Plenary and Keynote Session Speeches

Prof. Frede Blaabjerg, Aalborg University, Aalborg, Denmark

Title: Power Electronics Technology - Quo Vadis

Abstract:

The world is becoming more and more electrified combined with that the consumption is steadily increasing – at the same time there is a large transition of power generation from fossil fuel to renewable energy based which all together challenges the modern power system but also gives many opportunities. We see also now big steps being taken to electrify the transportation – both better environment as well as higher efficiency are driving factors. One of the most important technologies to move this forward is the power electronics technology which has been emerging for decades and still challenges are seen in the technology and the applications it is used. This presentation will be a little forward looking (Quo Vadis) in some exciting research areas in order further to improve the technology and the systems it is used in. Following main topics will be discussed

·        The evolution of power devices

·        Renewable Generation

·        Reliability in power electronics

·        Power Electronic based Power System stability

At last some discussions about other hot topics will be given.

Short CV:

Frede Blaabjerg (S’86–M’88–SM’97–F’03) was with ABB-Scandia, Randers, Denmark, from 1987 to 1988. From 1988 to 1992, he got the PhD degree in Electrical Engineering at Aalborg University in 1995. He became an Assistant Professor in 1992, an Associate Professor in 1996, and a Full Professor of power electronics and drives in 1998 at AAU Energy. From 2017 he became a Villum Investigator. He is honoris causa at University Politehnica Timisoara (UPT), Romania in 2017 and Tallinn Technical University (TTU), Estonia in 2018.

His current research interests include power electronics and its applications such as in wind turbines, PV systems, reliability, Power-2-X, power quality and adjustable speed drives. He has published more than 600 journal papers in the fields of power electronics and its applications. He is the co-author of eight monographs and editor of fourteen books in power electronics and its applications eg. the series (4 volumes) Control of Power Electronic Converters and Systems published by Academic Press/Elsevier.

He has received 38 IEEE Prize Paper Awards, the IEEE PELS Distinguished Service Award in 2009, the EPE-PEMC Council Award in 2010, the IEEE William E. Newell Power Electronics Award 2014, the Villum Kann Rasmussen Research Award 2014, the Global Energy Prize in 2019 and the 2020 IEEE Edison Medal. He was the Editor-in-Chief of the IEEE TRANSACTIONS ON POWER ELECTRONICS from 2006 to 2012. He has been Distinguished Lecturer for the IEEE Power Electronics Society from 2005 to 2007 and for the IEEE Industry Applications Society from 2010 to 2011 as well as 2017 to 2018. In 2019-2020 he served as a President of IEEE Power Electronics Society. He has been Vice-President of the Danish Academy of Technical Sciences.

He is nominated in 2014-2021 by Thomson Reuters to be between the most 250 cited researchers in Engineering in the world.

Prof. Ronald Tetzlaff, Institute of Circuits and Systems, TU Dresden, Germany

Title:  Recent results on the edge of chaos in neuron models

Short CV:

Ronald Tetzlaff is a Full Professor of Fundamentals of Electrical Engineering at the Technische Universtität Dresden, Germany. From 1999 to 2003 Ronald Tetzlaff was Associate Editor of the IEEE, Transactions on Circuits and Systems: part I. He was “Distinguished Lecturer” of the IEEE CAS Society (2001 to 2002). He is a member of the scientific committee of different international conferences. He was the chair of the 7th IEEE International Workshop on Cellular Neural Networks and their Applications (CNNA 2002) and organized several special sessions at circuit and systems related conferences. From 2005 to 2007 he was the chair of the IEEE Technical Committee Cellular Neural Networks & Array Computing. Ronald Tetzlaff is a member of the Informationstechnische Gesellschaft (ITG) and the German Society of Electrical Engineers and of the German URSI Committee. Ronald Tetzlaff is in the Editorial Board of the International Journal of Circuit Theory and Applications since 2007 and he is also in the Editorial Board of the IEEE, Transactions on Circuits and Systems: part II since 2016. He was Associate Editor of the AEÜ – International Journal of Electronics and Communications from 2008 to 2016. Ronald Tetzlaff was the chair of the 18th IEEE Workshop on Nonlinear Dynamics of Electronic Systems (NDES 2010), the chair of the 5th International Workshop on Seizure Prediction (IWSP5 2012) , the chair of the 21st European Conference on Circuit Theory and Design (ECCTD 2013), the chair of the 5th Memristor and Memristive Symposium 2016, and of the 15th IEEE International Workshop on Cellular Nanoscale Networks and their Applications (CNNA 2016). Since 2014 he serves as the leader of working group 2 (Memristor Theory, Modelling and Simulation) in the EU COST action MemoCIS (IC 1401) on Memristors – Devices, Models, Circuits, Systems and Applications. Ronald Tetzlaff serves as a reviewer for several journals and for the European Commission.

Prof. Ilia Valov, Peter Grünberg Institute, Jülich, Germany

Title: New Advances in Fundamentals of Memristive Devices – Processes and Materials

Abstract:

Memristive devices have significantly developed in the last decade, expanding their application horizon much beyond memory applications. Especially important is their functionalities as artificial neurons and synapses, making them promising building units for the next generation bio-inspired neuromorphic hardware. Despite a lot has been learned about materials design and the operation principles of memristors, recent research has shown that fundamentals can still be significantly amended, demonstrating new operation principles and functionalities.

In this contribution, the common electrochemical fundamentals of biological and memristive artificial neurons and synapses will be discussed as well as new aspects on materials design and its influence on the physicochemical processes and resulting functionalities of both ECM (CBRAM) and VCM (OxRAM) devices. The effects of the materials and thicknesses of the capping layer appear of special importance and as well the thicknesses and combination of thicknesses of all involved layers. The selection of different materials is changing the electrochemical nanoionics processes and as well the performance of the memrsitors.  For reliable performance the device stack should be considered as a whole, and materials used in the stack and their thicknesses should be coordinated and harmonised.

A special attention will be paid on a new discovered mechanism in oxide ohmic memristors, where both interfaces have ohmic electrodes and no Schottky barrier is necessary to define ON and OFF states. The new mechanism relies entirely on electrochemical processes of oxidation and reduction and depends on the valence state and thickness of filament. The ohmic memritsive devices, demonstrate a number of advantages compared to Schottky-based devices, such as combination of digital and analogue switching in same devices, higher voltage window of stability, lower operating currents, higher OFF to ON ratio, high endurance and retention, high temperature stability. The new-type ohmic devices highlight the importance of fundamental research in the field, providing new functionalities and opportunities for applications.    

Short CV:

Ilia Valov was born in Sofia, Bulgaria, in 1972. He received the Ph.D. degree (summa cum laude) in physical chemistry from the University of Giessen, Giessen, Germany, in 2006. Since 2009, he is working as a Senior Scientist at the Research Center Jülich, Jülich, Germany.

Academic Career

12/2018 -          Head of Group "Nanoelectrochemistry" (PGI-7, Forschungszentrum Jülich)

01/2018            Guest Professor at Tsinghua University, China

2009 - 2018      Senior Scientist at Forschungszentrum Jülich (Institute for Solid State Research, Forschungszentrum Jülich).Teaching at RWTH-Aachen University

2006 - 2009      Post-doc at Justus-Liebig Universität, Gießen

2002-2006        Ph.D at Justus-Liebig-Universität Gießen  (within special priority programm SPP 1136 "Substitutionseffekte in ionischen Festkörpern" of  DFG)

1998-2002        Research Associate at Institut of Physical Chemistry, Bulagrian Academy of Sciences, Sofia, Bulgaria

His current research interests include physico-chemical analysis of redox reactions and transport phenomena in resistive switches.

Peter Grünberg Institute 7 and JARA-FIT, Forschungszentrum Jülich, Jülich, Germany

Institute of Electrochemistry and Energy Systems, Bulgarian Academy of Sciences, Acad. “G. Bonchev” str. Bl.10, 1113 Sofia, Bulgaria

E-Mail: This email address is being protected from spambots. You need JavaScript enabled to view it.