Results 41 to 50 of about 94,406 (293)

Model Predictive Direct Power Control of Grid-connected Converters Considering Unbalanced Filter Inductance and Grid Conditions

open access: yesJournal of Modern Power Systems and Clean Energy, 2021
The grid-connected converter (GCC) is widely used as the interface between various distributed generations and the utility grid. To achieve precise power control for GCC, this paper presents a model predictive direct power control (MPDPC) with ...
Weichen Yang   +5 more
doaj   +1 more source

Demonstration of sustained and useful converter responses during balanced and unbalanced faults in microgrids [PDF]

open access: yes, 2012
In large power grids where converter penetration is presently low and the network impedance is predominantly reactive, the required response from converters during faults is presently specified by phrases such as “maximum reactive output”.
Burt, Graeme   +4 more
core   +1 more source

Grid-tied converter operated under unbalanced and distorted grid voltage conditions

open access: yesBulletin of the Polish Academy of Sciences Technical Sciences, 2020
The paper presents a three-phase grid-tied converter operated under unbalanced and distorted grid voltage conditions, using a multi-oscillatory current controller to provide high quality phase currents. The aim of this study is to introduce a systematic design of the current control loop.
A. Gałecki   +4 more
openaire   +2 more sources

An Improved Three-Stages Cascading Passivity-Based Control of Grid-Connected LCL Converter in Unbalanced Weak Grid Condition

open access: yesIEEE Access, 2021
This paper proposes an improved three-stages cascading passivity-based control (PBC) for a grid -connected LCL converter in unbalanced weak grid condition.
Jianguo Li   +5 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

Power control strategies during voltage sags according to Spanish grid code [PDF]

open access: yes, 2018
In order to connect any power converters into the grid there are some grid requirements to insure the safe operation of the grid. So, the control of the converters especially during abnormal condition e.g. during voltage sags is
Bakkar, Mostafa   +4 more
core   +1 more source

Optimal Power Flow for Unbalanced Bipolar DC Distribution Grids

open access: yesIEEE Access, 2018
The emergence of distributed energy resources can lead to congestion in distribution grids. DC distribution grids are becoming more relevant as more sources and loads connected to the low voltage grid use dc. Bipolar dc distribution grids with asymmetric loading can experience partial congestion resulting in a nodal price difference between the two ...
Laurens Mackay   +5 more
openaire   +5 more sources

An improved synchronous reference frame current control strategy for a photovoltaic grid-connected inverter under unbalanced and nonlinear load conditions. [PDF]

open access: yesPLoS ONE, 2017
In recent years, renewable energy sources have been considered the most encouraging resources for grid and off-grid power generation. This paper presents an improved current control strategy for a three-phase photovoltaic grid-connected inverter (GCI ...
Amirreza Naderipour   +4 more
doaj   +1 more source

A compound control strategy of three‐phase Vienna rectifier under unbalanced grid voltage

open access: yesIET Power Electronics, 2021
When traditional finite‐set predictive power control is applied to Vienna rectifier, the input current will produce a large number of third harmonics under unbalanced power network, which will seriously affect the normal operation of Vienna rectifier ...
Xingtian Feng   +4 more
doaj   +1 more source

Adaptive Observer-Based Grid-Synchronization and Sequence Extraction Techniques for Renewable Energy Systems: A Comparative Analysis

open access: yesApplied Sciences, 2021
Various faults and disturbances often make the grid unbalanced and distorted. To make the grid-connected converters resilient to unbalanced and distorted grid, real-time estimation of grid voltage sequences are essential.
Hafiz Ahmed, Mohamed Benbouzid
doaj   +1 more source

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