Results 11 to 20 of about 26,611 (260)

Improved control of virtual synchronous generator under unbalance of grid voltage

open access: yesEnergy Reports, 2023
Asymmetric faults in the power grid will lead to unbalanced grid voltage. When the traditional VSG control operates under unbalanced grid voltage, the output current will be unbalanced, resulting in output power oscillation.
Chunxue Wen   +3 more
doaj   +1 more source

State Estimation in Unbalanced Smart Grids

open access: yes2022 International Conference on Smart Energy Systems and Technologies (SEST), 2022
<p>This study presents a Distribution System State Estimation (DSSE) algorithm for unbalanced smart grids and evaluates its performance with special focus on the effect of the unavailability of measurements, which is a common problem on smart grids. The proposed DSSE algorithm is based on the Weighted Least Squares (WLS) method and the unbalanced
Stefanos Petridis   +7 more
openaire   +1 more source

Bidirectional Power Control for a Three-Phase Grid-Connected Inverter under Unbalanced Grid Conditions Using a Proportional-Resonant and a Modified Time-Domain Symmetrical Components Extraction Method

open access: yesEnergies, 2022
Discussed in this study is a bidirectional power control technique for a three-phase grid connected inverter under different unbalanced grid conditions.
Mohammad Alathamneh   +2 more
doaj   +1 more source

Deadbeat predictive power control for Vienna rectifier under unbalanced power grid condition

open access: yesEnergy Reports, 2021
Due to the low output distortion and switch voltage stress, Vienna rectifiers have been widely utilized in high-power applications such as communication power supplies, wind power systems and electric vehicle charging piles.
Yiyan Lu   +4 more
doaj   +1 more source

High performance current control of single‐phase grid‐connected converter with harmonic mitigation, power extraction and frequency adaptation capabilities

open access: yesIET Power Electronics, 2021
Grid‐connected converters in distributed generation systems are required to operate under highly distorted voltage with a wide frequency range, and to provide active/reactive power information for ancillary services and power control. This paper presents
Sakda Somkun
doaj   +1 more source

Power and Current Limiting Control of Wind Turbines Based on PMSG Under Unbalanced Grid Voltage

open access: yesIEEE Access, 2021
Unbalanced grid voltage sags are the severe challenge for wind power generation system which connected to the grid successfully. The dc bus voltage and output power will fluctuate under unbalanced grid voltage. Moreover, the voltage sags will lead to the
Jun Liu, Chencong Zhao, Zhouhua Xie
doaj   +1 more source

Grid-Following Voltage Source Converters: Basic Schemes and Current Control Techniques to Operate With Unbalanced Voltage Conditions

open access: yesIEEE Open Journal of the Industrial Electronics Society, 2021
The growing relevance of voltage source converters (VSCs), and the deep impact they have on the development and maintenance of the electrical grid, increase the necessity of further research on how to deal with nonideal grid conditions from the VSCs ...
Pablo Montero-Robina   +3 more
doaj   +1 more source

An Optimal Power Flow Algorithm for the Simulation of Energy Storage Systems in Unbalanced Three-Phase Distribution Grids

open access: yesEnergies, 2021
An optimal power flow algorithm for unbalanced three-phase distribution grids is presented in this paper as a new tool for grid planning on low voltage level. As additional equipment like electric vehicles, heat pumps or solar power systems can sometimes
Lukas Held   +5 more
doaj   +1 more source

Improvement of two grid power factor control methods for matrix converter open‐end‐winding drive with common‐mode voltage elimination supplied by unbalanced grid

open access: yesIET Power Electronics, 2023
This paper investigates space‐vector‐modulation (SVM) technique that uses only rotating space vectors to drive a direct matrix converter (DMC) with zero common‐mode voltage (CMV).
Luka Stanić   +3 more
doaj   +1 more source

Flexible Power Regulation and Limitation of Voltage Source Inverters under Unbalanced Grid Faults

open access: yesCES Transactions on Electrical Machines and Systems, 2022
This paper develops a flexible power regulation and limitation strategy of voltage source inverters (VSIs) under unbalanced grid faults. When the classical power theory is used under unbalanced grid faults, the power oscillations and current distortions ...
Peng Cheng   +4 more
doaj   +1 more source

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