Results 31 to 40 of about 23,931 (308)

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

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

Voltage Unbalance Compensation in Distribution Feeders Using Soft Open Points

Journal of Modern Power Systems and Clean Energy, 2022
Soft open points (SOPs) are power electronic devices that may replace conventional normally-open points in distribution networks. They can be used for active power flow control, reactive power compensation, fault isolation, and service restoration ...
Rui You, Xiaonan Lu
doaj   +1 more source

Control of DFIG based wind generation systems under unbalanced network supply [PDF]

, 2007
This paper develops a dynamic model and control scheme for DFIG systems to improve the performance and stability under unbalanced grid conditions. A dynamic DFIG model containing the positive and negative sequence components is presented using stator ...
Wang, Yi, Xu, L.
core   +1 more source

Optimal Individual Phase Voltage Regulation Strategies in Active Distribution Networks with High PV Penetration Using the Sparrow Search Algorithm

Energies, 2021
This study aimed to propose individual phase voltage regulation strategies using the sparrow search algorithm (SSA) in the IEEE 8500-node large-scale unbalanced distribution network with high photovoltaic (PV) penetration.
Yih-Der Lee, Wei-Chen Lin, Jheng-Lun Jiang, Jia-Hao Cai, Wei-Tzer Huang, Kai-Chao Yao   +5 more
doaj   +1 more source

Monte Carlo-Based Comprehensive Assessment of PV Hosting Capacity and Energy Storage Impact in Realistic Finnish Low-Voltage Networks

Energies, 2018
The direction taken towards sustainable power system and renewable energy generation is now irreversible. The power grid needs to host more renewable energy sources, such as solar power, and tackle power quality problems that come along with it.
Ammar Arshad, Verner Püvi, Matti Lehtonen   +2 more
doaj   +1 more source

Detection and assessment scheme of voltage and current unbalance for three phase synchronous generators using dual numerical techniques based on correlation and deviation percentage concepts

The Journal of Engineering, 2021
A differentiation in three‐phase voltages or currents is termed as unbalance. Unbalance can be caused by unbalanced loads and power system faults. This disturbance results in serious problems in system elements, particularly to synchronous generators ...
Ragab Abd Allah Mahmoud
doaj   +1 more source

Integrated Volt/Var Control Method for Voltage Regulation and Voltage Unbalance Reduction in Active Distribution Networks

Energies, 2022
The emergence of distributed generation such as solar systems has introduced new challenges in distribution networks that are becoming more apparent with increasing penetration levels.
Izzah Afandi, Ashish P. Agalgaonkar, Sarath Perera   +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

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

FEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source