Exploració per tema "Voltage sags"
Ara es mostren els items 1-9 de 9
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A novel voltage sag approach during unintentional islanding scenarios: A survey from real recorded events
(2019-07)
Article
Accés obertIn this paper, a new voltage sag approach is analytically modelled and validated using both simulation and field measurements. The main aspect of this approach is to propose a new voltage sag feature which appears during ... -
A novel voltage sag approach during unintentional islanding scenarios: A survey from real recorded events
(2019)
Text en actes de congrés
Accés obertIn this paper, a new voltage sag approach is proposed, analytically modelled and validated by both simulation and field measurements. The main aim of this approach is to propose a new voltage sag approach, which appears ... -
Avoiding overvoltage problems in three-phase distributed-generation systems during unbalanced voltage sags
(2020-02-01)
Article
Accés obertDuring voltage sags, distributed generation systems must fulfil specific grid-code requirements for reactive current injection. This ancillary service can produce overvoltage problems in networks operating in unbalanced ... -
Fast grid synchronization technique based on a multiple cascaded general integrator scheme for distributed generation inverters
(2012)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper proposes a new structure for grid synchronization based on generalized integrators (GI) that lead to fast detection of positive and negative components of the grid voltage. The GI are used as a band pass ... -
Modeling and control of a three-phase grid-connected inverter under fault conditions
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Text en actes de congrés
Accés restringit per política de l'editorialThe aim of this paper is to study the behavior of a three-phase inverter with an RL filter powered by a renewable energy source and connected to a grid under fault conditions. The novelty of the work lies in proposing a ... -
Power quality disturbances assessment during unintentional islanding scenarios. A contribution to voltage sag studies
(2019-08-20)
Article
Accés obertThis paper presents a novel voltage sag topology that occurs during an unintentional islanding operation (IO) within a distribution network (DN) due to large induction motors (IMs). When a fault occurs, following the circuit ... -
Voltage recovery influence on three-phase grid-connected inverters under voltage sags
(2019-02-12)
Article
Accés obertFaults in power systems cause voltage sags, which, in turn, provoke large current peaks in grid-connected equipment. Then, a complete knowledge of the inverter behaviour is needed to meet fault ride-through capability. The ... -
Voltage support experimental analysis of a low-voltage ride-through strategy applied to grid-connected distributed inverters
(2018-07-27)
Article
Accés obertIn recent decades, different control strategies have been designed for the increasing integration of distributed generation systems. These systems, most of them based on renewable energies, use electronic converters to ... -
Voltage support provided by three-phase three-wire inverters with independent reactive phase-current injection
(Institute of Electrical and Electronics Engineers (IEEE), 2024)
Article
Accés obertDuring voltage sags, three-phase three-wire power inverters can provide voltage support with several current injection strategies. In general, good results are ob- tained, except in overvoltage situations when one or more ...