1. Gianluca Cicala, University of Catania, Italy
Electrical Engineering materials for additive manufacturing: from laboratory to industrial applications
The widespread diffusion of desktop Fused Deposition Modelling (FDM) machines combined with the desire to tailor material properties gave rise to an increasing number of research focusing on new material development. However, the choice of commercial materials for FDM is still limited to few polymers only. In most of the cases, consumer FDM machines process mainly PLA and ABS composites. However, there is an increasing interest to develop new technologies to work with electrical engineering polymers like PE, PC, PEI, PEEK etc. In addition to that, an increasing interest toward multifunction polymers filled with nanoparticles for electrical applications is driving research into the development of novel materials which can allow additive manufacturing to exploit the development of novel electrical devices: 3D Printed Electronics – multi-material, heterogeneous, electronic structures exhibiting non-conventional 3D component placement and conductor routing, as nowadays presented in the literature.
The talk emphasizes also our research group focus, on the development of a whole range of materials for FDM ranging from engineering polymers, like PEEK and PEI, to recycled polymers like PE or PLA. All the micro/nano-composites are transformed into filaments of 1.75 mm diameters using two pilot extrusion lines depending on the extrusion temperature. Some of these new filaments were developed and tested with the company Roboze (www.roboze.com) which launched on the market a professional printer capable to process PEEK for industrial oriented applications in electrical engineering. Most of these developments were achieved within the project COMMAND (Composites for Additive Manufacturing). Some insights on new testing approach and protocols for the characterization of FDM materials developed in our group will also be presented.
Gianluca Cicala (Ph.D. in 2004) is a Full Professor in Materials Science and Technology at the University of Catania, Italy. His main research interests include nano/micro-composites and metamaterials, along with electrical characterization and applications. Prof. Cicala has authored and/or co-authored 72 indexed papers in magazines and over 70 in proceedings of national and international conferences, 5 books, 1 National Patent and 1 International patent, receiving a total of 850 citations and 20 h-index. Since 2015, he is member of Editorial board of the journals: Advances in Materials Science and Engineering, and Journal of Applied Biomaterials & Functional Materials, and of Advisory board of the journals: Polymer Engineering and Science, Macromolecular Materials and Engineering, Journal of Applied Polymer Science, Journal of Polymer Science Part B: Polymer Physics, Industrial & Engineering Chemistry Research, European Polymer Journal, Polymer Bulletin, Material and Design, Macromolecular Chemistry & Physics.
2. Mircea Eremia, Politehnica University of Bucharest, Romania
From Smart Grids to Super Grids in Europe: Concepts, technologies and perspectives
The year 2017 marks 125 years of power engineering industry. While the world’s first power system, built by Thomas Alva Edison in New York City, was operated in the DC system, the first single phase AC power system was demonstrated two years later, at an exposition in Turin, Italy, by L. Gaulard.
Today, across the world are operated both AC (220 kV, 400 kV, 750 kV) and DC power systems (±200 kV, ±400 kV, ±600 kV, ±800 kV, and even a prototype for ±1100 kV).
The urbanization level has reached unprecedented peaks. Today, there are more than 28 megacities in the world. Together with the continuously rising electricity demand, power systems vulnerability has also increased, due to the extreme weather conditions associated with the global warming, or because of terrorist attack threats. In this context, the environmental challenges, the energy efficiency policies and the accelerated integration of onshore and offshore wind power plants, but also the massive progress in power electronics and ICT technologies, led to new developments and concepts such as the Smart Grids, Super Grids and Smart Cities, designed with improved supply reliability.
In this new paradigm, a special place is reserved for DC transmission and distribution links and for power electronics FACTS devices. These are a viable solution for transmission capacity increasing, power flow control and stability reserve improvement. Thus, the premises are set for creating a “global power system”.
Mircea Eremia, is Professor Emeritus at the Department of Electrical Power Systems of the University Politehnica of Bucharest, Romania. He received his degree in electrical power engineering and the PhD title in power systems from the same university in 1968 and 1977, respectively. Prof. Eremia is author and co-author of over 180 journals and conference papers as well as 12 books in power systems. He developed research activities within 11 international grants (3 as director), 35 national grants (12 as director), and 58 consultancy contracts (20 as director).
Prof. Eremia is Doctor Honoris Causa of the Technical University “Gheorghe Asachi” of Iasi, Romania (2009), Distinguished Member of CIGRE (since 2004), Senior Member of IEEE (since 2000). Prof. Eremia is also the recipient of: Remus Răduleț Award (2017) of the Romanian Academy of Technical Sciences for the book “Advanced Solutions in Power Systems: HVDC, FACTS, and Artificial Intelligence”; Henry Coandă Award (2017) presented by Romanian Academy and The National Academy Grand Lodge of Romania for a set of three international books; 2013 AGIR Award for the book “Handbook of Electrical Power System Dynamics: Modeling, Stability and Control”; Opera Omnia Award (2011) presented by University “Politehnica” of Bucharest; Constantin Budeanu Award (2002) of the Romanian Academy for the book „Réseaux électriques. Aspects actuels”; IEEE Outstanding Small Chapter Award 2005 – winner (as IEEE PES Romania Chapter, Chair).
Prof. Eremia is member of IEEE Power Systems Stability Subcommittee (since 1999) and IEEE Power Systems Dynamic Performance Committee (since 2002), member of CIGRE SC-B4 for HVDC and Power Electronics (1996 – 2000 and 2000 – 2010) and SC38 for Tools for Power Systems Analysis (2000 – 2002), Chair of IEEE Romania Section (since 2014), and Chair of IEEE PES Romania Chapter (since 2001).
3. Hulusi Bülent Ertan, Atilim University Ankara, Turkey
An Approach for Improving Performance of Sensorless Vector Control
Sensorless vector control methods are preferred in certain applications, because they do not require position or speed sensors, they are most suitable for applications where modification of existing mechanical arrangement is not possible or not desired. However, by their very nature they are likely to make position estimation errors. As a consequence, their frequency response is limited and their performance in general is inferior to vector control applications which employ sensors.
This paper presents an approach which can detect rotor slot harmonic frequency, from motor current supplied from an inverter in such a short time that the position information obtained in this manner can be used to avoid position estimation error in sensorless vector control. In this manner, a sensorless drive performance approaches that of a vector control algorithm with position control.
The essence of the method is to treat the rotor slot harmonics as a harmonic component modulated over the fundamental motor current. By demodulating the current signal, the rotor positon or speed information can be obtained as presented in the paper.
In the paper implementation of the method is presented, as well as the experimental results obtained by testing the approach on an induction motor.
Hulusi Bülent Ertan received B.S. and M.S. degrees in Electrical and Electronics Engineering (EEE) in 1971 and 1973 respectively from Middle East Technical University (METU) in Ankara, Turkey and Ph.D. degree from the University of Leeds, UK in 1977. He is currently a Professor in EEE Department of Atilim University.
He directed many industry supported projects since 1977. He led the Intelligent Energy Conversion Group at TUBITAK (Turkish Scientific and Technological Research Council) Information Technologies and Electronics Research Institute (BILTEN) in Ankara Turkey, between 1999-2006. He is currently executive committee member of Center for Wind Energy, METU and also director of the Electromechanics laboratory. Prof. Ertan was chairman of the Mustafa Parlar Education and Research Foundation in 2000 and he was a member of the executive board of this foundation until 2016.
He has published more than 150 journal and conference papers so far. He is co-editor of two books entitled “Modern Electrical Derives”, Kluwer Academic Publishers, Netherlands, 2000 (NATO ASI series) and ”Transformers: Analysis Design and Measurement” (CRC press, 2013). Prof. Ertan is holder of 5 national and international patents. He received the IEE Overseas Premium award in 1993 and an IEEE award in 2014, for his contributions to the IEEE standard “Trial-use guide for testing permanet magnet machines”.
Professor Ertan is founder of the Aegean International Conference on Electrical Machines and Power Electronics (ACEMP). His research interests are on electrical machine design and drive systems and wind energy conversion.
His current interests are wind energy conversion, traction motor design, hybrid electrical vehicle design and in general design of electrical motors and drives. He is a member of Turkish Chamber of Electrical Engineers and member of IET (UK) and IEEE.
4. Rachid Outbib, University of Aix-Marseille, France
PEM Fuel Cells: from modeling to control
Fuel cell technology, because of its potential for effectively alleviating environmental and resource issues, has been attracting considerable increasing attention. Among the various fuel cells, proton exchange membrane fuel cell (PEMFC), thanks to the high power density and efficiency, low operating temperature, and quick response to load, is the most promising one to be widely applied in both stationary and automotive cases. Control and durability of the fuel cell are two important challenges to made this process suitable for an extensive use in the future.
This talk is dedicated to methods used for modeling and for control of PEMFC fuel cells. The main goal is to present some recent results concerning the approaches that are based on dynamical systems and those that are data driven. More precisely, mathematical models describing behavior main aspects that are the thermal part and the air-feed system will be introduced and discussed. Afterwards, strategies for control of PEMFC will be given and illustrated. Furthermore, the approaches for detecting and for localizing faults in the PEMFC system will be presented. The case of data driven methods and technical based observer design will be introduced.
Rachid OUTBIB is Professor of Automatic Control at the University of Aix-Marseille. He received his Ph. degree in applied mathematics in 1994 and his HDR in automatic control in 1998 from the university of Metz (France) and the university of Amiens (France), respectively. After some positions at different universities as post-doctoral his was assistant professor at university of Nancy (France) from 1999 to 2002. From 2003 to 2006 he was full professor at the university of technology at Belfort (France). Since 2007 he is full professor at university Aix-Marseille (France). He heads ESCODI a research group on automatic control in the lab LSIS. This team is constituted of more than 50 researchers. His main research interests concern control of nonlinear systems methods with applications to energy, fluid power and automotive applications. His research has been supported by various grants from Research Councils and industry. He has published over 150 journal and conference papers.