Events
Seminars
2017
- 1) Course on sliding –mode control for power converters by V.I. Utkin
Dates: 20,23,27 and 28 June 2017
Room/time: Room 331 (11 am)
2013
- 1) Germain Garcia (LAAS-CNRS, Toulouse), "Foundations of Modern Control Techniques for Power Converters"
Dates: March 6th, April 3rd, 10th and 17th, May 8th, 22nd and 29th, June 12th, 19th and 26th
Room/time: 208 (10 am)
2012
- 1) Goce Arsov (Saint Cyril and Saint Methodious University, Skopje, Macedonia), "Modeling and Simulation in Power Electronics"
Dates/time: June 18th (11am to 12h:30 pm) and June 20th (11am to 12h:30)
Room: 331
2011
- 1) Germain Garcia (LAAS-CNRS, Toulouse), "Introduction to linear fractional order systems"
Dates/time: 16th (11am to 1pm) and (3pm to 5 pm) and May 17th (10am to noon)
Room: 331
2010
- 1) Jean Louis Sanchez (LAAS-CNRS, Toulouse), "Power semiconductors devices"
Dates/time: May 12th (11am to 1pm) and (4pm to 6 pm) and May 13th (10 am to 1pm)
Room: 331 - 2) Germain Garcia (LAAS-CNRS, Toulouse), "Linear Matrix Inequalities (LMI) in Control"
Dates/time: May 25th (11am to 1pm) and (3pm to 5 pm) and May 26th (11am to 1pm)
Room: 331 - 3) Giovanni Spagnuolo (University of Salerno), "Maximizing the Electrical Power Produced by PV Systems"
Dates/time: July 13th (11am to 2pm) and July 14th (11am to 2pm)
Room: 331
2009
- 1) Jean Louis Sanchez (LAAS-CNRS, Toulouse) on the following topics:
- "Power semiconductors devices"
Dates/time: May 11th (4pm to 6pm)
- "State of the art and trends in power integrated devices"
Dates/time: May 12th ( 10 am to noon)
- "Activities in Micro and nanosystems at LAAS-CNRS"
Dates/time: May 12th (4pm to 6pm)
Room: 331
- "Power semiconductors devices"
- 2) Germain Garcia (LAAS-CNRS, Toulouse), "Linear Matrix Inequalities (LMI) in Control"
Dates/time: May 21st (noon to 2pm) and (3pm to 5 pm) and May 22nd (11am to 1pm)
Room: 331 - 3) Francisco Rodriguez Rubio (Universidad de Sevilla), "Control Robusto y Aplicaciones " (In Spanish)
Dates/time: 10th (noon to 2pm) and June 11th (11am to 1pm) and (4pm to 6 pm)
Room: 331 - 4) Vadim Utkin (Ohio State University), "Sliding Mode Control in Electro-mechanical Systems"
Dates/time: September (16th and 30th), October (7th , 21st and 28th), November (4th, 11th and 18th) / 3pm to 5pm in all cases
Room: 331
Invited lectures
PAST INVITED LECTURES
2023
- 1) Prof. Sigmund Singer (Tel Aviv University) " Does coupling of charged capacitors by means of loss free resistors imply charge conservation law violation?"
Date: June 15th
Room/time: Room 214 / noon
2022
- 1) Freddy Flores-Bahamonde (Universidad Andrés Bello , Chile) "Partial Power Optimizers in PV Systems"
Date: October 25th
Room/time: Room 331 / noon
2019
- 1) Prof. Jocelyn Sabatier ( U. Bordeaux 1) "Fast charging strategies for lithium-ion batteries"
Date: May 31st 2019
Room/time: 11 am. Room 331 - 2) Prof. Luca Zaccarian (LAAS-CNRS/ University of Trento) "Beyond Clegg integrators and First Order Reset Elements via hybrid dynamical models"
Date: June 21st 2019
Room/time: 331/noon
2018
- 1) Prof. Paul Puleston (National University of La Plata, Argentina) "Algunas aplicaciones de control por modo deslizante en sistemas basados en energías alternativas" (In Spanish)
Date: April 18th
Room/time: Room 331 / noon
2017
- 1) Oscar Barambones (University of Basque Country, Spain), "Control robusto de sistemas de generación eólica" (In Spanish)
Date: April 26th
Room/time: 331 / noon
- 2) Sigmund Singer (Tel Aviv University) , "On the storage properties and applications in power processing systems"
Date: June 6th
Room/time: 208 / 11am - 3) Jocelyn Sabatier (Université de Bordeaux 1), "Applications of fractional differentiation to modelling and control"
Date: June 30th
Room/time: Sala de graus / noon - 4) Leonardo P. Sampaio (Federal University of Technology, Brasil), "Applications of power electronics in PV systems"
Date: December 12th
Room/time: Room 331 / 3:30 pm
2016
- 1) Jocelyn Sabatier (Université de Bordeaux 1), "CRONE control: a robust fractional differentiation and some industrial applications"
Date: April 18th
Room/time: 331 / noon - 2) Damian Giaouris (University of Newcastle), "Modelling of energy management methods in power grids"
Date: May 4th
Room/time: 331 / noon - 3) Sigmund Singer(Tel Aviv University), "On the operation of systems at matched mode conditions"
Date: June 14th
Room/time: 214 / 10am - 4) Luca Corradini (University of Padova), "Small signal modeling and controller design of digitally controlled switched-mode power converters"
Date: October 6th
Room/time: 331 / 10am - 5) Stefano Saggini (University of Udine), "Power MOS gating for balancing efficiency vs. reliability in hard-switching converters"
Date: October 6th
Room/time: 331 / 11am - 6) Marcelo A. Pérez (Universidad Técnica Federico Santa María), "Modelación y control de convertidores multinivel modulares (MMC) para transmisión de corriente continua de alto voltaje(HDVC)" (In Spanish)
Date: October 24th
Room/time: 331 / 11am
2015
- 1) Antonio Lázaro (University Carlos III, Madrid, Spain), "Control de convertidores bidireccionales que utilizan supercondensadores para soportar la frenada regenerativa" (In Spanish)
Date: February 20th
Room/time: 331 / 11am - 2) Jocelyn Sabatier (Université de Bordeaux 1), "Fractional differentiation for ultracapacitors modeling"
Date: May 15th
Room/time: 207 / noon - 3) Jesús Picó Marcó (Polytechnic University of Valencia, Spain), "Can an engineer fix a cell?"
Date: June 26th
Room/time: Sala de Graus (ETSE) / noon - 4) Ferley Castro Aranda (Universidad del Valle, Colombia), "La importancia de la calidad en la medición en el grupo de investigación de alta tensión en la Universidad del Valle"
Date: July 16th
Room/time: 331 / 12h:30m
2014
- 1) J.Sabatier (Université de Bordeaux 1, Bordeaux), "Fractional differentiation and electrochemical systems modeling"
Date: June 9th
Room/time: 331 / 11am - 2) F.Turki (Vahle GmbH&Co.KG, Kamen, Germany), "An introduction to wireless power transfer: basics, applications and design"
Date: June 20th
Room/time: Sala de Graus (ETSE) / 9h30 am. - 3) V.Utkin (Ohio State University, Columbus, Ohio), "Impact of Mathematical Theory of Discontinuous Systems by A.F. Filippov on Sliding Mode Control Methodology"
Date: July 11th
Room/time: 331 / 1pm
2013
- 1) C. Olalla (University of Colorado at Boulder), "A few ideas on the analysis and control of nonlinearities in power converters"
Date: January 31st
Room/time: 331 / 11 am - 2) P. Puleston (Universidad de La Plata), "Sliding-mode control of alternative energy systems"
Date: March 14th
Room/time: 331 / noon - 3) J.Sabatier (Université de Bordeaux 1, Bordeaux), "An application of fractional differentiation to robust control"
Date: May 20th
Room/time: 331 / noon - 4) H. Abu-Rub (Texas A&M University at Qatar), "Examples of research projects being conducted at TAMUQ with emphasis on PV energy conversion"
Date: June 11th
Room/time: 331 / 11 am - 5) M.Essaidi (Mohamed V University, Souissi, Morocco), "An overview on Smart Grids: Technologies, Applications and Research Challenges"
Date: June 28th
Room/time: Sala de Graus (ETSE) / 9h30 am - 6) C.Kunusch (Institute of Industrial Robotics, Polytechnic University of Catalonia),
"New generation of sliding mode algorithms: application to control, observation and identification problems in fuel cells"
Date: June 28th
Room/time: Sala de Graus (ETSE) / 11h30 am - 7) R.Costa-Castelló (Institute of Organization and Control of Industrial Systems, Polytechnic University of Catalonia), "Herramientas Interactivas para la docencia de la Automática" (In Spanish)
Date: July 24th
Room/time: 331 / noon
2012
- 1) J. Sabatier (Université de Bordeaux 1, Bordeaux), "Fractional differentiation for electrochemical systems modeling: application to supercapacitors"
Date: June 7th
Room/time: 331 / 11am - 2) J.J. Rodriguez-Andina (University of Vigo, Spain), "Características y recursos avanzados de las FPGAs. Algunas aplicaciones en electrónica industrial" (In Spanish)
Date: June 19th
Room/time: 331 / 11am - 3) G. Arsov (Saint Cyril and Saint Methodious University , Skopje, Macedonia), "Thermal Considerations in Power Electronics"
Date: June 21st
Room/time: Sala de Graus (ETSE) / 9h45 am - 4) B. Robert (University of Reims , France ), "A methodology for evaluating the fractal dimension of linear switched reluctance motors exhibiting chaotic behavior"
Date: June 21st
Room/time: Sala de Graus (ETSE) / 11h15 am
2011
- 1) C. Alonso (Université Paul Sabatier, Toulouse), "The smart-grid: different possibilities of new research fields"
Date: July 1st
Room/time: Sala de Graus (ETSE) / 9 am
2010
- 1) H. Levi (Université de Bordeaux 1, Bordeaux), "Behavioural modelling and simulation for the design of mixed and multi-technological systems -VHDL-AMS language"
Date: May 6th
Room/time: 331 / noon - 2) J. Millán (CNM-CSIC, Barcelona), "SiC power diodes: process technology and characteristics"
Date: May 12th
Room/time: 331 / 3 pm - 3) J. Sandera (University of Brno), "New techniques and materials in Electronics"
Date: May 24th
Room/time: 331 / 11 am - 4) S. Singer (Tel-Aviv University), "Capacitive matrix converters"
Date: May 27th
Room/time: 215 / 11.30 am
2009
- 1) H. Levi (Université de Bordeaux 1, Bordeaux), "Behavioural modelling and simulation for the design of mixed and multi-technological systems VHDL-AMS language"
Date: May 7th
Room/time: 331 / 11am
Ph.D.Dissertation Exam
Self-oscillating resonant converters : general approach and applications
Ph.D. Student: Ricardo Bonache-Samaniego
Thesis title: Self-oscillating resonant converters : general approach and applications
Supervisor: Carlos Olalla and Luis Martinez-Salamero
Examiners: Francisco Javier Azcondo (Universidad de Cantabria), Abdelali El Aroudi (URV) and Luca Corradini (University of Padova)
Place: Sala de Graus (ETSE)
Date/time: February 23rd 2017 / 11h:15 am
Summary
Self-oscillation in resonant converters is a simple operating mode to generate a sinusoidal signal without requiring an external reference. Scattered in the literature, this mode has been attained by means of different techniques, all having in common the change of the input voltage polarity induced by the internal state of the resonant converter. Due to this spread, the absence of a unified approach in their analysis and the inherent delay in the different processing stages of the feedback path, self-oscillating converters have been relegated to the margins of the main stream in resonant converters, which is largely dominated by a frequency modulation-based operating mode.
A general approach for self-oscillating resonant converters is presented in this dissertation for a particular class of circuits in which the change of input voltage polarity is caused by the zero-crossings of the input inductor current. The key features of the method are an analytical description in the time-domain of a spiral that eventually converges into an ellipse, and a frequency-domain analysis that explains the behavior of the ellipse as a limit cycle. On a theoretical basis, this class of circuits behaves as loss-free resistors because in steady-state the input inductor current is in phase with the first harmonic of the input voltage.
The proposed analytical procedure predicts accurately the amplitude and frequency of the limit cycle and justifies the stability of its generation. This accuracy is reflected in the close agreement between the theoretical expressions and the corresponding simulated and measured waveforms. Second, third and fourth order resonant converters are designed following simple guidelines derived from the theoretical analysis. In addition, a voltage regulation loop is inserted to fully exploit the benefits of the self-oscillation by mitigating the effect of the perturbations entering through the input voltage or the output load.
The problem of delay in the control feedback path is appropriately compensated when dealing with the practical implementation of this class of resonant converters in view of its industrial applications.
Symposia
Social Events
Prof. Vadim Utkin Honorary Doctor of University Rovira i Virgili
Prof. Vadim I. Utkin received the Honorary Doctor Degree of University Rovira i Virgili in November 2011 after a GAEI proposal. The overture in the Honorary Doctor ceremony was performed by Prof. Luis Martinez-Salamero.
Prof. Vadim I. Utkin graduated from Moscow Power Institute (Dipl. Eng.) and received a Ph.D. from the Institute of Control Sciences (Moscow, Russia). He was with the Institute of Control Sciences since 1960, and was Head of the Discontinuous Control Systems Laboratory from 1973 to 1994. He was Ford Chair of Electromechanical Systems from 1994 to 2002 at the Ohio State University.
Prof. Utkin is one of the originators of the concepts of Variable Structure Systems and Sliding Mode Control. He is an author of five books and more than 300 technical papers. In 1975-1978 he was in charge of an international project between his Institute and "Energoinvest", Sarajevo, on the sliding mode control of induction motors. He has worked on the control of D.C., induction, and synchronous drives using sliding mode techniques in metal-cutting machine tools, process control and electric cars. His current research interests are the control of infinite-dimensional plants (including flexible manipulators), sliding modes in discrete time systems, microprocessor implementation of sliding mode control, control of electric drives, alternators and power converters, robotics and motion control.
He is an Honorary Doctor of the University of Sarajevo (Yugoslavia, 1978) and IEEE Fellow. In 1972 he was awarded the Lenin Prize (the highest scientific award in the former USSR), Oldenburger medal of ASME (2003), Humboldt Award (Germany, 2005), elected as a Foreign member of Science and Art Academy of Bosnia and Herzegovina (2008).
Prof. Utkin was IPC chairman of 1990 IFAC Congress in Tallinn; now he is Associate Editor of "International Journal of Control".
Currently Prof. Utkin teaches courses on control principles for undergraduates (Principles of Automatic Control ), and courses in Optimal Control, State Methods for Analysis and Control of Dynamic Systems, and Sliding Mode Control in Electromechanical Systems at the graduate level.
Prof. Utkin has held visiting positions at universities in the USA, UK, Japan, Italy, Spain and Germany. He holds appointments in the Control Research Laboratory of the Department of Electrical Engineering and in the Department of Mechanical Engineering , where he teaches in the System Dynamics, Measurements and Control program.