Results 31 to 40 of about 336,016 (296)

A Control Method for Three-phase Inverters with Unbalanced and Nonlinear Loads

open access: yesZhejiang dianli, 2022
Focusing on three-phase inverter control with unbalanced and nonlinear loads in islanded microgrids, an inverter control method including fundamental voltage tracking, harmonic voltage suppression, active damping and output current limiting is proposed ...
XIA Xiang   +5 more
doaj   +1 more source

Critical Evaluation Of Fbd, Pq And Cpt Current Decompositions For Four-wire Circuits

open access: yesEletrônica de Potência, 2009
This paper investigates the major similarities and discrepancies of three important current decompositions proposed for the interpretation of unbalanced and/or non linear three-phase four-wire circuits.
Fernando P. Marafão   +2 more
doaj   +1 more source

A multifunctional dynamic voltage restorer for power quality improvement [PDF]

open access: yes, 2018
Power quality is a major concern in electrical power systems. The power quality disturbances such as sags, swells, harmonic distortion and other interruptions have an impact on the electrical devices and machines and in severe cases can cause serious ...
Dung, Vo Tien   +2 more
core   +1 more source

Contribution Determination for Multiple Unbalanced Sources at the Point of Common Coupling

open access: yesEnergies, 2017
Three-phase unbalance is an important power quality issue that can cause many negative effects to the power system. Effective mitigation and management of voltage unbalance will benefit from the knowledge of how the unbalanced sources contribute to the ...
Yuanyuan Sun   +3 more
doaj   +1 more source

Minimum Loss Discontinuous Pulse-Width Modulation Per Phase Method for Three-Phase Four-Leg Inverter

open access: yesIEEE Access, 2020
The three-phase four-leg inverter (TPFLI) provides unbalanced voltage to a load or injects unbalanced current to a grid to compensate unbalanced current. However, it has a high switching loss because of the fourth leg. This paper presents a discontinuous
Soo Yeon Kim   +2 more
doaj   +1 more source

Advanced Control of the dynamic voltage restorer for mitigating voltage sags in power systems [PDF]

open access: yes, 2018
The paper presents a vector control with two cascaded loops to improve the properties of Dynamic Voltage Restorer (DVR) to minimize Voltage Sags on the grid.
Dung, Vo Tien   +4 more
core   +1 more source

Tradeoffs between AC power quality and DC bus ripple for 3-phase 3-wire inverter-connected devices within microgrids [PDF]

open access: yes, 2011
Visions of future power systems contain high penetrations of inverters which are used to convert power from dc (direct current) to ac (alternating current) or vice versa.
Burt, Graeme M.   +2 more
core   +1 more source

Model Predictive Current Control for Fault-Tolerant Bidirectional Voltage Source Converter With Open Circuit Fault and Unbalanced Grid Voltage

open access: yesIEEE Access, 2020
To improve the fault-tolerant operation capability of bidirectional voltage source converter (BVSC), an improved model predictive current control (IMPCC) for fault-tolerant BVSC, is proposed with balanced DC-link capacitor voltage under unbalanced grid ...
Shiyang Hu   +3 more
doaj   +1 more source

ExaGridPF: A Parallel Power Flow Solver for Transmission and Unbalanced Distribution Systems

open access: yes, 2017
This paper investigates parallelization strategies for solving power flow problems in both transmission and unbalanced, three-phase distribution systems by developing a scalable power flow solver, ExaGridPF, which is compatible with existing high ...
Bachan, John, Chan, Cy, Wang, Bin
core   +1 more source

Short circuit study of fixed speed wind turbines with STATCOM in distribution networks [PDF]

open access: yes, 2015
The increased penetration of wind farm in distribution networks has brought changes in the performance of the whole system. Such disadvantages when connecting one of these distributed generation sources is reduced voltage and power stability of the AC ...
Darwish, M, Naain, MM, Zobaa, AF
core   +1 more source

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