Results 1 to 10 of about 93,733 (178)
Balance control of grid currents for UPQC under unbalanced loads based on matching-ratio compensation algorithm [PDF]
Journal of Modern Power Systems and Clean Energy, 2018 In three-phase four-wire systems, unbalanced loads can cause grid currents to be unbalanced, and this may cause the neutral point potential on the grid side to shift.
Xiaojun ZHAO +5 more
doaj +3 more sources
Effect of Doubly Fed Induction GeneratorTidal Current Turbines on Stability of a Distribution Grid under Unbalanced Voltage Conditions [PDF]
Energies, 2017 This paper analyses the effects of doubly fed induction generator (DFIG) tidal current turbines on a distribution grid under unbalanced voltage conditions of the grid.
Dahai Zhang +5 more
doaj +4 more sources
Flexible Control Strategy for Grid-Connected Inverter under Unbalanced Grid Faults without PLL [PDF]
IEEE Transactions on Power Electronics, 2015 Power oscillation and current quality are the important performance targets for the grid-connected inverter under unbalanced grid faults. Firstly, the inherent reason for the current harmonic and power oscillation of the inverter is discussed with a quantitative analysis. Secondly, a new control strategy is proposed to achieve the coordinate control of
Guerrero, Josep M. +5 more
core +3 more sources
VSC-HVDC control without PLL for unbalanced grid
Energy Reports, 2023 When unbalanced faults such as single-phase voltage drop occur in the power grid, VSC-HVDC will fail or become unstable due to sudden changes in amplitude, phase, frequency, etc. of the power grid voltage.
Zhenliang Chen +4 more
doaj +2 more sources
Energies, 2022 Presented in this paper is a method of bidirectional real and reactive power control of a three-phase grid-connected inverter under unbalanced grid situations. Unbalanced three-phase load and unbalanced grid impedance are illustrations of unbalanced grid
Mohammad Alathamneh +3 more
doaj +1 more source
Enhanced TVI for Grid Forming VSC under Unbalanced Faults [PDF]
Energies, 2021 With an increasing capacity of inverter-based generation and with a 100% renewable energy power system on the horizon, grid forming converters have the potential to become the prevalent control mode in the grid. Thus, the correct performance of these devices is going to be crucial for system stability and security of supply.
Markel Zubiaga +7 more
openaire +3 more sources
Energies, 2022 Proposed in this article is bidirectional real and reactive power control of a three-phase grid-connected inverter under unbalanced grid conditions using a proportional-resonance controller. Different unbalanced grid conditions have been studied, such as
Mohammad Alathamneh +3 more
doaj +1 more source
Impedance-Based Stability Analysis of Grid-Connected Inverters under the Unbalanced Grid Condition
Applied Sciences, 2023 As a common interface circuit for renewable energy integrated into the power grid, the inverter is prone to work under a three-phase unbalanced weak grid.
Jinzhu Shi, Lihui Yang, Hao Yang
doaj +1 more source
Ain Shams Engineering Journal, 2021 This paper presents improved energy management for grid-inverter of a hybrid photovoltaic (PV)/fuel cell (FC) energy system with unbalanced sensitive loads.
Mustafa İnci, Mehmet Selim Aygen
doaj +1 more source
Energy Reports, 2023 Unbalanced issues and power quality problems can be handled using shunt active power filters (APFs). Under weak grid conditions and unbalanced grid impedance, the unbalanced three-phase load leads to unbalanced grid currents and point-of-common-coupling ...
Mohammad Alathamneh +2 more
doaj +1 more source