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Improving voltage support in islanded AC microgrids during unbalanced short-circuit faults
(Institute of Electrical and Electronics Engineers (IEEE), 2024-12-03)
Article
Restricted access - publisher's policyIn the event of a short-circuit fault in an islanded ac microgrid, grid-forming power inverters activate a resistive virtual impedance to protect themselves against over-current, whereas grid-feeding power inverters are ... -
A novel complex power sharing based on sliding mode control for Islanded AC microgrids
(Institute of Electrical and Electronics Engineers (IEEE), 2024-11-13)
Article
Restricted access - publisher's policyThis article introduces a novel complex sliding-mode control strategy for grid-forming inverters in islanded microgrids. This approach offers an alternative to the traditional hierarchical control strategies that typically ... -
Negative-sequence virtual circuit breaker in islanded inverter-based microgrids
(Institute of Electrical and Electronics Engineers (IEEE), 2024-10)
Article
Open AccessUnbalanced loads in islanded inverter-based microgrids induce voltage and current imbalances, posing significant challenges to the operation of critical equipment and sensitive loads. To address this issue, conventional ... -
A sliding-mode control in a new reference frame for three-phase UPFR with extended control range
(Institute of Electrical and Electronics Engineers (IEEE), 2025-01)
Article
Open AccessThis article presents a new switching strategy for a unity power factor rectifier (UPFR) using sliding-mode control (SMC). The traditional SMC in the natural frame suffers from a cross-coupling problem among controllers ... -
Robust voltage unbalance control with inherent current sharing in grid-connected microgrids
(Institute of Electrical and Electronics Engineers (IEEE), 2024-12)
Article
Open AccessGrid-connected ac microgrids (MG) are commonly exposed to voltage quality deterioration due to the presence of voltage imbalance. This article presents a control strategy that enables MG grid-feeding inverters (interfacing ... -
An analysis of the development of the cogeneration sector in Spain: A comprehensive review of the period 1980–2020 from a regulatory perspective
(2024-01-27)
Article
Open AccessCombined Heat and Power (CHP) has been identified by the EU as a powerful resource capable of making substantial contributions to energy savings and reducing GHG emissions. Spain’s effort to promote CHP has been prolific ... -
Voltage support provided by three-phase three-wire inverters with independent reactive phase-current injection
(Institute of Electrical and Electronics Engineers (IEEE), 2024)
Article
Open AccessDuring 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 ... -
Variations of the Gauss Seidel and the gauss implicit z-bus load flow methods for primary-secondary integrated distribution grids
(Elsevier, 2022-09)
Article
Open AccessThe primary and secondary distribution grids are typically designed separately and operated with a radial configuration; therefore, specialized load flow methods only applicable to radial or weakly meshed networks are ... -
Remote multi-nodal voltage unbalance compensation in islanded AC microgrids
(Institute of Electrical and Electronics Engineers (IEEE), 2024-03)
Article
Restricted access - publisher's policyMicrogrids (MG) are exposed to voltage quality deterioration due to the presence of voltage unbalance. To deal with this problem, existing solutions based on Distributed Generation (DG) units interfaced by power electronics ... -
Revisiting classical controller design and tuning with genetic programming
(2023-12-09)
Article
Open AccessThis paper introduces the application of a genetic programming (GP)-based method for the automated design and tuning of process controllers, representing a noteworthy advancement in artificial intelligence (AI) within the ... -
A comprehensive methodology for the statistical characterization of solar irradiation: application to the case of Morocco
(Multidisciplinary Digital Publishing Institute, 2023-03-06)
Article
Open AccessThe prediction and characterization of solar irradiation relies mostly on either the use of complex models or on complicated mathematical techniques, such as artificial neural network (ANN)-based algorithms. This mathematical ... -
Analysis of gas turbine compressor performance after a major maintenance operation using an autoencoder architecture
(Multidisciplinary Digital Publishing Institute (MDPI), 2023-01-21)
Article
Open AccessMachine learning algorithms and the increasing availability of data have radically changed the way how decisions are made in today’s Industry. A wide range of algorithms are being used to monitor industrial processes and ...
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