Results 51 to 60 of about 875 (164)

Improving the performance of grid‐connected inverters during asymmetrical faults and unbalanced grid voltages

IET Generation, Transmission & Distribution
The increasing penetration of the distributed energy resources (DER) in the power grid, which, while having significant advantages, also pose significant challenges.
Sepideh Shabani, Mehdi Gholipour, Mehdi Niroomand   +2 more
doaj   +1 more source

Weighting function integrated in grid-interfacing converters for unbalanced voltage correction

RE&PQJ
In  this  paper  a  weighting  function  for  voltage  unbalance  correction  is  proposed  to  be  integrated  into  the  control  of  distributed  grid-interfacing  systems.  The  correction  action  can  help  decrease  the  negative-sequence  voltage  at  the  point   of   connection   with   the   grid.
Wang, F., Duarte, J.L., Hendrix, M.A.M.
openaire   +2 more sources

Active and reactive power control during unbalanced grid voltage in PV systems

IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society, 2016
This paper presents a control strategy for a grid connected photovoltaic (PV) system aiming to regulate the active and reactive power injected to the electric system during asymmetrical voltage faults. The active power reference is obtained from a Maximum Power Point Tracking (MPPT) algorithm.
Gustavo Hunter, Iván Andrade, Javier Riedemann, Ramón Blasco Giménez, Rubén Peña   +4 more
openaire   +3 more sources

New Synchronization Method For Three-phase Three-wire Pwm Converters Under Unbalanced And Distorted Grid Voltages

Eletrônica de Potência, 2006
This paper proposes a new open-loop synchronization method for three-phase three-wire PWM converters connected to the utility grid. It presents a good performance under unbalanced and highly distorted grid voltages.
Robinson F. de Camargo, Humberto Pinheiro   +1 more
doaj   +1 more source

Control of Three-phase Four-leg Micro-grid Inverter in Islanding Mode

Kongzhi Yu Xinxi Jishu, 2013
Off-grid operation is one of the significant characteristics of micro-grid. In off-grid mode, unbalanced loads will cause voltage unbalance and degrade the performance of micro-grid.
TAN Lanlan
doaj  

Modeling and Control of AC Microgrids Under Unbalanced Utility Grid Voltage Using the Invariant-Ellipsoid Method

IEEE Access
The increasing penetration of renewable microgrids (MGs) into utility grids (UGs) has introduced new stability and power quality challenges, especially under the unbalanced voltage of the utility grid.
Hilmy Awad, Ehab H. E. Bayoumi, Hisham M. Soliman, Michele de Santis, Paola Verde   +4 more
doaj   +1 more source

Improved Voltage Unbalance and Harmonics Compensation Control Strategy for an Isolated Microgrid

Energies, 2018
This paper suggests an enhanced control scheme for a four-leg battery energy storage systems (BESS) under unbalanced and nonlinear load conditions operating in the isolated microgrid.
Mohammad Jafar Hadidian Moghaddam, Akhtar Kalam, Mohammad Reza Miveh, Amirreza Naderipour, Foad H. Gandoman, Ali Asghar Ghadimi, Zulkurnain Abdul-Malek   +6 more
doaj   +1 more source

Arm-Current-Limiting Control for Modular Multilevel Converters With Combined AC and DC Grid-Forming Control

IEEE Open Journal of Power Electronics
Grid faults pose a particular challenge to grid-forming (GFM) converters: The voltage-source behavior of a GFM converter requires current-limiting control to protect the semiconductors.
Malte Eggers, Tayssir Hassan, Sibylle Dieckerhoff   +2 more
doaj   +1 more source

Model Predictive Control of a Parallel Transformerless Static Synchronous Series Compensator for Power Flow Control and Circulating Current Mitigation

Energies
The paper proposes a parallel transformerless (TL) static synchronous series compensator (SSSC) for the control of power flow along the power distribution lines under balanced or unbalanced voltages. This new SSSC configuration offers the advantages of a
Wei Zuo, Xuejiao Pan, Li Zhang
doaj   +1 more source

Resilient Control Strategy for a Grid Interactive PV-UAPC System Under Non Sinusoidal Grid and Load Disturbances

IEEE Access
The widespread deployment of power electronics based nonlinear loads, coupled with the increasing prevalence of highly distorted grid voltages, presents critical power quality challenges in grid interactive distributed networks.
K. M. Sanjeeva Kumar, Satyajit Das
doaj   +1 more source