Results 1 to 10 of about 9,922 (292)

Improved Method for Determining Voltage Unbalance Factor Using Induction Motors

open access: yesEnergies, 2022
This work shows an alternative method to determine the Voltage Unbalance Factor in a power grid by using both the mean value of the line voltages and Current Unbalance Factor in induction motors. Twenty unbalanced voltage points on three induction motors
Luis Guasch-Pesquer   +3 more
doaj   +3 more sources

Comprehensive Modeling of Induction Motor Imbalance Condition to ‎Precise Assessment of Steady State Performance Based on Complex ‎Current Unbalance Factor [PDF]

open access: yesمجله مدل سازی در مهندسی, 2021
After a comprehensive study of voltage unbalance issue, this ‎paper presents the defects of some unbalance factors and ‎concentrates on the importance of considering the angle of ‎complex voltage unbalance factor (CVUF) in order to ‎unbalanced condition ...
Saeed Maghsoodi   +3 more
doaj   +2 more sources

INVESTIGATION OF LOAD CURVE UNBALANCE FACTOR IN 0.4 KV ELECTRIC NETWORKS IN ARMENIA

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2005
The purpose of the paper is to investigate a load curve unbalance factor which is an integrated indicator of electric energy consumption character in 0.4 kV electric networks.
T. S. Gnuni
doaj   +2 more sources

Performance Analysis of the Slip Power Recovery Induction Motor Drive System Under Unbalance Supply Voltages [PDF]

open access: yesAdvances in Electrical and Electronic Engineering, 2021
This paper develops a mathematical model for analyzing the steady-state performance of the Slip Power Recovery Induction Motor Drive System (SPRIMDS) which operates under unbalance supply voltage conditions.
Hilmi Fadhil Ameen, Fadhil Toufick Aula
doaj   +2 more sources

A Decoupling Algorithm-Based Technology for Predicting and Regulating the Unbalance of Aircraft Rotor Assembly Considering Manufacturing Errors

open access: yesMachines, 2023
Rotor unbalance is the most important factor affecting the dynamic performance of aircraft engines. The existing unbalance prediction and control methods are insufficient for multi-stage rotors.
Yingjie Zhao   +5 more
doaj   +2 more sources

Detection of incipient rotor unbalance fault based on the RIME-VMD and modified-WKN [PDF]

open access: yesScientific Reports
Due to the high incidence and inconspicuous initial characteristics of rotor unbalance faults, the detection of incipient unbalance faults is becoming a very challenging problem.
Qian Wang, Shuo Hu, Xinya Wang
doaj   +2 more sources

Flow stability and distribution in horizontal serpentine tube bundles with vertical headers [PDF]

open access: yesHeliyon
Particle-based systems have immense potential for combining thermal energy storage (TES) with renewable energy sources. The so-called sandTES system, which is an active TES system, utilizes sand or other small particles as a storage material and consists
Viktoria Illyés   +4 more
doaj   +2 more sources

AI-based hybrid power quality control system for electrical railway using single phase PV-UPQC with Lyapunov optimization [PDF]

open access: yesScientific Reports
This research paper presents an advanced AI-driven hybrid power quality management system for electrical railways that addresses critical challenges in 25 kV AC traction networks through a novel integration of single-phase PV-UPQC with ANN-Lyapunov ...
D. K. Nishad   +4 more
doaj   +2 more sources

Dependancy of Three Phase Induction Motor Derating Aspects on Complex Voltage Unbalance Factor: A Calorimetric and Finite Element Simulation Study

open access: yesIEEE Access, 2021
It is well known that three-phase induction motors have to be derated in the presence of supply voltage unbalance (negative sequence) exceeding a stipulated limit of 1% based on several widely used standards.
Pathum Sudasinghe   +4 more
doaj   +1 more source

A Shared Energy Storage Optimal Operation Method Considering the Risk of Probabilistic Voltage Unbalance Factor Limit Violation

open access: yesShanghai Jiaotong Daxue xuebao, 2022
The distributed access with single-phase and uncertain generation of the renewable energy increase the risk of voltage unbalance limit violation in the distribution network.
FANG Xiaotao, YAN Zheng, WANG Han, XU Xiaoyuan, CHEN Yue
doaj   +1 more source

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