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Three-Phase Unbalance Analysis Method Based on Three-Phase Motor Current Instantaneous Information
Applied Sciences, 2023 Motor current signal analysis is a common method that can be applied to the monitoring and diagnosis of electromechanical equipment. Three-phase unbalance will increase the line power loss and affect the safe operation of power-using equipment.
Xun Zhang +5 more
doaj +4 more sources
Three-phase inverter-connected DG-units and voltage unbalance [PDF]
Electric Power Systems Research, 2011 The increasing presence of single-phase distributed generators and unbalanced loads in the electric power system may lead to unbalance of the three phase voltages, resulting in increased losses and heating. The distribution network operators (DNOs) are increasingly being challenged to maintain the required power quality.
Degroote, Lieven +4 more
core +7 more sources
Three-Phase Primary Control for Unbalance Sharing between Distributed Generation Units in a Microgrid [PDF]
Energies, 2013 For islanded microgrids, droop-based control concepts have been developed both in single and three-phase variants. The three-phase controllers often assume a balanced network; hence, unbalance sharing and/or mitigation remains a challenging issue ...
Tine L. Vandoorn +3 more
doaj +4 more sources
IEEE Access, 2020 Three-phase unbalance issue can cause adverse impacts on the power quality of the solid-state transformer (SST) based AC/DC hybrid microgrid. In this paper, an unbalanced power control strategy for cascaded dual active bridge (DAB) converter is proposed.
Yuyang Li +4 more
doaj +3 more sources
Control strategy for microgrid under three-phase unbalance condition [PDF]
Journal of Modern Power Systems and Clean Energy, 2016 Microgrid (MG) is generally developed at utility terminal which contains lots of unbalanced loads and distributed generations (DGs). The interaction between MG and the unbalance loads or DGs will degrades the control performance of interfaced inverter in
Hongtao Shi +3 more
doaj +2 more sources
Point Estimate Method for Voltage Unbalance Evaluation in Residential Distribution Networks with High Penetration of Small Wind Turbines [PDF]
Energies, 2014 Voltage unbalance (VU) in residential distribution networks (RDNs) is mainly caused by load unbalance in three phases, resulting from network configuration and load-variations.
Chao Long +3 more
doaj +4 more sources
Unbalance Compensator for Three-Phase Industrial Installations.
IEEE Latin America Transactions, 2011 Este trabajo ha sido apoyado por el Centro de Transferencia de Tecnología de la UPV y por Eléctrica de Vinalesa, S. Coop. V., a través del proyecto INNOVA 2008, nº 1830.
León-Martínez, Vicente +2 more
openaire +4 more sources
Energies, 2019 In the low-voltage (LV) distribution network, a three-phase unbalance problem often exists. It does not only increase line loss but also threaten the safety of the distribution network. Therefore, the author designs a residential load transfer device for
Guanghai Bao, Sikai Ke
doaj +3 more sources
Multi-Physics Numerical Research in Oil-Immersed Three-Phase Transformer Under Load Unbalance
EnergiesTransformers are susceptible to the influences of complex power grid systems, which may induce three-phase unbalance in transformers, thereby threatening their safety and stable operation.
Guanxun Diao +4 more
doaj +3 more sources
Energies, 2022 The aim of this study is to improve the three-phase unbalanced voltage at the secondary side of a distribution transformer. The proposed method involves compensation sources injecting three different single-phase currents into the connected point of a ...
Chien-Kuo Chang +2 more
doaj +3 more sources