Results 61 to 70 of about 8,261,049 (301)
Ultra‐Thin Tow‐Based Discontinuous Composites—Material Overview and Aspirations
Advanced Functional Materials, EarlyView.Tow‐based discontinuous composites made from ultra‐thin tapes offer outstanding in‐plane mechanical properties. This material, inspired by Nacre, has high volume fraction of tapes exceeding 90 % and allows for quasi‐isotropic material plates less than 100 micrometer in thickness.
Ioannis Katsivalis +8 more
wiley +1 more source
Photocurrent-induced harmonics in nanostructures
NanophotonicsPhotocurrent-induced harmonics appear in gases and solids due to tunnel ionization of electrons in strong fields and subsequent acceleration. In contrast to three-step harmonic emission, no return to the parent ions is necessary.
Babushkin Ihar +5 more
doaj +1 more source
Vibration Model of ±800 kV Converter Transformers Under Varying Load Conditions
EnergiesUnderstanding the relationship between current harmonics and vibration is crucial for accurately modeling converter transformer vibrations, particularly under varying load conditions. In this study, vibrations of six converter transformers were monitored
Ning Wang, Jing Zheng, Yao Yuan
doaj +1 more source
Grid integration and a power quality assessment of a wave-energy park
IET Smart Grid, 2019 This study presents a step toward the grid connection of a wave-energy park through an electric power conversion system (EPCS) developed and installed for the wave-energy harvesting in Lysekil, Sweden.
Arvind Parwal +10 more
doaj +1 more source
Advanced Functional Materials, EarlyView.A novel nonlinear infrasound sensor concept based on a free‐standing ion conductive gel membrane is introduced. Acoustic signals are directly transduced into an electrical signal using an internal application mechanisms (gating). The nonlinearity might be used for neuromorphic in‐sensor computing. ABSTRACT Measuring low‐frequency or infrasound acoustic
Maarten Mittmann +6 more
wiley +1 more source
The use of induction motor line current harmonics in drive system applications: A survey [PDF]
, 2004 The line current spectrum of an induction motor normally contains a variety of harmonics of different magnitudes and frequencies from a variety of different sources. Signal processing techniques are used to extract the useful information contained in the
Guldemir, Hanifi, Gokbulut, Muammer
core +1 more source
DC-side Harmonic Analysis of SPWM-mode Traction Inverter
机车电传动, 2016 Based on energy conservation principle, DC input harmonics current of the SPWM-mode traction inverter was deducedwith AC-side instantaneous power calculation, and harmonics frequency spectrum of DC-side current was revealed.
GAO Daoxing
doaj
Random Asymmetric Carrier PWM Method for PMSM Vibration Reduction
IEEE Access, 2020 The underwater noise can be caused by the radial electromagnetic vibration of permanent magnet synchronous motor (PMSM) for electric propulsion. The difficulty in decreasing the underwater noise is not only the high-frequency but also low-frequency ...
Jiaqun Xu, Hongqiang Zhang
doaj +1 more source
Efficient Magnetization Switching Driven by Orbital Torque in Light 3d Transition‐Metal Nitrides
Advanced Functional Materials, EarlyView.Efficient magnetization switching is demonstrated through orbital torque generated from light 3d transition‐metal nitride. Transition‐metal nitrides are established as effective sources of orbital angular momentum for current‐induced switching, highlighting their potential for low‐power next‐generation orbitronic devices beyond conventional heavy‐metal‐
Gaurav K. Shukla +3 more
wiley +1 more source
Propagation of Harmonics of Return Traction Current in Rail lines
, 2019 An investigation of propagation of return traction current harmonics in rail lines was carried out for railway sections with d. c. and a. c. traction. A mathematic model of traction supply net was proposed.
Serdiuk K. +3 more
core +2 more sources