05. - 07.06.2018
Power Electronics | Intelligent Motion | Renewable Energy | Energy Management
Wednesday, 06.06.2018, 15:15 - 17:30 hrs
Klaus F. Hoffmann, Helmut-Schmidt-University, D
Strategy for Reducing Oscillations in Power Electronic Circuits Using Gate Control
This paper addresses the issue of reducing switching oscillations in a basic power electronic commutation cell. Based on previous publications, an analytical model of the turn-off process is presented leading to an optimization strategy. According to this, an optimum can be found allowing a fast switching transition and thus small switching losses as well as reducing the oscillation amplitude to a minimum and hence, improving electromagnetic compatibility characteristics.
The newest ST's Super-Junction Power MOSFET Technology for the Best Efficiency in Air Conditioning System
Air conditioning system requires energy efficiency improvement and it is driving the semiconductor industry to develop efficient power transistors. STMicroelectronics has developed the newest Super-Junction Power MOSFET technology in MDmesh DM2 fast recovery diode and together with the Trench Field Stop IGBT one, offers a double option to achieve the energy efficiency improvement target. A detailed comparison between the two technologies is provided in a motor drive application up to 1.2kW.
High Efficiency Three-Level Simplified Neutral Point Clamped (3L-SNPC) Inverter with GaN-Si Hybrid Structure
Nominated for the Young Engineer Award
In this paper, a new Three-Level Simplified Neutral Point Clamped inverter with GaN-Si hybrid structure for motor drive applications is introduced. This topology allows the utilization of fast switching capability of new wide bandgap power devices with low blocking voltage together with conventional silicon power devices with high blocking voltage in one system. Thus, the advantages of fast switching power devices
and multilevel inverter topologies are combined and the efficiency can be improved.
Reducing Astable Relay Power Consumption by the Use of a Constant-Current Buck Converter
Relays are essential components for the safety of power converters. Solar AC inverters require two astable relays per line, resulting in eight relays on the AC side. As the race for efficiency in solar converter continues reducing every watt of power becomes mandatory. Relays require a high power at turn on whereas in connected state a reduced lower drive current is sufficient. Based on those needs, an integrated constant current buck relay driver circuit is proposed; it optimizes the system efficiency of power converters while ensuring reliable operation.
Effect of Spurious Resonant Modes on the Operation of Radial Mode Piezoelectric Transformers
This paper analyses the intentional and unintentional resonant vibration modes of operation in radial mode piezoelectric transformers (PTs).
Fuzzy Logic Based Adaptive Controller for AC/DC Boost Converters
AC/DC LED drivers with digital boost converters implement bus voltage regulation emulating analog controllers. This approach has the disadvantage to be computationally expensive. This paper presents a fuzzy logic based adaptive controller for bus voltage regulation. It highlights the lean computation of the fuzzy controller and shows comparative results to a standard analog controller. Simulations confirm the suitability of the proposed methodology for AC/DC boost converters in particular for cost sensitive applications such as in lighting.
Power Supply System with Integrated Energy Storage for Supeconducting Magnets
This paper describes topological implementation of a new two-quadrant family converter with supercapacitor-based energy storage required for the new superconducting magnets of CERN's High-Luminosity Large Hadron Collider, considering operating cycle and superconducting magnet parameters. Converter control design and energy management are presented and verified through simulations of a complete system, providing insight for the future system design.
Novel Thyristor-Based Pulsed Current Converter for a Medical Application - a Conceptual Introduction
Nominated for the Young Engineer Award
A novel ion beam radiation therapy apparatus employing pulsed high magnetic field coils for transporting the ion beam has been proposed. In this paper a new pulsed current converter topology is introduced, which can be used as a pulsed power supply for the therapy apparatus.
University of Sheffield, Sheffield, Grossbritannien
Jack is currently student at the University of Sheffield, having completed a degree in Electrical and Electronic Engineering in 2017. Throughout his degree he completed various projects including designing medical instrumentation, real time EEG imaging and motor design. He has also completed placements at the AMRC in Sheffield and taken part in the Sheffield Undergraduate Research Scheme. Jack is furthering his knowledge by starting a PhD in the area of Piezoelectric Transformers.
Friedrich-Alexander-Universität Erlangen, Erlangen, Deutschland
Alexander Lange graduated in electronics engineering in 2015. Since 2015 he has been with the Chair of Electrical Drives and Machines, University of Erlangen-Nuremberg, Erlangen, Germany, where he is currently working towards his Ph.D. degree. His main research interests include advanced control techniques for power electronics and multilevel inverters for electrical drives.
Otto-von-Guericke-University, Magdeburg, Deutschland
Lars Middelstädt received his M.Sc. degree in Electrical Engineering with focus on power electronics from Otto-von-Guericke-University Magdeburg, Germany, where he is currently with the Chair for Power Electronics working towards his Ph.D.. His research mainly focuses on EMI of power electronic applications.
Infineon Technologies, Neubiberg, Deutschland
Andrea Morici got the M.S. degree in electronic engineering summa cum laude in 2006 and the Ph.D. degree in 2009, both at "Università Politecnica delle Marche", Italy. Since 2014 he is part of Infineon Technologies AG at Power Management and Multimarket division as System Concept Engineer for AC/DC converters and LED lighting. He is author and co-author of several publications in international conferences as well as of international patents.
CERN, Geneva, Schweiz
Maria Papamichali has obtained the Dipl.Ing. in Electrical Engineering at the National Technical University of Athens in 2014, as well as the MSc in Power Engineering at the Technical University of Munich in 2017. She has carried out her Master Thesis work at Power Electronics Laboratory at the École Polytechnique Fédéral de Lausanne. Currently, she is a trainee at the European Organization of Nuclear Research (CERN), where she works in the field of cable testing.
STMicroelectronics, Catania, Italien
Carmelo Parisi received a degree in Electronic Engineering in 2001 from the University of Messina. He joined ST in 2002 as Technical Marketer. Since 2010 he is System Solution Application Dev. Manager for Motor Control in the Power Transistor Division. His main fields of interest are the power conversion for appliance and industrial field, the power switch as IGBT, MOSFET and Intelligent Power Module and Power Module for which he is even product designer.
Technical University of Dresden, Dresden, Deutschland
Stefan Wettengel received a diploma degree in electrical engineering from TU Dresden, Dresden, Germany, where he is currently working as a Ph.D. student. He is involved in a research project designing a novel pulsed current converter as a driver for high-field solenoids for medical applications.