Results 201 to 210 of about 13,079 (253)

Globally Optimal Control of IBR for Grid Harmonic and Unbalanced Voltage Attenuation

Yukun Qiu, Heng Nian, Haiyong Chen, Zhen He, Yaozhong Zhang, Lei Yang   +5 more
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High-temporal-resolution dataset of uni-, bidirectional, and dynamic electric vehicle charging profiles. [PDF]

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Esser M, Orfanoudakis S, Homaee O, Vahidinasab V, Vergara PP, Spina A.   +5 more
europepmc   +1 more source

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Capacitor Voltage Reduction in Modular Multilevel Converters Under Grid Voltages Unbalances

IEEE Transactions on Power Delivery, 2020
Negative- and zero-sequence internal currents of a modular multilevel converter (MMC) under unbalanced ac-grid conditions can increase the peak voltage of the submodule (SM) capacitors, which should be kept below a maximum voltage limit. This paper investigates the impact of offset pulsewidth modulation (OPWM) and zero-sequence voltage injection on ...
Jinke Li, Georgios Konstantinou, Harith R. Wickramasinghe, Christopher D. Townsend, Josep Pou   +4 more
openaire   +1 more source

DG control strategies for grid voltage unbalance compensation

2014 IEEE Energy Conversion Congress and Exposition (ECCE), 2014
With the high level penetration of power electronics interfaced Distributed Generation (DG) systems, applying these systems to compensate the grid voltage unbalance is becoming an important and interesting ancillary service for the utility. However, compensating the unbalance voltage leads to active power oscillation from the DG and may cause adverse ...
Jinghang Lu, Farzam Nejabatkhah, Yunwei Li, Bin Wu   +3 more
openaire   +1 more source

Reducing grid losses and voltage unbalance with PV inverters

2014 IEEE PES General Meeting | Conference & Exposition, 2014
In this paper, three-phase PV inverters are used to reduce the losses and the voltage unbalance in three-phase four-wire distribution grids. PV inverters rarely operate at maximal power production. If the PV inverter has four or six inverter legs it can supply negative- and zero-sequence currents. This makes it possible for the majority of the produced
S. Weckx, C. Gonzalez, J. Driesen
openaire   +1 more source

Voltage Unbalance Mitigation Using Controlled Vehicle to Grid (V2G) Strategy

2020
In 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, Anawach Sangswang, Sumate Naetiladdanon   +2 more
openaire   +1 more source

Coordinated control strategy of DFIG under grid voltage unbalance conditions

2010 5th International Conference on Critical Infrastructure (CRIS), 2010
Operation 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, null Yonghai Xu, null Zheng Chen   +2 more
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A control scheme for grid-tied hybrid modular multilevel converter under grid voltage unbalance

International Journal of Power and Energy Conversion, 2020
This 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
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Grid harmonics and voltage unbalance effect elimination for three-phase PLL grid synchronization algorithm

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, Iqbal Husain, Ali Elrayyah, Yilmaz Sozer   +3 more
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