Results 61 to 70 of about 1,034,905 (229)

Test of the He-McKellar-Wilkens topological phase by atom interferometry. Part I: theoretical discussion [PDF]

open access: yes, 2013
We have recently tested the topological phase predicted by He and McKellar and by Wilkens: this phase appears when an electric dipole propagates in a transverse magnetic field.
Büchner, Matthias   +3 more
core   +2 more sources

Current Control for Dual Three-Phase Permanent Magnet Synchronous Motors Accounting for Current Unbalance and Harmonics

open access: yesIEEE Journal of Emerging and Selected Topics in Power Electronics, 2014
This paper proposes an improved vector space decomposition current control scheme for dual three-phase permanent magnet (PM) synchronous motors having two sets of three-phase windings spatially shifted by 30° electrical degrees.
Yashan Hu, Z. Zhu, Kan Liu
semanticscholar   +1 more source

Balancing distribution systems with three‐phase active front end rectifiers: field experiment results

open access: yesIET Generation, Transmission & Distribution, 2017
This study describes field tests of alternative methods to control three‐phase active rectifiers to reduce voltage unbalance in low‐voltage (LV) distribution systems.
Phillip J. Douglass, Ionut Trintis
doaj   +1 more source

An application of decision trees method for fault diagnosis of induction motors [PDF]

open access: yes, 2006
Decision tree is one of the most effective and widely used methods for building classification model. Researchers from various disciplines such as statistics, machine learning, pattern recognition, and data mining have considered the decision tree ...
Oh, Myung-Suck   +2 more
core  

Analysis of Unbalance Harmonic Propagation in a Three-phase Power System

open access: yesTELKOMNIKA Indonesian Journal of Electrical Engineering, 2015
Operation is non-linear in a state of unbalance can cause problems harmonics in the power system. There are two parts over the use of computational time in harmonic load flow, the first in the construction of harmonic admittance matrix and the second is the iteration scheme for solving systems of linear equations.
Syukri Yunus, Khalid Mohamed Nor
openaire   +1 more source

A novel three-phase four-leg inverter based load unbalance compensator for stand-alone microgrid

open access: yes, 2015
This paper proposes a three-phase four-leg voltage sourced inverter (VSI) based load unbalance compensator (LUC) including its control algorithm, which is a component of a microgrid.
Gyeong-Hun Kim   +4 more
semanticscholar   +1 more source

The Performance of a Three-Phase Induction Motor under and over Unbalance Voltage

open access: yesTikrit Journal of Engineering Sciences, 2022
Voltage unbalance is an adverse global phenomenon impacting three-phase induction motor output. Three-phase source voltage may become imbalanced in a variety of respects, while a balanced system preserves stable voltage magnitude and angles in three ...
Abdulsatar H. Jassim   +2 more
doaj  

Investigation of Motor Supply Signature Analysis to Detect Motor Resistance Imbalances [PDF]

open access: yes, 2015
The trend to use inverter drives in industry is well established. It is desirable to monitor the condition of the motor/drive combination with the minimum of system intervention and at the same time retaining compatibility with the latest generation of ...
Ashari, Djoni   +3 more
core  

A multi‐power quality problems management strategy based on VSCs and switches in AC/DC hybrid LVDN with large PVs

open access: yesIET Renewable Power Generation
A large scale of distributed photovoltaics is accessed through a low voltage distribution network in a single‐phase or two‐phase, which causes three‐phase unbalance and over‐voltage problems.
Yu Fu   +5 more
doaj   +1 more source

Guidelines for Weighting Factors Adjustment in Finite State Model Predictive Control of Power Converters and Drives [PDF]

open access: yes, 2009
INTERNATIONAL CONFERENCE ON INDUSTRIAL TECHNOLOGY () (.2009.VICTORIA, AUSTRALIA)Model Predictive Control with a finite control set has emerged as a promising control tool for power converters and drives.
Cortés, Patricio   +7 more
core  

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