Results 21 to 30 of about 179,335 (194)

A Simple Analytical Model of Static Eccentricity for PM Brushless Motors and Validation through FEM Analysis

open access: yesEnergies, 2020
The paper firstly summarizes a simple analytical model of the air gap flux-density distribution for isotropic permanent magnet (PM) synchronous machines, in the presence of static eccentricity.
Andrea Del Pizzo   +2 more
doaj   +1 more source

Software Sensors for Order Tracking Applied to Permanent Magnet Synchronous Generator Diagnostics: A Comparative Study

open access: yesRobotics, 2021
The paper deals with software sensors which facilitates the diagnosis of electrical machines in non-stationary operating conditions. The technique targeted is order tracking for which different techniques exist to estimate the speed and angle of rotation.
Laurent Rambault   +5 more
doaj   +1 more source

Electrical bearing failures in electric vehicles

open access: yesFriction, 2020
In modern electric equipment, especially electric vehicles, inverter control systems can lead to complex shaft voltages and bearing currents. Within an electric motor, many parts have electrical failure problems, and among which bearings are the most ...
Feng He, Guoxin Xie, Jianbin Luo
doaj   +1 more source

Analysis of the Shaft Resistance of Nondisplacement Piles in Sand [PDF]

open access: yes, 2008
The paper examines, using numerical modelling, the problem of the limit shaft resistance of non-displacement piles installed in sands. The modelling makes use of an advanced, two-surface-plasticity constitutive model.
Loukidis, D, Salgado, Rodrigo
core   +1 more source

Investigation on Centrifugal Pump Shaft: A Comparison Study of the SME and the Imported Product [PDF]

open access: yes, 2012
The implementation of the ASEAN-China Free Trade Agreement (ACFTA) forces the small and medium enterprises to have a high competition between the manufacturer from China and the ASEAN member countries.
S, Sugiyanto   +3 more
core   +1 more source

Effect of asymmetry of supply voltages on asynchronous motor operation modes

open access: yesE3S Web of Conferences, 2018
Effect of asymmetry of supply voltages on asynchronous motor operation modes was investigated using the computer-aided simulation experiments, the software complex Matlab and the package program Simulink.
Romanova Victoria, Khromov Sergey
doaj   +1 more source

Simulation Research on Exploiting Electrostatic Potential Difference Sensing for Shaft Centerline Orbit Reconstruction

open access: yesIEEE Access, 2019
To realize the non-contact measurement of the rotational shaft centerline orbit, a shaft centerline orbit reconstruction method using a specifically designed electrostatic sensor in conjunction with the neural network approximator is proposed in this ...
Kaihao Tang   +4 more
doaj   +1 more source

Nonlinear dynamics of a rotating shaft with a breathing crack [PDF]

open access: yes, 2011
In this paper, the effects of a breathing crack on the vibratory characteris- tics of a rotating shaft are investigated. A new, simple and robust model composed of two rigid bars connected with a nonlinear flexural spring is proposed.
Saber El Arem   +3 more
core   +1 more source

Electrical and Ca2+ signaling in dendritic spines of substantia nigra dopaminergic neurons

open access: yeseLife, 2016
Little is known about the density and function of dendritic spines on midbrain dopamine neurons, or the relative contribution of spine and shaft synapses to excitability.
Travis A Hage, Yujie Sun, Zayd M Khaliq
doaj   +1 more source

A 3D Reduced Common Mode Voltage PWM Algorithm for a Five-Phase Six-Leg Inverter

open access: yesMachines, 2023
Neutral point voltage control converters (NPVCC) are being considered for AC drive applications, where their additional degree of freedom can be used for different purposes, such as fault tolerance or common mode voltage (CMV) reduction.
Markel Fernandez   +5 more
doaj   +1 more source

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