Results 21 to 30 of about 306,024 (298)

Operation of STATCOM connected to a weak grid [PDF]

, 2019
The purpose of this thesis was to investigate the operational possibility of MMC STATCOM in weak grid conditions. Weak grid is a power system which has low short circuit capacity, high equivalent grid impedance, high dV/dQ sensitivity and higher volatility to voltage instability.
Chalabov, Roman
openaire   +2 more sources

A Study of a single phase grid connected PV inverter performance under a weak grid conditions and distorted grid voltage for Cambodia

, 2021
A single-phase grid-connected PV inverter performance under a weak grid is a model designed to penetrate PV energy with a weak grid. Usually, this model gets complex and unstable in power system control such as THD growth, harmonic effects, voltage ...
Sakda Somkun, Somkun, Sakda, Phoeurn, Sovanna, Sovanna Phoeurn   +3 more
core   +1 more source

Weak-grid tolerant positive- and negative-sequence current control of voltage-source converters

, 2021
This paper deals with positive- and negative-sequence current control of voltage-source converters. An enhanced weak-grid tolerant state-feedback controller design based on direct pole placement approach is proposed.
Jarno Kukkola, Kukkola, Jarno, Ville Pirsto, Pirsto, Ville, Marko Hinkkanen, Hinkkanen, Marko, Rahman, F M Mahafugur, F. M. Mahafugur Rahman   +7 more
core   +1 more source

Control Loops Passivation Design of Weak-Grid-Tied Grid-Following Inverters for Maximum Power Transfer Capability Improvement

, 2023
The theoretical maximum power transfer capability of the phase-locked loop (PLL)-based grid-following inverters can be limited under weak-grid conditions due to the non passivity of control loops.
Weihua Zhou (16896600), Behrooz Bahrani (11400987), Nabil Mohammed (13129188)   +2 more
core   +1 more source

A voltage-sensorless controller for grid converters

, 2021
Grid converters need information about the point-of-common-coupling voltage for their control. The voltage is typically measured for current and ac-bus voltage control, and for synchronization. In order to increase reliability by decreasing dependence on
Jarno Kukkola, Mikko Routimo, Harnefors, Lennart, Kukkola, Jarno, Routimo, Mikko, Marko Hinkkanen, Hinkkanen, Marko, Lennart Harnefors   +7 more
core   +1 more source

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

IEEE 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, Carlo Cecati, Nasser Ahmed Al-Emadi, Adel Gastli, Lazhar Ben-Brahim   +4 more
doaj   +1 more source

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

, 2021
This presentation was part of the SP5 & SP6 WEBINAR on Grid solutions to realize 450 GW of offshore wind capacity by 2050.
openaire   +2 more sources

Comparison of PLL-Based and PLL-Less Control Strategies for Grid-Following Inverters Considering Time and Frequency Domain Analysis

IEEE Access, 2022
This article presents a comprehensive comparison of three control strategies used for grid-following inverters (GFLIs). The first strategy is the phase-locked loop (PLL)-based vector current control (VCC), and the other two PLL-less controllers are the ...
Nabil Mohammed, Weihua Zhou, Behrooz Bahrani   +2 more
doaj   +1 more source

Control Scheme and Performance Analysis of Dual-Frequency Single-Phase Grid-Connected Inverter Interfaced With Weak and Distorted Grids

IEEE Access, 2020
Grid impedance variation and voltage harmonics may cause instability of the grid-connected inverter system and reduce the grid current quality under weak grid.
Liyong Yang, Xiaojuan He, Peng Zhang, Shuo Liu   +3 more
doaj   +1 more source

Transient characteristics and adaptive fault ride through control strategy of DFIGs considering voltage phase angle jump

Journal of Modern Power Systems and Clean Energy, 2017
Wind power in China has experienced fast development in recent years. However, areas rich in wind power resources are often far away from loads centers, which leads to weak connection between wind turbines and power grid.
Xinshou Tian, Yongning Chi, Weisheng Wang, Gengyin Li, Haiyan Tang, Zhen Wang   +5 more
doaj   +1 more source