Exploració per tema "Voltage sag"
Ara es mostren els items 1-14 de 14
-
A flexible experimental laboratory for distributed generation networks based on power inverters
(2017-10-13)
Article
Accés obertIn the recently deregulated electricity market, distributed generation based on renewable sources is becoming more and more relevant. In this area, two main distributed scenarios are focusing the attention of recent research: ... -
A parametric approach for the study of three-phase inverters subject to grid faults
(2022)
Comunicació de congrés
Accés obertThe aim of this work is to describe the behavior of three-phase inverters connected to a faulty grid by means of a parametric approach which gives rise to limaçon of Pascal curves and 3D figures formed by the injected ... -
Active and reactive power strategies with peak current limitation for distributed generation inverters during unbalanced grid faults
(Institute of Electrical and Electronics Engineers (IEEE), 2015-03-01)
Article
Accés obertDistributed generation inverters have become a key element to improve grid efficiency and reliability, particularly during grid faults. Under these severe perturbations, inverter-based power sources should accomplish ... -
Behavior of three-phase inverters under grid faults explained from a geometric perspective
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Text en actes de congrés
Accés obertThe aim of this work is to analyze the dynamic behavior of inverters powered by renewable energy sources (RES) operating under grid faults by means of a geometric point of view. To this purpose, a three-phase grid-connected ... -
Control strategy for distribution generation inverters to maximize the voltage support in the lowest phase during voltage sags
(Institute of Electrical and Electronics Engineers (IEEE), 2017-08-07)
Article
Accés obertIEEE Voltage sags are considered one of the worst perturbations in power systems. Distributed generation power facilities are allowed to disconnect from the grid during grid faults whenever the voltage is below a certain ... -
Control strategy to maximize the power capability of PV three-phase inverters during voltage sags
(2016-04-01)
Article
Accés obertUnder voltage sags, grid-tied photovoltaic inverters should remain connected to the grid according to low-voltage ride-through requirements. During such perturbations, it is interesting to exploit completely the distributed ... -
Coordinated reactive power control for static synchronous compensators under unbalanced voltage sags
(2012)
Text en actes de congrés
Accés restringit per política de l'editorialUnbalanced voltage sags strongly deteriorate the performance of power converters and electrical machines connected to the distribution network. In particular, a reduction of the power quality is noticed in these equipments, ... -
Doubly fed induction generator-based variable-speed wind turbine: proposal of a simplified model under a faulty grid with short-duration faults
(2019-08)
Article
Accés obertThe aim of this study is to provide a simplified model of a variable-speed wind turbine (VSWT) with the technology of a doubly-fed induction generator (DFIG) which operates under faulty grid conditions. A simplified model ... -
New sogi-fll grid frequency monitoring with a finite state machine approach for better response in the face of voltage sag and swell faults
(2020-04-01)
Article
Accés obertThe SOGI-FLL (Second-Order Generalized Integrator–Frequency-Locked Loop) is a well-known and simple adaptive filter that allows for estimating the parameters of grid voltage with a small computational burden. However, the ... -
Optimal voltage-support control for distributed generation inverters in RL grid-faulty networks
(Institute of Electrical and Electronics Engineers (IEEE), 2019-10-30)
Article
Accés obertDuring grid faults, the stability and reliability of the network are compromised, and the risk of a widespread disconnection of distributed generation power facilities is increased. Distributed generation inverters must ... -
Positive sequence voltage control, full negative sequence cancellation and current limitation for static compensators
(Institute of Electrical and Electronics Engineers (IEEE), 2021-12)
Article
Accés obertThis paper presents a control scheme in the stationary reference frame for Static Synchronous Compensators that provides three features: 1) regulation of the positive sequence voltage to the nominal value, 2) full cancellation ... -
SOGI-FLL error-and-hold algorithm for improving the response in face of voltage sags and swells with a small computational burden
(Elsevier, 2023-11-01)
Article
Accés obertThe Second Order Generalized Integrator–Frequency Locked Loop (SOGI-FLL) is a widely used and popular adaptive filter for estimating grid voltage parameters with minimal computational burden. However, it is vulnerable to ... -
SOGI-FLL grid frequency monitoring with an error-based algorithm for a better response in face of voltage sag and swell faults
(2021-06-11)
Article
Accés obert -
Voltage sag mitigation in a PV-based industrial microgrid during grid faults
(Institute of Electrical and Electronics Engineers (IEEE), 2017)
Text en actes de congrés
Accés restringit per política de l'editorialThe growing interests in industrial microgrid and its high power rating, have made it as a good candidate for voltage support purposes. The aim of this paper is to present a reactive current injection control strategy for ...