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View article: The vagus nerve: a cornerstone for mental health and performance optimization in recreation and elite sports
The vagus nerve: a cornerstone for mental health and performance optimization in recreation and elite sports Open
Decades of physiological and psychological research into human performance and wellness have established a critical role for vagus nerve signaling in peak physical and cognitive performance. We outline models and perspectives that have eme…
View article: The Vagus Nerve: A Cornerstone for Mental Health and Performance Optimization in Recreation and Elite Sports
The Vagus Nerve: A Cornerstone for Mental Health and Performance Optimization in Recreation and Elite Sports Open
This paper explores the emerging role of vagal physiology in optimizing human physical and cognitive performance in sports. Supported by robust evidence from neuroscience and psychophysiology research, the vagus nerve plays a central role …
View article: Neurotechnology for enhancing human operation of robotic and semi-autonomous systems
Neurotechnology for enhancing human operation of robotic and semi-autonomous systems Open
Human operators of remote and semi-autonomous systems must have a high level of executive function to safely and efficiently conduct operations. These operators face unique cognitive challenges when monitoring and controlling robotic machi…
View article: Pulsating power mitigation in poly-source DC microgrids with single-phase inverters: A theoretical analysis
Pulsating power mitigation in poly-source DC microgrids with single-phase inverters: A theoretical analysis Open
This paper describes a method to reduce the DC bus power oscillation in a multi-home building AC–DC hybrid microgrid containing renewable resources, energy storage elements, and building loads. In general, the connection of several single-…
View article: Control of Aggregated Virtual Synchronous Generators for PV Plants Considering Communication Delays
Control of Aggregated Virtual Synchronous Generators for PV Plants Considering Communication Delays Open
In this paper, a new method for the delay compensation when using an aggregation of virtual synchronous generators is proposed. Lack of inertia in power converters can potentially provoke stability issues that can be mitigated by the use o…
View article: Analysis of a Complex-Valued Droop Method for Complete Steady-State Frequency Compensation Using <i>dq-</i>Decomposition
Analysis of a Complex-Valued Droop Method for Complete Steady-State Frequency Compensation Using <i>dq-</i>Decomposition Open
This paper proposes a novel droop technique for AC microgrids with no frequency deviation in steady-state. This droop implementation replaces the conventional and for inductive and resistive lines respectively by a complex-valued droop …
View article: Forecasting of wind turbine synthetic signals based on convolutional neural networks
Forecasting of wind turbine synthetic signals based on convolutional neural networks Open
The importance and future prospects of offshore wind power generation invite great efforts and investments to make it an efficient technology. A crucial aspect is the development of efficient control strategies, which in many cases require…
View article: Distributed Islanding Detection in Multisource DC Microgrids: Pilot Signal Cancelation
Distributed Islanding Detection in Multisource DC Microgrids: Pilot Signal Cancelation Open
Integrating Distributed Generators (DGs) in DC microgrids require islanding detection in all converters. Impedance-based islanding detection methods can be beneficial in single-converter scenarios. However, their implementation in multi-co…
View article: Online parameter estimator of the DC bus capacitor bank for Doubly-Fed Induction Generators
Online parameter estimator of the DC bus capacitor bank for Doubly-Fed Induction Generators Open
This paper proposes an online parameter estimator of the DC Bus (series resistance, capacitance and inductance) used in Doubly-Fed Induction Generators (DFIG) in wind applications. The proposed method relies on electrical variables that ar…
View article: Accurate Rotor Speed Estimation for Low-Power Wind Turbines
Accurate Rotor Speed Estimation for Low-Power Wind Turbines Open
Small grid-tied wind turbines based on permanent magnet generators often use a cost-effective power converter topology consisting of a passive rectifier, a boost converter, and an H-bridge inverter. Speed or position sensors are rarely use…
View article: Design of a Cooperative Voltage Harmonic Compensation Strategy for Islanded Microgrids Combining Virtual Admittance and Repetitive Controller
Design of a Cooperative Voltage Harmonic Compensation Strategy for Islanded Microgrids Combining Virtual Admittance and Repetitive Controller Open
This work was
\nsupported in part by the Research, Technological Development and Innovation
\nProgram of the Spanish Ministry of Economy and Competitiveness, MINECO13-ENE2013-48727-C2-1-R.
View article: Online Impedance Estimation in AC Grids Considering Parallel-Connected Converters
Online Impedance Estimation in AC Grids Considering Parallel-Connected Converters Open
This paper addresses the estimation of the grid impedance under unbalanced conditions in AC Grids with power converter operating in parallel. A Pulsed Signal Injection (PSI) approach is employed for online estimating the grid impedance usi…
View article: Cooperative Control in a Hybrid DC/AC Microgrid based on Hybrid DC/AC Virtual Generators
Cooperative Control in a Hybrid DC/AC Microgrid based on Hybrid DC/AC Virtual Generators Open
This paper deals with the dynamic control of the DC bus voltage and the AC voltage magnitude and frequency in a hybrid DC/AC Microgrid (MG). In order to allow a high penetration of renewable energies, provide an increased system reliabilit…
View article: Predictive Frequency-Based Sequence Estimator for Control of Grid-Tied Converters Under Highly Distorted Conditions
Predictive Frequency-Based Sequence Estimator for Control of Grid-Tied Converters Under Highly Distorted Conditions Open
This paper proposes a novel frequency-based predictive sequence estimator that allows for the isolation of voltages and currents harmonic components needed for the control of grid-tied converters. The proposed method relays on an enhanced …
View article: Predictive frequency-based sequence estimator for control of grid-tied converters under highly distorted conditions
Predictive frequency-based sequence estimator for control of grid-tied converters under highly distorted conditions Open
This paper proposes a novel frequency-based predictive sequence extractor that allows to isolate the harmonic components of both voltages and currents needed for the control of grid-tied converters. The proposed method is based on a modifi…
View article: Passive Islanding Detection Using Inverter Nonlinear Effects
Passive Islanding Detection Using Inverter Nonlinear Effects Open
This paper analyzes the use of the voltage distortions in pulse width modulation voltage-source inverters caused by the inverter switching for islanding detection purposes. The nonideal characteristics of the inverters, mainly due to the d…
View article: Evaluation of high frequency signal injection islanding detection based methods under non-linear-loads scenarios
Evaluation of high frequency signal injection islanding detection based methods under non-linear-loads scenarios Open
Islanding detection has been the focus of significant research efforts during the last years. Islanding detection methods can be remote or local, the last being further divided into active and passive methods. Active methods have a reduced…
View article: Sensorless speed control of a small wind turbine using the rectifier voltage ripple
Sensorless speed control of a small wind turbine using the rectifier voltage ripple Open
Grid-tied small wind turbines based on permanent magnet generators are usually operated using a basic converter topology based on a passive rectifier, a boost converter, and an H-bridge inverter. The rotor speed signal is rarely obtained f…
View article: Design of a cooperative voltage harmonic compensation strategy for islanded microgrids combining virtual admittance and repetitive controller
Design of a cooperative voltage harmonic compensation strategy for islanded microgrids combining virtual admittance and repetitive controller Open
Non-linear loads (NLLs) in three-phase systems are known to produce current harmonics at -5, 7, -11, 13... times the fundamental frequency; harmonics of the same frequencies are induced in microgrid voltage, reducing therefore the power qu…
View article: Virtual Admittance Loop for Voltage Harmonic Compensation in Microgrids
Virtual Admittance Loop for Voltage Harmonic Compensation in Microgrids Open
The use of the virtual admittance concept for harmonic and/or unbalance compensation in microgrids when multiple inverters operate in parallel is proposed in this paper. The virtual impedance concept has been traditionally used for these p…