Results 261 to 270 of about 12,297 (303)
Some of the next articles are maybe not open access.
Voltage Unbalance Mitigation Using Controlled Vehicle to Grid (V2G) Strategy
2020In the near future, electric vehicles (EV) will play an important role in society around the globe and affect the electrical power system. For instance, there would sometimes be a period of electric shortage in a case of high volume of electric consumption. This sample issue might be prevented by enacting a policy of charging EV during the peak time of
Trinnapop Boonseng +2 more
openaire +1 more source
Coordinated control strategy of DFIG under grid voltage unbalance conditions
2010 5th International Conference on Critical Infrastructure (CRIS), 2010Operation characteristics of doubly fed wind turbine generator system under grid voltage unbalance conditions are analyzed. In order to restrain various pulsations, a coordinated control strategy of rotor-side and grid-side converters of a doubly fed induction generator (DFIG) is presented.
null Mengwei Liu +2 more
openaire +1 more source
A control scheme for grid-tied hybrid modular multilevel converter under grid voltage unbalance
International Journal of Power and Energy Conversion, 2020This paper presents a finite-control-set predictive current control (FCS-PCC) scheme for the recently proposed hybrid modular multilevel converter (HMMC)-based grid connected system. The HMMC has several advantages over the conventional modular multilevel converter (MMC) as well as other multilevel topologies. This topology has reduced number of switch
Rashmi Ranjan Behera, Amarnath Thakur
openaire +1 more source
2013 IEEE Energy Conversion Congress and Exposition, 2013
The conventional synchronous reference frame phase locked loop (SRF-PLL) works perfectly for synchronization of utility interactive systems with grid that has no imperfections such as harmonics, unbalanced voltage or frequency fluctuation. However, the power grid suffers from these types of imperfections.
Ali Safayet +3 more
openaire +1 more source
The conventional synchronous reference frame phase locked loop (SRF-PLL) works perfectly for synchronization of utility interactive systems with grid that has no imperfections such as harmonics, unbalanced voltage or frequency fluctuation. However, the power grid suffers from these types of imperfections.
Ali Safayet +3 more
openaire +1 more source
New Control Method Including State Observer of Voltage Unbalance for Grid Voltage-Source Converters
IEEE Transactions on Industrial Electronics, 2010New observer-based disturbance-estimation and control algorithms are introduced in this paper that compensate source voltage unbalances. The algorithms are also designed to compensate the detrimental impact of delay effects caused by the digital-signal processing.
Kevin Lee +3 more
openaire +1 more source
2013 International Conference on Wireless Communications and Signal Processing, 2013
Computing the phase angle of a three-phase voltage signal in utility grid is critical for the synchronization of smart grid. Only if the phase angle is accurately estimated, the energy transfer between the distributed power generators and the utility grid can be properly controlled.
null Jiangcai Zhu +4 more
openaire +1 more source
Computing the phase angle of a three-phase voltage signal in utility grid is critical for the synchronization of smart grid. Only if the phase angle is accurately estimated, the energy transfer between the distributed power generators and the utility grid can be properly controlled.
null Jiangcai Zhu +4 more
openaire +1 more source
Optimal control of three-phase PV inverter under Grid voltage unbalance
2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe), 2019Typical three-phase PV inverter is designed to operate under balanced grid voltage conditions. At low voltage distribution grid, beyond utility power meters, grid unbalance conditions can be often found. Under grid voltage unbalance, a typical three-phase PV inverter with conventional control exhibits poor performance resulting in potential loss of ...
Zoran Miletic +4 more
openaire +1 more source
Voltage Unbalance-Cognizant Optimization of Distribution Grids
2023With the power grid getting greener and smarter by the day, a slew of new challenges arise to overcome. Distributed sources of energy like solar panels and batteries are being added to the grid right from the household level. While they are desirable for reducing our need for traditional sources of energy, the addition of these resources has been shown
openaire +1 more source
An improved control strategy of STATCOM for grid voltage unbalance compensation
TENCON 2015 - 2015 IEEE Region 10 Conference, 2015An improved dual-loop control strategy is proposed in this paper to improve the static synchronous compensator (STATCOM) operation performance under grid voltage unbalance conditions. In the proposed method, the second order harmonic resonant control blocks are added on the positive sequence control blocks to form the outer controller, and the negative
null Gong Hong +2 more
openaire +1 more source
The influence of grid-connected three-phase inverters on voltage unbalance
IEEE PES General Meeting, 2010The 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. To decrease this voltage unbalance problem three-phase four-wire inverter-connected distributed generation units may be used.
Bart Meersman +4 more
openaire +1 more source