Results 161 to 170 of about 17,692 (200)

Interface Passivation for Dc Converters Under Voltage Droop Control

2018 37th Chinese Control Conference (CCC), 2018
Voltage droop control is one of the most commonly used control strategies for DC microgrids in islanded mode. Operation patterns and time-varying structure of DC microgrids affect the effectiveness of voltage droop control. In this paper, interface passivation is studied according to the fact that the stability of DC microgrids is ensured as long as ...
Hongqiao Deng, Ji Xiang
openaire   +1 more source

Frequency and Voltage Restoration for Droop Controlled AC Microgrids

2019 2nd International Conference on Smart Grid and Renewable Energy (SGRE), 2019
Voltage source inverters in islanded microgrids grant active and reactive power sharing. Droop control is widely used due to its simplicity and lack of need for communication. Loads in droop-based microgrids drive the system frequency and voltage up and down.
Anas Karaki, Miroslav Begovic, Sertac Bayhan, Haitham Abu-Rub   +3 more
openaire   +1 more source

Decentralized voltage support in a Low Voltage feeder by droop based voltage controlled PVs

2013 Australasian Universities Power Engineering Conference (AUPEC), 2013
Voltage drop at network peak hours is a significant power quality problem in Low Voltage (LV) distribution feeders. Recently, voltage rise due to high penetration of Photovoltaic cells (PVs) has been creating a new power quality problem during noon periods.
Shahnia, Farhad, Ghosh, Arindam
openaire   +2 more sources

Voltage and Frequency Droop Control in an Autonomous Microgrid

Applied Mechanics and Materials, 2012
In this paper, a method for the parallel operation of inverters in an autonomous microgrid system is adopted. This paper presents the resistive output impedance control scheme that allows multiple voltage source converters (VSCs) to operate in parallel in a VSC fed microgrid. The control loops are taking into account the special nature of a low-voltage
Xiao Ying, Heng Wei Lin, Zhao Yang Yan, Jian Xia Li, Ming Su   +4 more
openaire   +1 more source

Hierarchical Voltage Control of a Wind Farm Based on Droop Control

2020 5th Asia Conference on Power and Electrical Engineering (ACPEE), 2020
The increasing penetration level of wind power has brought a number of reactive/voltage control problems to power systems. In order to improve the voltage control effect, the wind power will be cut down in some extreme cases. To maximize the utilization of wind power, this paper proposes a hierarchical voltage control strategy based on droop control ...
Shan Li, Ning Zhou, Luhua Xing, Zhixuan Zhang, Zhe Zhang, Qiao Fang   +5 more
openaire   +1 more source

A voltage and frequency droop control method for microsources

2011 International Conference on Electrical Machines and Systems, 2011
This paper focuses on a control method for microsources which can work as AC voltage sources, instead of AC current sources. The microsources can not only provide AC power in grid-connected mode, but also control the frequency and voltage for the microgrid load in island mode.
Xing Huang, Xinmin Jin, Tianyi Ma, Yibin Tong   +3 more
openaire   +1 more source

Voltage Support Provided by a Droop-Controlled Multifunctional Inverter

IEEE Transactions on Industrial Electronics, 2009
This paper presents a single-phase multifunctional inverter for photovoltaic (PV) systems application. The converter provides active power to local loads and injects reactive power into the grid providing voltage support at fundamental frequency. The proposed topology is controlled by means of the droop-control technique. Hence, it allows the obtaining
Vasquez J. C., MASTROMAURO, ROSA ANNA, Guerrero J. M, Liserre M.   +3 more
openaire   +1 more source

Ultimate Boundedness of Voltage Droop Control With Distributed Secondary Control Loops

IEEE Transactions on Smart Grid, 2019
Conditions are derived for ultimate boundedness of voltage stabilization and reactive power balancing in electrical microgrids with voltage (E-Q) droop control and distributed secondary control loops. This paper shows that under a bound on the load reactive power demand, an ultimate bound set and its associated region of attraction can be computed for ...
Monica E. Romero, Maria M. Seron
openaire   +1 more source

Communication-based secondary control in microgrids with voltage-based droop control

PES T&D 2012, 2012
Smart microgrids are becoming an important concept to cope with the increasing demand of electricity and to integrate the large amounts of intermittent power sources in the electrical network. Microgrids are able to operate in grid-connected and islanded mode and present themselves to the utility network as controllable entities.
Tine L. Vandoorn, Jeroen D.M. De Kooning, Bart Meersman, Lieven Vandevelde   +3 more
openaire   +1 more source

Droop Controller Limitation for Voltage Stability in Islanded Microgrid

RE&PQJ
The motivation to develop microgrids (MG), as a particular form of active networks is explained and presented as an effective solution for the control of grids. In MGs, with high level of penetration of Distributed Energy Resources, the stability becomes an important issue.
null M. Kohansal, null G. B. Gharehpetian, null M. Abedi, null M. J. Sanjari   +3 more
openaire   +1 more source