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Dr. Patxi Alkorta
Department of Systems Engineering and Automation. Faculty of Engineering of Gipuzkoa (section Eibar). University of the Basque Country, UPV/EHU. Eibar, Spain.

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Research Keywords & Expertise

0 Adaptive Control
0 Model Predictive Control
0 Robust Control
0 Sliding mode control
0 Nonlinear system control

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Conference paper
Published: 01 July 2021 in EDULEARN21 Proceedings
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ACS Style

Francisco Javier Maseda; Itziar Martija; Aitor Josu Garrido; Patxi Alkorta; Izaskun Garrido. RENEWABLE ENERGY RESEARCH EQUIPMENT AS EDUCATIONAL SCENARIOS FOR TEACHING AND LEARNING PROMOTION. EDULEARN21 Proceedings 2021, 1641 -1648.

AMA Style

Francisco Javier Maseda, Itziar Martija, Aitor Josu Garrido, Patxi Alkorta, Izaskun Garrido. RENEWABLE ENERGY RESEARCH EQUIPMENT AS EDUCATIONAL SCENARIOS FOR TEACHING AND LEARNING PROMOTION. EDULEARN21 Proceedings. 2021; ():1641-1648.

Chicago/Turabian Style

Francisco Javier Maseda; Itziar Martija; Aitor Josu Garrido; Patxi Alkorta; Izaskun Garrido. 2021. "RENEWABLE ENERGY RESEARCH EQUIPMENT AS EDUCATIONAL SCENARIOS FOR TEACHING AND LEARNING PROMOTION." EDULEARN21 Proceedings , no. : 1641-1648.

Journal article
Published: 12 June 2021 in Energies
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Oscillating water column (OWC) systems are water power generation plants that transform wave kinetic energy into electrical energy by a surrounded air column in a chamber that changes its pressure through the waves motion. The chamber pressure output spins a Wells turbine that is linked to a doubly fed induction generator (DFIG), flexible devices that adjust the turbine speed to increase the efficiency. However, there are different nonlinearities associated with these systems such as weather conditions, uncertainties, and turbine stalling phenomenon. In this research, a fuzzy logic controller (FLC) combined with an airflow reference generator (ARG) was designed and validated in a simulation environment to display the efficiency enhancement of an OWC system by the regulation of the turbine speed. Results show that the proposed framework not only increased the system output power, but the stalling is also avoided under different pressure profiles.

ACS Style

Cristian Napole; Oscar Barambones; Mohamed Derbeli; José Cortajarena; Isidro Calvo; Patxi Alkorta; Pablo Bustamante. Double Fed Induction Generator Control Design Based on a Fuzzy Logic Controller for an Oscillating Water Column System. Energies 2021, 14, 3499 .

AMA Style

Cristian Napole, Oscar Barambones, Mohamed Derbeli, José Cortajarena, Isidro Calvo, Patxi Alkorta, Pablo Bustamante. Double Fed Induction Generator Control Design Based on a Fuzzy Logic Controller for an Oscillating Water Column System. Energies. 2021; 14 (12):3499.

Chicago/Turabian Style

Cristian Napole; Oscar Barambones; Mohamed Derbeli; José Cortajarena; Isidro Calvo; Patxi Alkorta; Pablo Bustamante. 2021. "Double Fed Induction Generator Control Design Based on a Fuzzy Logic Controller for an Oscillating Water Column System." Energies 14, no. 12: 3499.

Journal article
Published: 14 April 2021 in Sensors
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This paper presents the design and implementation of a supervisory control and data acquisition (SCADA) system for automatic fault detection. The proposed system offers advantages in three areas: the prognostic capacity for preventive and predictive maintenance, improvement in the quality of the machined product and a reduction in breakdown times. The complementary technologies, the Industrial Internet of Things (IIoT) and various machine learning (ML) techniques, are employed with SCADA systems to obtain the objectives. The analysis of different data sources and the replacement of specific digital sensors with analog sensors improve the prognostic capacity for the detection of faults with an undetermined origin. Also presented is an anomaly detection algorithm to foresee failures and to recognize their occurrence even when they do not register as alarms or events. The improvement in machine availability after the implementation of the novel system guarantees the accomplishment of the proposed objectives.

ACS Style

F. Maseda; Iker López; Itziar Martija; Patxi Alkorta; Aitor Garrido; Izaskun Garrido. Sensors Data Analysis in Supervisory Control and Data Acquisition (SCADA) Systems to Foresee Failures with an Undetermined Origin. Sensors 2021, 21, 2762 .

AMA Style

F. Maseda, Iker López, Itziar Martija, Patxi Alkorta, Aitor Garrido, Izaskun Garrido. Sensors Data Analysis in Supervisory Control and Data Acquisition (SCADA) Systems to Foresee Failures with an Undetermined Origin. Sensors. 2021; 21 (8):2762.

Chicago/Turabian Style

F. Maseda; Iker López; Itziar Martija; Patxi Alkorta; Aitor Garrido; Izaskun Garrido. 2021. "Sensors Data Analysis in Supervisory Control and Data Acquisition (SCADA) Systems to Foresee Failures with an Undetermined Origin." Sensors 21, no. 8: 2762.

Journal article
Published: 11 January 2021 in Mathematics
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Wind-generated energy is a fast-growing source of renewable energy use across the world. A dual-feed induction machine (DFIM) employed in wind generators provides active and reactive, dynamic and static energy support. In this document, the droop control system will be applied to adjust the amplitude and frequency of the grid following the guidelines established for the utility’s smart network supervisor. The wind generator will work with a maximum deloaded power curve, and depending on the reserved active power to compensate the frequency drift, the limit of the reactive power or the variation of the voltage amplitude will be explained. The aim of this paper is to show that the system presented theoretically works correctly on a real platform. The real-time experiments are presented on a test bench based on a 7.5 kW DFIG from Leroy Somer’s commercial machine that is typically used in industrial applications. A synchronous machine that emulates the wind profiles moves the shaft of the DFIG. The amplitude of the microgrid voltage at load variations is improved by regulating the reactive power of the DFIG and this is experimentally proven. The contribution of the active power with the characteristic of the droop control to the load variation is made by means of simulations. Previously, the simulations have been tested with the real system to ensure that the simulations performed faithfully reflect the real system. This is done using a platform based on a real-time interface with the DS1103 from dSPACE.

ACS Style

José Antonio Cortajarena; Oscar Barambones; Patxi Alkorta; Jon Cortajarena. Grid Frequency and Amplitude Control Using DFIG Wind Turbines in a Smart Grid. Mathematics 2021, 9, 143 .

AMA Style

José Antonio Cortajarena, Oscar Barambones, Patxi Alkorta, Jon Cortajarena. Grid Frequency and Amplitude Control Using DFIG Wind Turbines in a Smart Grid. Mathematics. 2021; 9 (2):143.

Chicago/Turabian Style

José Antonio Cortajarena; Oscar Barambones; Patxi Alkorta; Jon Cortajarena. 2021. "Grid Frequency and Amplitude Control Using DFIG Wind Turbines in a Smart Grid." Mathematics 9, no. 2: 143.

Journal article
Published: 27 April 2020 in ISA Transactions
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In this document it is presented and experimentally validated a new linear predictive regulator to control the mechanical speed and the rotor flux of induction motor (IM). The regulator is developed in the synchronous reference frame and it provides a very good dynamic performance and guarantees fulfilment with the current constraints, to avoid over currents in stator windings. This predictive controller employs the minimum necessary dynamic model of the motor to get minor computational cost, in which the rotor flux and the load torque are estimated, and in spite of important parametric uncertainties, the performance is excellent. Moreover, the predictive regulator anticipates the response and compensates the mechanical dead time of the speed induction motor drive, getting better results than the classic speed PI control scheme. This control scheme incorporates the space vector pulse width modulation (SVPWM) with two proportional–integral​ (PI) current controllers, where the rest of dynamics of motor (stator) is controlled and voltage constraints are implemented, ensuring that the modulator always works in the linear area, to prevent distortion in the resulting stator currents. From the experimental tests that have been carried out, it can be concluded that the presented controller provides an effective and robust mechanical velocity and rotor flux tracking, from low to high speed range, with a high accuracy.

ACS Style

Patxi Alkorta; José A. Cortajarena; Oscar Barambones; Francisco J. Maseda. Effective generalized predictive control of induction motor. ISA Transactions 2020, 103, 295 -305.

AMA Style

Patxi Alkorta, José A. Cortajarena, Oscar Barambones, Francisco J. Maseda. Effective generalized predictive control of induction motor. ISA Transactions. 2020; 103 ():295-305.

Chicago/Turabian Style

Patxi Alkorta; José A. Cortajarena; Oscar Barambones; Francisco J. Maseda. 2020. "Effective generalized predictive control of induction motor." ISA Transactions 103, no. : 295-305.

Journal article
Published: 01 February 2020 in Electronics
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This document presents an efficient proportional derivative (PD) position controller for three-phase motor drives. The regulator has been designed in frequency domain, employing the direct–quadrature (d–q) synchronous rotating reference frame and the indirect vector control. The presented position regulator is easy to tune and incorporates a feed forward (FF) term to compensate effectively the effect of the load disturbance. This position controller has been validated experimentally by using two industrial three-phase motors: an induction motor (IM) of 7.5 kW and a permanent magnet synchronous motor (PMSM) of 3.83 kW. The inner proportional integral (PI) current loops of both machines have also been designed in the frequency domain. Each machine has connected in its shaft an incremental encoder of 4096 pulses per revolution, to measure the position. Several simulations and experimental tests have been carried out with both motors, in favorable conditions and also with various types of adversities (parametric uncertainties, unknown load disturbance and measurement noise in the position and current loops), getting very good results and suggesting that this controller could be used in the research area and also in the industry.

ACS Style

Patxi Alkorta; Oscar Barambones; José Antonio Cortajarena; Itziar Martija; Fco. Javier Maseda. Effective Position Control for a Three-Phase Motor. Electronics 2020, 9, 241 .

AMA Style

Patxi Alkorta, Oscar Barambones, José Antonio Cortajarena, Itziar Martija, Fco. Javier Maseda. Effective Position Control for a Three-Phase Motor. Electronics. 2020; 9 (2):241.

Chicago/Turabian Style

Patxi Alkorta; Oscar Barambones; José Antonio Cortajarena; Itziar Martija; Fco. Javier Maseda. 2020. "Effective Position Control for a Three-Phase Motor." Electronics 9, no. 2: 241.

Journal article
Published: 01 October 2017 in Solar Energy
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ACS Style

José Antonio Cortajarena; Oscar Barambones; Patxi Alkorta; Julián De Marcos. Sliding mode control of grid-tied single-phase inverter in a photovoltaic MPPT application. Solar Energy 2017, 155, 793 -804.

AMA Style

José Antonio Cortajarena, Oscar Barambones, Patxi Alkorta, Julián De Marcos. Sliding mode control of grid-tied single-phase inverter in a photovoltaic MPPT application. Solar Energy. 2017; 155 ():793-804.

Chicago/Turabian Style

José Antonio Cortajarena; Oscar Barambones; Patxi Alkorta; Julián De Marcos. 2017. "Sliding mode control of grid-tied single-phase inverter in a photovoltaic MPPT application." Solar Energy 155, no. : 793-804.

Book chapter
Published: 18 November 2015 in Induction Motors - Applications, Control and Fault Diagnostics
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A Robust Induction Motor Control using Sliding Mode Rotor Flux and Load Torque Observers | InTechOpen, Published on: 2015-11-18. Authors: Oscar Barambones, Patxi Alkorta, Jose M. Gonzalez de Duran, et

ACS Style

Oscar Barambones; Patxi Alkorta; Jose M. Gonzalez De Duran; Jose M. Gonzalez De Duran And Jose A. Cortajarena. A Robust Induction Motor Control using Sliding Mode Rotor Flux and Load Torque Observers. Induction Motors - Applications, Control and Fault Diagnostics 2015, 1 .

AMA Style

Oscar Barambones, Patxi Alkorta, Jose M. Gonzalez De Duran, Jose M. Gonzalez De Duran And Jose A. Cortajarena. A Robust Induction Motor Control using Sliding Mode Rotor Flux and Load Torque Observers. Induction Motors - Applications, Control and Fault Diagnostics. 2015; ():1.

Chicago/Turabian Style

Oscar Barambones; Patxi Alkorta; Jose M. Gonzalez De Duran; Jose M. Gonzalez De Duran And Jose A. Cortajarena. 2015. "A Robust Induction Motor Control using Sliding Mode Rotor Flux and Load Torque Observers." Induction Motors - Applications, Control and Fault Diagnostics , no. : 1.

Journal article
Published: 09 October 2014 in Energies
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In this paper, a real time sliding mode control scheme for a variable speed wind turbine that incorporates a doubly feed induction generator is described. In this design, the so-called vector control theory is applied, in order to simplify the system electrical equations. The proposed control scheme involves a low computational cost and therefore can be implemented in real-time applications using a low cost Digital Signal Processor (DSP). The stability analysis of the proposed sliding mode controller under disturbances and parameter uncertainties is provided using the Lyapunov stability theory. A new experimental platform has been designed and constructed in order to analyze the real-time performance of the proposed controller in a real system. Finally, the experimental validation carried out in the experimental platform shows; on the one hand that the proposed controller provides high-performance dynamic characteristics, and on the other hand that this scheme is robust with respect to the uncertainties that usually appear in the real systems.

ACS Style

Oscar Barambones; Jose A. Cortajarena; Patxi Alkorta; Jose M. Gonzalez De Durana. A Real-Time Sliding Mode Control for a Wind Energy System Based on a Doubly Fed Induction Generator. Energies 2014, 7, 6412 -6433.

AMA Style

Oscar Barambones, Jose A. Cortajarena, Patxi Alkorta, Jose M. Gonzalez De Durana. A Real-Time Sliding Mode Control for a Wind Energy System Based on a Doubly Fed Induction Generator. Energies. 2014; 7 (10):6412-6433.

Chicago/Turabian Style

Oscar Barambones; Jose A. Cortajarena; Patxi Alkorta; Jose M. Gonzalez De Durana. 2014. "A Real-Time Sliding Mode Control for a Wind Energy System Based on a Doubly Fed Induction Generator." Energies 7, no. 10: 6412-6433.

Journal article
Published: 01 August 2014 in Journal of the Franklin Institute
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ACS Style

Oscar Barambones; Patxi Alkorta; Jose Gonzalez-De-Durana. A real-time estimation and control scheme for induction motors based on sliding mode theory. Journal of the Franklin Institute 2014, 351, 4251 -4270.

AMA Style

Oscar Barambones, Patxi Alkorta, Jose Gonzalez-De-Durana. A real-time estimation and control scheme for induction motors based on sliding mode theory. Journal of the Franklin Institute. 2014; 351 (8):4251-4270.

Chicago/Turabian Style

Oscar Barambones; Patxi Alkorta; Jose Gonzalez-De-Durana. 2014. "A real-time estimation and control scheme for induction motors based on sliding mode theory." Journal of the Franklin Institute 351, no. 8: 4251-4270.

Journal article
Published: 09 April 2014 in IEEE Transactions on Industrial Electronics
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An adaptive robust position control for real-time high-performance applications of induction motors is developed in this work. The proposed sliding-mode controller provides a global asymptotic position tracking in the presence of model uncertainties and load torque variations. The proposed control scheme incorporates an adaptation law for the switching gain, so that the controller can calculate the switching gain value that is necessary to overcome the existing system uncertainties. The design also incorporates a sliding-mode-based load torque and rotor flux observers in order to improve the control performance without using sensors that increase cost and reduce reliability. The proposed design does not present a high computational cost and, therefore, can be easily implemented in real-time applications. Simulated and experimental results show that this scheme provide high-performance dynamic characteristics, and that it is robust with respect to plant parameter variations and external load disturbances.

ACS Style

Oscar Barambones; Patxi Alkorta. Position Control of the Induction Motor Using an Adaptive Sliding-Mode Controller and Observers. IEEE Transactions on Industrial Electronics 2014, 61, 6556 -6565.

AMA Style

Oscar Barambones, Patxi Alkorta. Position Control of the Induction Motor Using an Adaptive Sliding-Mode Controller and Observers. IEEE Transactions on Industrial Electronics. 2014; 61 (12):6556-6565.

Chicago/Turabian Style

Oscar Barambones; Patxi Alkorta. 2014. "Position Control of the Induction Motor Using an Adaptive Sliding-Mode Controller and Observers." IEEE Transactions on Industrial Electronics 61, no. 12: 6556-6565.

Research article
Published: 15 December 2013 in Mathematical Problems in Engineering
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This paper presents and validates a new proposal for effective speed vector control of induction motors based on linear Generalized Predictive Control (GPC) law. The presented GPC-PI cascade configuration simplifies the design with regard to GPC-GPC cascade configuration, maintaining the advantages of the predictive control algorithm. The robust stability of the closed loop system is demonstrated by the poles placement method for several typical cases of uncertainties in induction motors. The controller has been tested using several simulations and experiments and has been compared with Proportional Integral Derivative (PID) and Sliding Mode (SM) control schemes, obtaining outstanding results in speed tracking even in the presence of parameter uncertainties, unknown load disturbance, and measurement noise in the loop signals, suggesting its use in industrial applications.

ACS Style

Patxi Alkorta; Oscar Barambones; Asier Zubizarreta; José Antonio Cortajarena; Carrillo José Antonio. Effective and Robust Generalized Predictive Speed Control of Induction Motor. Mathematical Problems in Engineering 2013, 2013, 1 -14.

AMA Style

Patxi Alkorta, Oscar Barambones, Asier Zubizarreta, José Antonio Cortajarena, Carrillo José Antonio. Effective and Robust Generalized Predictive Speed Control of Induction Motor. Mathematical Problems in Engineering. 2013; 2013 (2):1-14.

Chicago/Turabian Style

Patxi Alkorta; Oscar Barambones; Asier Zubizarreta; José Antonio Cortajarena; Carrillo José Antonio. 2013. "Effective and Robust Generalized Predictive Speed Control of Induction Motor." Mathematical Problems in Engineering 2013, no. 2: 1-14.

Journal article
Published: 09 September 2013 in IEEE Transactions on Industrial Electronics
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This paper presents the design and the experimental validation of a new linear multivariable generalized predictive control for speed and rotor flux of induction motor. This control approach has been designed in the d-q rotating reference frame, and the indirect vector control has been employed. Load and flux observers, as well as the possibility of including a model-reference-adaptive-system speed estimator, have been considered in the implementation. The proposed controller not only provides enhanced dynamic performance but also guarantees compliance with physical voltage and current constraints. Hence, it ensures that the space vector pulsewidth modulation (SVPWM) always operates in the linear area and that the stator windings are not damaged due to overcurrent. Moreover, the controller includes a novel torque current tracker that allows obtaining an effective electromagnetic torque without a chattering phenomenon. Several simulation and experimental tests have been carried out, both in suitable and adverse conditions, even at zero speed zone, demonstrating that the proposed controller provides an efficient speed tracking and suggesting its use in industry.

ACS Style

Patxi Alkorta; Oscar Barambones; Jose Antonio Cortajarena; Asier Zubizarrreta. Efficient Multivariable Generalized Predictive Control for Sensorless Induction Motor Drives. IEEE Transactions on Industrial Electronics 2013, 61, 5126 -5134.

AMA Style

Patxi Alkorta, Oscar Barambones, Jose Antonio Cortajarena, Asier Zubizarrreta. Efficient Multivariable Generalized Predictive Control for Sensorless Induction Motor Drives. IEEE Transactions on Industrial Electronics. 2013; 61 (9):5126-5134.

Chicago/Turabian Style

Patxi Alkorta; Oscar Barambones; Jose Antonio Cortajarena; Asier Zubizarrreta. 2013. "Efficient Multivariable Generalized Predictive Control for Sensorless Induction Motor Drives." IEEE Transactions on Industrial Electronics 61, no. 9: 5126-5134.

Journal article
Published: 01 March 2011 in Journal of the Franklin Institute
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ACS Style

Oscar Barambones; Patxi Alkorta. A robust vector control for induction motor drives with an adaptive sliding-mode control law. Journal of the Franklin Institute 2011, 348, 300 -314.

AMA Style

Oscar Barambones, Patxi Alkorta. A robust vector control for induction motor drives with an adaptive sliding-mode control law. Journal of the Franklin Institute. 2011; 348 (2):300-314.

Chicago/Turabian Style

Oscar Barambones; Patxi Alkorta. 2011. "A robust vector control for induction motor drives with an adaptive sliding-mode control law." Journal of the Franklin Institute 348, no. 2: 300-314.

Journal article
Published: 07 September 2010 in Asian Journal of Control
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This paper presents a new adaptive robust control for induction motor drives. The proposed control scheme is based on the so‐called field oriented control theory that allows to control the induction motor like a separately excited direct current motor drive, where the field flux (produced by the field current) and the armature flux (produced by the armature current) are decoupled. The robust control law is based on the sliding mode control theory, but unlike the traditional sliding mode control schemes, the proposed design incorporates an adaptive switching gain that avoids the need of calculating an upper limit of the system uncertainties. Moreover the proposed control law is smoothed out in order to avoid the high control activity inherent to the switching control laws. The resulting closed loop system is proven to be stable using the Lyapunov stability theory. Copyright © 2010 John Wiley and Sons Asia Pte Ltd and Chinese Automatic Control Society

ACS Style

O. Barambones; Patxi Alkorta. Vector control for induction motor drives based on adaptive variable structure control algorithm. Asian Journal of Control 2010, 12, 640 -649.

AMA Style

O. Barambones, Patxi Alkorta. Vector control for induction motor drives based on adaptive variable structure control algorithm. Asian Journal of Control. 2010; 12 (5):640-649.

Chicago/Turabian Style

O. Barambones; Patxi Alkorta. 2010. "Vector control for induction motor drives based on adaptive variable structure control algorithm." Asian Journal of Control 12, no. 5: 640-649.