Results 31 to 40 of about 563,369 (296)

Simplified modeling of electromagnets for dynamic simulation of transient effects for a synchronous electric motor

International Journal of Mechanical System Dynamics, 2021
This study aims to show an approach for the dynamic simulation of a synchronous machine. The magnetic forces in the air gap are calculated efficiently using simplified approaches without neglecting important effects.
Florian Bechler, Julius Kesten, Florian Wittemann, Frank Henning, Martin Doppelbauer, Peter Eberhard   +5 more
doaj   +1 more source

Nonlinear force-free modeling of the solar coronal magnetic field

, 2008
The coronal magnetic field is an important quantity because the magnetic field dominates the structure of the solar corona. Unfortunately direct measurements of coronal magnetic fields are usually not available.
Alissandrakis, Aly, Aly, Aly, Amari, Amari, Amari, Aschwanden, Aschwanden, Aschwanden, Bineau, Bleybel, Borrero, Bossavit, Boulmezaoud, Carcedo, Chiu, Chodura, Cuperman, Cuperman, Dedner, Demoulin, Gary, Gary, He, Henney, Inhester, Jiao, Judge, Kageyama, Keppens, Klimchuk, Kramar, Kramar, LaBonte, Lagg, Leka, Li, Lin, Liu, Low, McClymont, Metcalf, Metcalf, Metcalf, Metcalf, Mickey, Mikic, Mikic, Molodensky, Molodensky, Nakagawa, Nakagawa, Pevtsov, Press, Priest, Priest, Priest, Priest, Roumeliotis, Régnier, Régnier, Régnier, Régnier, Sakurai, Sakurai, Sakurai, Sakurai, Schatten, Schmidt, Schrijver, Schrijver, Schrijver, Schrijver, Seehafer, Seehafer, Semel, Semel, Shimizu, Solanki, Song, T. Wiegelmann, Titov, Török, Valori, van Ballegooijen, van Ballegooijen, Wang, Wheatland, Wheatland, Wheatland, Wheatland, Wiegelmann, Wiegelmann, Wiegelmann, Wiegelmann, Wiegelmann, Wiegelmann, Wiegelmann, Wiegelmann, Wiegelmann, Wiegelmann, Wu, Wu, Wu, Yan, Yan, Yan, Yan, Yang, Yee   +110 more
core   +1 more source

Interference between electric and magnetic concepts in introductory physics

Physical Review Special Topics. Physics Education Research, 2011
We investigate student confusion of concepts of electric and magnetic force. At various times during a traditional university-level course, we administered a series of simple questions about the direction of force on a charged particle moving through ...
Thomas M. Scaife, Andrew F. Heckler
doaj   +2 more sources

Simulation and Characterization of a Nonlinear Dual-Frequency Piezoelectric Energy Harvester

Proceedings, 2018
In this paper, we present a concept, simulation and characterization results of a dual-frequency piezoelectric energy harvester with magnetic frequency tuning capabilities.
Sofiane Bouhedma, Yuhang Zheng, Dennis Hohlfeld   +2 more
doaj   +1 more source

Principle and performance analysis for six‐pole hybrid magnetic bearing with a secondary air gap

Electronics Letters, 2021
In order to reduce the non‐linearity of radial suspension forces of the three‐pole hybrid magnetic bearing and further reduce the cost and power consumption, an AC six‐pole hybrid magnetic bearing with secondary air gaps is proposed. First, the structure
Gai Liu, Huangqiu Zhu, Weiyu Zhang
doaj   +1 more source

Magnetically active lithium-ion batteries towards battery performance improvement

iScience, 2021
Summary: Lithium-ion batteries (LIBs) are currently the fastest growing segment of the global battery market, and the preferred electrochemical energy storage system for portable applications.
Carlos M. Costa, Karla J. Merazzo, Renato Gonçalves, Charles Amos, Senentxu Lanceros-Méndez   +4 more
doaj   +1 more source

AAA+ protein unfoldases—the Moirai of the proteome

FEBS Letters, EarlyView.
AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley   +1 more source

Phenotypic and genotypic characterization of single circulating tumor cells in the follow‐up of high‐grade serous ovarian cancer

Molecular Oncology, EarlyView.
Single circulating tumor cells (sCTCs) from high‐grade serous ovarian cancer patients were enriched, imaged, and genomically profiled using WGA and NGS at different time points during treatment. sCTCs revealed enrichment of alterations in Chromosomes 2, 7, and 12 as well as persistent or emerging oncogenic CNAs, supporting sCTC identity.
Carolin Salmon, Rui P. L. Neves, Nikolas H. Stoecklein, Sven‐Thorsten Liffers, Jens Siveke, Jan D. Kuhlmann, Pauline Wimberger, Paul Buderath, Rainer Kimmig, Sabine Kasimir‐Bauer   +9 more
wiley   +1 more source

Non-Levitative Electromagnet Robot Propulsion Method for 2-D Material Handling

IEEE Access
Smart factories are increasingly adopting two-dimensional (2D) motionsystems due to their flexible layouts and support for independently routedtransport. However, current technologies face major scaling challenges. Autonomous mobile robots (AMRs) require
Shangqiu Li
doaj   +1 more source

Harmonics in the Squirrel Cage Induction Motor, Analytic Calculation Part II: Synchronous Parasitic Torques, Radial Magnetic Forces

CES Transactions on Electrical Machines and Systems, 2023
The magnetic field generated in the air gap of the cage asynchronous machine and the harmonics of the magnetomotive forces creating that magnetic field, as well as the synchronous parasitic torques, radial magnetic forces have been discussed in great ...
G. Kovács
doaj   +1 more source