Manel Velasco
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View article: Improving Voltage Ride-Through Procedures in Distributed Generation Systems by Reinforcement Learning
Improving Voltage Ride-Through Procedures in Distributed Generation Systems by Reinforcement Learning Open
During the last two decades, the operation of the electrical grid has undergone significant changes. This evolution is closely tied to the integration of power electronics into distributed generation systems, which led to increased utiliza…
View article: Negative-Sequence Virtual Circuit Breaker in Islanded Inverter-Based Microgrids
Negative-Sequence Virtual Circuit Breaker in Islanded Inverter-Based Microgrids Open
Unbalanced 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 circuit breakers, s…
View article: Robust Voltage Unbalance Control With Inherent Current Sharing in Grid-Connected Microgrids
Robust Voltage Unbalance Control With Inherent Current Sharing in Grid-Connected Microgrids Open
© 2024 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes,crea…
View article: Symbolic and User-friendly Geometric Algebra Routines (SUGAR) for Computations in Matlab
Symbolic and User-friendly Geometric Algebra Routines (SUGAR) for Computations in Matlab Open
Geometric algebra (GA) is a mathematical tool for geometric computing, providing a framework that allows a unified and compact approach to geometric relations which in other mathematical systems are typically described using different more…
View article: Revisiting Classical Controller Design and Tuning with Genetic Programming
Revisiting Classical Controller Design and Tuning with Genetic Programming Open
This 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 realm of control …
View article: Remote Multinodal Voltage Unbalance Compensation in Islanded AC Microgrids
Remote Multinodal Voltage Unbalance Compensation in Islanded AC Microgrids Open
Microgrids (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 offer two type …
View article: Introducing Modelling, Analysis and Control of Three-Phase Electrical Systems Using Geometric Algebra
Introducing Modelling, Analysis and Control of Three-Phase Electrical Systems Using Geometric Algebra Open
State-of-the-art techniques for modeling, analysis and control of three-phase electrical systems belong to the real-valued multi-input/multi-output (MIMO) domain, or to the complex-valued nonlinear single-input/single-output (SISO) domain.…
View article: Revisiting Classical Controllers Design and Tuning with Genetic Programming
Revisiting Classical Controllers Design and Tuning with Genetic Programming Open
This paper introduces the implementation of a genetic programming (GP)-based procedure to the automatic design and tuning of process controllers. The proposed approach makes a significant contribution to the field of artificial intelligenc…
View article: Petri-Nets-Based Controllers Generation Using Genetic Programming
Petri-Nets-Based Controllers Generation Using Genetic Programming Open
Existing research has shown the effectiveness of genetic strategies in generating Petrin-Net (PN)-based controllers, but limitations exist in the ease of controller generation due to the designer’s ability and the system’s complexity. In t…
View article: Maximum current injection method for grid‐forming inverters in an islanded microgrid subject to short circuits
Maximum current injection method for grid‐forming inverters in an islanded microgrid subject to short circuits Open
In 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 for inverter‐…
View article: Analysis of Gas Turbine Compressor Performance after a Major Maintenance Operation Using an Autoencoder Architecture
Analysis of Gas Turbine Compressor Performance after a Major Maintenance Operation Using an Autoencoder Architecture Open
Machine 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 predict process va…
View article: Decoupled Simultaneous Complex Power Sharing and Voltage Regulation in Islanded AC Microgrids
Decoupled Simultaneous Complex Power Sharing and Voltage Regulation in Islanded AC Microgrids Open
© 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, cre…
View article: Collaborative Voltage Unbalance Compensation in Islanded AC Microgrids With Grid-Forming Inverters
Collaborative Voltage Unbalance Compensation in Islanded AC Microgrids With Grid-Forming Inverters Open
© 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, cr…
View article: Control Scheme for Negative-Sequence Voltage Compensation and Current Sharing in Inverter-Based Grid-Connected Microgrids
Control Scheme for Negative-Sequence Voltage Compensation and Current Sharing in Inverter-Based Grid-Connected Microgrids Open
© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, cre…
View article: Machine-Learning-Based Condition Assessment of Gas Turbines—A Review
Machine-Learning-Based Condition Assessment of Gas Turbines—A Review Open
Condition 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 development of new …
View article: Effects of clock deviations on the performance of microgrids based on virtual synchronous generators
Effects of clock deviations on the performance of microgrids based on virtual synchronous generators Open
An inverter‐based microgrid is a small‐scale power network governed by a distributed control system. In this system, the nodes are the digital controllers of the power inverters, normally located at separate points within the microgrid. A …
View article: Condition Assessment of Industrial Gas Turbine Compressor Using a Drift Soft Sensor Based in Autoencoder
Condition Assessment of Industrial Gas Turbine Compressor Using a Drift Soft Sensor Based in Autoencoder Open
Maintenance is the process of preserving the good condition of a system to ensure its reliability and availability to perform specific operations. The way maintenance is nowadays performed in industry is changing thanks to the increasing a…
View article: Positive-Sequence Voltage Control, Full Negative-Sequence Cancellation, and Current Limitation for Static Compensators
Positive-Sequence Voltage Control, Full Negative-Sequence Cancellation, and Current Limitation for Static Compensators Open
This 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 of the negat…
View article: A distributed control for accurate active‐power sharing in islanded microgrids subject to clock drifts
A distributed control for accurate active‐power sharing in islanded microgrids subject to clock drifts Open
Inverters‐based islanded microgrids are operated by local digital signal processors, driven by their own local clocks. These local clocks have drifts affecting the clock signals which are used to control the inverters in real time. In this…
View article: Collaborative Voltage Unbalance Elimination in Grid-Connected AC Microgrids With Grid-Feeding Inverters
Collaborative Voltage Unbalance Elimination in Grid-Connected AC Microgrids With Grid-Feeding Inverters Open
© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, cr…
View article: Negative‐sequence voltage elimination for distributed generators in grid‐feeding operation mode
Negative‐sequence voltage elimination for distributed generators in grid‐feeding operation mode Open
A 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 working simultan…
View article: Droop‐free hierarchical control strategy for inverter‐based AC microgrids
Droop‐free hierarchical control strategy for inverter‐based AC microgrids Open
Hierarchical schemes are widely used for the designing of the inverter‐based AC microgrids control strategies. To ensure reliable operation, hierarchical control must consider together all the functionalities that allow the regulation of k…
View article: Active Power Sharing and Frequency Regulation in Droop-Free Control for Islanded Microgrids Under Electrical and Communication Failures
Active Power Sharing and Frequency Regulation in Droop-Free Control for Islanded Microgrids Under Electrical and Communication Failures Open
© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, cr…
View article: Enabling Grid-Feeding Converters With a Dissonant-Resonant Controller for Negative-Sequence Voltage Elimination
Enabling Grid-Feeding Converters With a Dissonant-Resonant Controller for Negative-Sequence Voltage Elimination Open
© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, cr…
View article: Local Frequency Restoration for Droop-Controlled Parallel Inverters in Islanded Microgrids
Local Frequency Restoration for Droop-Controlled Parallel Inverters in Islanded Microgrids Open
© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, cr…
View article: Analysis of Consensus-Based Islanded Microgrids Subject to Unexpected Electrical and Communication Partitions
Analysis of Consensus-Based Islanded Microgrids Subject to Unexpected Electrical and Communication Partitions Open
© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, cr…
View article: Local Secondary Control for Inverter-Based Islanded Microgrids With Accurate Active Power Sharing Under High-Load Conditions
Local Secondary Control for Inverter-Based Islanded Microgrids With Accurate Active Power Sharing Under High-Load Conditions Open
Local secondary control has been successfully used to regulate the frequency of inverterbased islanded microgrids without using communications.
\nIn this scenario, noticeable steady-state deviations have been observed in active power shari…
View article: Analysis of the Effect of Clock Drifts on Frequency Regulation and Power Sharing in Inverter-Based Islanded Microgrids
Analysis of the Effect of Clock Drifts on Frequency Regulation and Power Sharing in Inverter-Based Islanded Microgrids Open
© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes,crea…