Results 41 to 50 of about 17,191 (210)

Research on Torque Performance of Marine Hybrid Excitation Synchronous Motors Based on PSO Optimization of Magnetic Permeability Structure

open access: yesJournal of Marine Science and Engineering
The rotor magnetic shunt structure hybrid excitation synchronous motor (RMS-HESM) has been widely used in marine propulsion due to its advantages of low loss and high efficiency.
Qingliang Yang   +2 more
doaj   +1 more source

Determination of modeling parameters for a brushless DC motor that satisfies the power performance of an electric vehicle

open access: yesMeasurement + Control, 2019
The analysis and control of powertrain systems of electric vehicle, which is an important type of new energy vehicle, have been the focus of extensive research, but determining the motor modeling parameters remains a problem.
Caixia Huang   +3 more
doaj   +1 more source

A novel rotor design for a hybrid excited synchronous machine

open access: yesArchives of Electrical Engineering, 2017
The paper presents three novel rotor design concepts for a three-phase electric controlled permanent magnet synchronous machine (ECPMS-machine) with hybrid excitation.
Paplicki Piotr
doaj   +1 more source

Dynamo quenching due to shear flow [PDF]

open access: yes, 2008
We provide a theory of dynamo (α effect) and momentum transport in three-dimensional magnetohydrodynamics. For the first time, we show that the α effect is reduced by the shear even in the absence of magnetic field.
Eun-jin Kim   +5 more
core   +5 more sources

Compact Modeling of Volatile‐Switching Electrochemical Metallization Memory Cells by Means of the Electromotive Force

open access: yesAdvanced Intelligent Systems, EarlyView.
A volatile‐switching compact model of electrochemical metallization memory cells for neuromorphic architecture is developed and validated by reliable reproduction of device characterization measurements: I−V sweeps, SET kinetics, relaxation dynamics.
Rana Walied Ahmad   +4 more
wiley   +1 more source

Predictive Control Approach For Permanent Magnet Synchronous Motor Drive

open access: yesEletrônica de Potência, 2015
– This paper presents a predictive control approach for speed control of a permanent magnet synchronous motor with trapezoidal back-electromotive force drive. The prediction model was numerically identified and considers existent transport delays in the
Arthur G. Bartsch   +5 more
doaj   +1 more source

Saturable-reactor motor starter reduces line voltage fluctuations [PDF]

open access: yes, 1971
Saturable reactor starter uses back electromotive force /emf/ generated by large motors /18,650 to 596,800 watts/ to limit and control the starting ...
Currie, N. G.
core   +1 more source

Current systems of coronal loops in 3D MHD simulations

open access: yes, 2017
We study the magnetic field and current structure associated with a coronal loop. Through this we investigate to what extent the assumptions of a force-free magnetic field break down and where they might be justified.
Bingert, Sven   +3 more
core   +1 more source

Improving the torque generation in self-sensing BLDC drives by shaping the current waveform [PDF]

open access: yes, 2016
Brushless DC drives are widely used in different fields of application because of their high efficiency and power density. Torque ripple can be considered one of the drawbacks of these drives.
Darba, Araz   +2 more
core   +1 more source

Molten Salt Electrolyte for Enhanced Low‐Temperature Sodium Liquid Metal Batteries

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This study introduces the application of a low‐temperature, high‐conductivity, solvent‐free Na/KFSI molten salt electrolyte in sodium liquid metal batteries. Additionally, this electrolyte facilitates the formation of a stable and NaF‐rich cathode electrolyte interphase (CEI) on the alloy cathode, enabling stable cycling at an unprecedentedly low ...
Jingya Dong   +10 more
wiley   +1 more source

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