Results 11 to 20 of about 187,993 (287)

Power-Synchronization Control for Ultra-Weak AC Networks: Comprehensive Stability and Dynamic Performance Assessment

open access: yesIEEE Open Journal of the Industrial Electronics Society, 2021
Power-synchronization control (PSC) is a promising control strategy to improve the stability and performance of voltage-source converters (VSCs) in ultra-weak AC grids.
Jennifer F. Morris   +2 more
doaj   +1 more source

Seepage analysis based on weak finite element method

open access: yesYantu gongcheng xuebao, 2023
In the design and operation management of hydraulic structures such as dams, gates and embankments, the seepage calculation plays a very important role. The current methods for seepage analysis are mainly based on the general finite element method. It is
HE Zhaokui 1, SU Baoyu 2, SHENG Jinchang 2, LUO Yulong 2
doaj   +1 more source

Power-Synchronized Grid-Following Inverter Without a Phase-Locked Loop

open access: yesIEEE Access, 2021
This paper proposes a power-synchronized control strategy for grid-following inverters (GFLIs) to regulate their power exchange with the grid without any need for sensing/regulating the point of connection voltage.
Behrooz Bahrani
doaj   +1 more source

A new method of observing weak extended x-ray sources with RHESSI [PDF]

open access: yes, 2007
We present a new method, fan-beam modulation, for observing weak extended x-ray sources with the Reuven Ramaty High-Energy Solar Spectroscopic Imager (RHESSI).
Gordon J. Hurford   +4 more
core   +2 more sources

Control Performance Characterization and Monitoring Scheme for Power Converters in Weak Grids

open access: yesIEEE Open Journal of Power Electronics, 2023
In weak grids, control performance of power converters is negatively affected by the significantly varied grid impedance, which can easily lead to degradation of anti-harmonic performance, resonances or even system instability.
Jiachen Wang   +4 more
doaj   +1 more source

AVR adjustment of Synchronous Generators in Weak Grids under Faulty Conditions. [PDF]

open access: yes, 2013
In weak grids, an important problem with voltage stability and protections coordination of power plants exists. This problem appears because all the generation groups are connected to the same bus bar.
Blánquez Delgado, Francisco   +3 more
core   +1 more source

Differential Flatness-Based Performance Enhancement of a Vector Controlled VSC With an LCL-Filter for Weak Grids

open access: yesIEEE Access, 2021
In this paper, a novel single-loop flatness-based controller (FBC) is proposed to control the grid-side current in a shunt converter connected to a weak grid through an LCL-filter.
Hassan Abdullah Khalid   +4 more
doaj   +1 more source

Influence of Active Power Output and Control Parameters of Full-Converter Wind Farms on Sub-Synchronous Oscillation Characteristics in Weak Grids

open access: yesEnergies, 2020
Active power outputs of a wind farm connected to a weak power grid greatly affect the stability of grid-connected voltage source converter (VSC) systems.
Yafeng Hao   +5 more
doaj   +1 more source

"Weak Grids "Weak Grids and and GridGrid--Forming Converters"Forming Converters"

open access: yes, 2021
This presentation was part of the SP5 & SP6 WEBINAR on Grid solutions to realize 450 GW of offshore wind capacity by 2050.
openaire   +1 more source

Double‐stage grid‐integrated SPV system under weak distribution grid

open access: yesIET Renewable Power Generation, 2020
This study presents a three‐phase four‐wire grid‐tied solar photovoltaic (SPV) energy conversion system with a reduced ordered generalised integrator frequency locked loop (ROGI‐FLL) based control for the extraction of fundamental grid voltages. The reference grid currents are extracted by using the proposed filtered‐s least mean square (FsLMS) current
Abhishek Kumar   +3 more
openaire   +1 more source

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