 Using of low-voltage variable-frequency drive followed by a step-up transformer is the most preferable way to feed an electrical submersible pump motor. The existence of long feeder between the motor and drive systems usually causes over-voltage problems
Ahmed A. Hakeem +5 more
doaj +1 more source