Exploració per autor "Velasco García, Manel"
Ara es mostren els items 33-52 de 66
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Local frequency restoration for droop-controlled parallel inverters in islanded microgrids
(2018-01-01)
Article
Accés obertIn islanded microgrids, voltage source inverters working in parallel are expected to provide regulation of the local frequency while granting active power sharing. This paper presents a local control approach at each ... -
Local secondary control for inverter-based islanded microgrids with accurate active-power sharing under high load conditions
(Institute of Electrical and Electronics Engineers (IEEE), 2018-06-13)
Article
Accés obertLocal secondary control has been successfully used to regulate the frequency of inverterbased islanded microgrids without using communications. In this scenario, noticeable steady-state deviations have been observed in ... -
Lowering traffic without sacrificing performance in networked control systems
(IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
Comunicació de congrés
Accés restringit per política de l'editorialIn Networked Control Systems (NCS), the amount of control data exchanged between sensors, controllers and actuators nodes highly depends on the control performance specifications given to each networked control loop. ... -
LTI ODE-valued neural networks
(2014-05)
Article
Accés restringit per política de l'editorialA dynamical version of the classical McCulloch & Pitts’ neural model is introduced in this paper. In this new approach, artificial neurons are characterized by: i) inputs in the form of differentiable continuous-time ... -
Machine-learning-based condition assessment of gas turbine: a review
(2021-12-15)
Article
Accés obertCondition monitoring, diagnostics, and prognostics are key factors in today’s competitive industrial sector. Equipment digitalisation has increased the amount of available data throughout the industrial process, and the ... -
Maximum current injection method for grid-forming inverters in an islanded microgrid subject to short circuits
(2023-02-03)
Article
Accés obertIn islanded microgrids, when a short circuit or a sudden overload occurs, it provokes an abrupt increment in the currents supplied by the generation nodes, which feed the load collaboratively. This is particularly challenging ... -
Minimizing control cost in resource-constrained control systems: from Feedback scheduling to event-driven control
(IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
Text en actes de congrés
Accés obertThis paper evaluates approaches aimed at minimizing aggregated control cost of a set of controllers that concurrently execute sharing limited computing resources. The evaluation focuses on feedback scheduling and event-driven ... -
Mixing local and distributed reactive power control for balancing inverters' effort in grid-connected photovoltaic systems
(2013)
Text en actes de congrés
Accés restringit per política de l'editorialReactive power control methods have been proven to be a successful technique for maintaining voltages of photovoltaic (PV) distributed generators (DG) within the admissible limits without enforcing to reduce the production ... -
Mixing local and distributed reactive power control for balancing inverters’ effort in grid-connected photovoltaic systems
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Comunicació de congrés
Accés restringit per política de l'editorialReactive power control methods have been proven to be a successful technique for maintaining voltages of photo-voltaic (PV) distributed generators (DG) within the admissible limits without enforcing to reduce the production ... -
Negative-sequence voltage elimination for distributed generators in grid-feeding operation mode
(2020-07-24)
Article
Accés obertA major concern of the power quality in distributed systems is related to the mitigation of voltage imbalances. This function can be implemented directly in the control system of the distributed generation power converters ... -
Networked sliding mode control of the double integrator system using the event-driven self-triggered approach
(2011)
Comunicació de congrés
Accés restringit per política de l'editorialSliding mode control (SMC) methods rely on applying a high-frequency switching control. In networked control systems (NCS), high-frequency operations/transactions are not desirable because communication bandwidth consumption ... -
On Lyapunov sampling for event-driven controllers
(2009)
Text en actes de congrés
Accés obertThis paper investigates an event condition for event-driven controllers based on Lyapunov functions. Considering that constant values of a Lyapunov function define contour curves that form closed regions around the equilibrium ... -
On the optimal reactive power control for grid-connected photovoltaic distributed generation systems
(2015)
Comunicació de congrés
Accés restringit per política de l'editorialThe increasing deployment of distributed generation (DG) such as photovoltaic panels (PV) connected to low-voltage (LV) grids is becoming a common trend in urban areas. The advances of information and communication technology ... -
On the timing of discrete events in event-driven control systems
(2008-04-01)
Article
Accés obertThis paper presents an analysis method to determine offline at what intervals have to be taken the samples for various types of event- driven control systems. -
One-step finite horizon boundary with varying control gain for event-driven networked control systems
(2011)
Text en actes de congrés
Accés obertRecent research has shown that event-driven control requires less samples than time-driven (periodic) control. Consequently, event-driven control applied to Networked Control Systems (NCS) is a good approach for alleviating ... -
Optimal-sampling-inspired self-triggered control
(Institute of Electrical and Electronics Engineers (IEEE), 2015)
Text en actes de congrés
Accés restringit per política de l'editorialSelf-triggered control is an appealing sampling strategy that promises to preserve the same control performance as traditional (periodic) sampling, yet consuming less computing resource by executing the controller less ... -
Performance analysis of frequency restoration for parallel voltage source inverters connected with a realistic communication channel
(2015)
Comunicació de congrés
Accés restringit per política de l'editorialA topic of interest within the microgrid (MG) community is to achieve accurate sharing of active and reactive power among voltage source inverters (VSI) working in parallel while keeping the voltage frequency and amplitude ... -
Performance evaluation framework (PEF) for real-time embedded control systems
(2012-03-14)
Report de recerca
Accés restringit per decisió de l'autorThis report presents a performance evaluation framework (PEF) designed to simulate and implement diverse theoretical results on control and resource performance optimization that has recently appeared in the literature -
Performance evaluation of secondary control policies with respect to digital communications properties in inverter-based islanded microgrids
(Institute of Electrical and Electronics Engineers (IEEE), 2016-09-12)
Article
Accés obertA key challenge for inverted-based microgrids working in islanded mode is to maintain their own frequency and voltage to a certain reference values while regulating the active and reactive power among distributed generators ... -
Performing flexible control on low cost microcontrollers using a minimal real-time kernel
(2008-05-01)
Article
Accés obertIn recent years, approaches to control performance and resource optimization for embedded control systems have been receiving increased attention. Most of them focus on theory, whereas practical aspects are omitted. ...
