Results 11 to 20 of about 14,572 (263)

Congestion Management Method of Low-Voltage Active Distribution Networks Based on Distribution Locational Marginal Price

open access: yesIEEE Access, 2019
Large-scale distributed energy resources, such as electric vehicles (EVs) asymmetric access to low-voltage distribution systems, may cause security problems, including line congestion, voltage violation, and three-phase unbalance.
Jinli Zhao   +5 more
doaj   +1 more source

Unbalance Response Analysis of a Rotor Kit with Two Identical Discs Located Between Bearings

open access: yesTehnički Glasnik, 2023
In this paper, the dynamic behavior of a rotor kit with two identical disks located between the plain bearings was analyzed. Modal and harmonic analysis of this rotor kit configuration were performed in the Ansys software package.
Marko Katinić   +3 more
doaj   +1 more source

Turbine Rotor Dynamics Models Considering Foundation and Stator Effects

open access: yesMachines, 2022
The paper deals with the modelling of turbine rotors, including a foundation and stator parts, and with their dynamic analysis. The dynamics of turbines can be strongly influenced by the effects of a rotor foundation, and therefore suitable modelling ...
Michal Hajžman   +3 more
doaj   +1 more source

An Angular Speed and Position FLL-Based Estimator Using Linear Hall-Effect Sensors

open access: yesIEEE Access, 2021
This paper proposes using a frequency-locked loop-based detector to estimate rotational speed and angle position for an electric machine rotor shaft. The measurement system consists of arrays of permanent magnets fixed to the rotor shaft together with ...
Luis Ibarra   +3 more
doaj   +1 more source

Analysis on Unbalance Protection of SCB [PDF]

open access: yesApplied Mechanics and Materials, 2013
Shunt capacitor is a main measure to reactive power compensation of power system, which has the advantages of flexibility and economy. In order to guarantee the safety of shunt capacitor, the methods for protecting against over-voltage, under-voltage, over-current and unbalance in circuits according to the different operation modes are used. This paper
Qiang Fu, Jing-jie Hu, Xiao-ping Xiong
openaire   +1 more source

Analysis of Progressively Unbalanced Induction Motor Current Signals Based on Information Entropy

open access: yesElektronika ir Elektrotechnika, 2018
The article presents the capabilities of a new fault identification method used for different fault levels. The method allows identifying unbalanced induction motor by only using stator current signals.
Ignas Andrijauskas, Rimas Adaskevicius
doaj   +1 more source

Power Quality Phenomena in Electric Railway Power Supply Systems: An Exhaustive Framework and Classification

open access: yesEnergies, 2020
Electric railway power systems (ERPS) as one of the most critical and high-power end-user loads of utility grids are characterized by outlandish power quality (PQ) problems all over the world.
Hamed Jafari Kaleybar   +4 more
doaj   +1 more source

Rotordynamic and Friction Loss Measurements on a High Speed Laval Rotor Supported by Floating Ring Bearings

open access: yesLubricants, 2017
Floating ring bearings are the commonly used type of bearing for automotive turbochargers. The automotive industry continuously investigates how to reduce the bearing friction losses and how to create silent turbochargers.
Rob Eling   +3 more
doaj   +1 more source

Functional assessment of patients with vertigo and dizziness in occupational medicine

open access: yesMedycyna Pracy, 2018
Background Balance assessment relies on symptoms, clinical examination and functional assessment and their verification in objective tests. Our study was aimed at calculating the assessment compatibility between questionnaires, functional scales and ...
Ewa Zamysłowska-Szmytke   +2 more
doaj   +1 more source

Experimental implementation of algebraic identifier for unbalance parameters in a rotor-bearing system

open access: yesFrontiers in Mechanical Engineering
This article presents experimental results on the algebraic identification of the magnitude and phase angle of unbalance in a rotor-bearing system in a Jeffcott configuration.
Jesús U. Quiroz-Bautista   +3 more
doaj   +1 more source

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