Results 21 to 30 of about 5,441 (256)

New Smart Sensor for Voltage Unbalance Measurements in Electrical Power Systems

Sensors, 2022
This paper deals with voltage unbalances and how they can be quantified according to the standards. Firstly, a comparison between the different unbalance voltage factors is conducted in order to remark on their divergences.
Santiago Bogarra, Jaime Saura, Alejandro Rolán   +2 more
doaj   +1 more source

Using Special Transformer Wiring to Improve the Three-phase Unbalance Rate of Railway System

Journal of Low Frequency Noise, Vibration and Active Control, 2023
Because imbalanced power will cause the loss of the propulsion motor of the railway vehicle, and the increase in temperature will shorten the service life of the electric vehicle.
Chien-Hsu Chen, Sheng-Chieh Huang
doaj   +1 more source

A Consideration of the Single-Phase Photovoltaic and Energy Storage Joint Regulation of a Three-Phase Unbalanced Control Strategy in a Power Distribution System

Energies, 2023
With a large amount of distributed power and energy storage access, the traditional three-phase unbalanced treatment of a power distribution system is mainly aimed at the three-phase unbalance of a load, which cannot effectively address the three-phase ...
Min Wang, Huilin Wang, Fanglin Zuo, Jie Zou, Yuan Chen, Zixuan Yu   +5 more
doaj   +1 more source

System Unbalance Analyses and Improvement for Rooftop Photovoltaic Generation Systems in Distribution Networks

Energies, 2020
This paper studies the system unbalance caused by rooftop Photovoltaic Generation Systems (PVGSs) in distribution networks and proposes an improved method.
Rong-Ceng Leou, Jen-Hao Teng, Yun-Fang Li, Wei-Min Lin, Yu-Hung Lin   +4 more
doaj   +1 more source

Research on a Three-Phase Energy Mutual-Aid Strategy for a Grid-Connected Inverter Based on Constructed Negative Sequence Current Control

Applied Sciences, 2023
With the increased grid-connected capacity of a single-phase distributed power supply, three-phase power unbalance is more likely to occur in a power grid.
Zhenao Sun, Dazhong Ma, Qiuye Sun
doaj   +1 more source

Analysis of unbalanced load low-voltage electrical networks operating modes [PDF]

E3S Web of Conferences, 2021
The article discusses distribution electrical networks 0.38 kV operating modes, feeding individual residential buildings. The electrical energy parameters measurement were certified RESURS-UF2M device carried out.
Naumov Igor, Podyachikh Sergey, Ivanov Dmitri, Tretyakov Alexander, Bastron Andrey   +4 more
doaj   +1 more source

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

IEEE 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, Upuli Jayatunga, Philip Commins, Jeff Moscrop, Sarath Perera   +4 more
doaj   +1 more source

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

Tikrit Journal of Engineering Sciences, 2021
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 ...
Abdulsatar H. Jassim, Arkan A. Hussein, Laith F. Abbas   +2 more
doaj   +1 more source

Effect of voltage supply unbalance on temperature distribution of three-phase induction motor [PDF]

E3S Web of Conferences
Three-phase induction motor is the most popular kind of electric motor used in industrial applications. To operate in ideal condition, a three-phase induction motor should work on balance three-phase voltage supply.
Kastawan I. Made Wiwit, Raharjo Parno, Kurnia Mutiara Zahra   +2 more
doaj   +1 more source

SiC-MOSFET three phase unbalance compensation device with interleaved parallel structure

Energy Reports, 2022
In this paper, a three-phase unbalance compensation device with two-module interleaved parallel structure is proposed, which can reduce the harmonic of output voltage and output ripple current.
Xiao Guo, Ziming Wang, Hongyi Lin, Xuanyin Pan, Guozhu Chen   +4 more
doaj   +1 more source