Vladan Lazarević was born in Bijeljina, Bosnia and Herzegovina, in 1992. He received the B.Sc. degree in electrical and electronics engineering from the School of Electrical Engineering, University of Belgrade, Belgrade, Serbia, in 2015, and the M.Sc. and Ph.D. degrees in power electronics from the Universidad Politécnica de Madrid (UPM), Madrid, Spain, in 2016 and 2021, respectively.
He joined the Centro de Electrónica Industrial (CEI), UPM, in 2015, as a Researcher, where he was actively taking part in several industrial and publicly funded research projects, focusing on design of high-frequency envelope tracking DC/DC converters for RF power amplifiers and fast industrial amplifiers. His PhD thesis involved design, multi-objective optimization and digital control of fast, highly efficient and compact hybrid and switch-mode GaN-based power amplifiers for industrial applications. In the course of his PhD studies, he was an Academic Guest with the Power Electronic System Laboratory, ETH Zurich, Switzerland. He has published 14 scientific publications and has filed 2 patents.
From 2020 to 2022, he was a System Engineer with BRUSA Elektronik AG, Buchs, Switzerland, a pioneer company in the field of E-mobility. His primary role was design and optimization of innovative power conversion systems for automotive applications, such as on-board chargers and DC/DC converters based on GaN and SiC wide bandgap semiconductor technologies, and magnetics design. Since 2022, Dr. Lazarević has been with ABB Corporate Research Centre in Baden, Switzerland, as a Research Scientist, where he has been engaged in various research projects for different ABB business units, aiming for more sustainable, energy-efficient system designs. He is focused on topics such as DC microgrids, with a special attention on interactions and interoperability of power converters, controls and protections in the grid; and potential of modern power electronic technologies, such as advanced power converter topologies and wide bandgap devices for drive applications.

Abstract – Due to the increased penetration of renewable energy sources and numerous advantages of DC power distribution, there is a growing interest in both academic and industry environments towards DC microgrids. Typical application cases involve commercial buildings, industrial plants, datacenters and marine. DC microgrids are entirely based on power electronic converters with rather limited fault current capability, which match different dynamics of the microgrid participants, i.e., the sources and loads. Replacing the conventional AC power distribution systems is, therefore, not a straightforward process. Despite a great deal of scientific publications in the field, fully functional commercial examples are scarce. The main obstacles which impede fast adoption of DC microgrids are lack of standards, challenging protection design, interoperability of different grid components, but also a strong influence of the AC systems legacy. This talk will address the status quo of the DC standardization and will cover recent advances in the technology of power electronic converters and protective devices. The challenges in the interoperability of the grid components will be elaborated and possible solutions discussed.

Dr. Goran Mišković (Senior scientist and Project Manager) IEEE Senior member and nanopackaging TC member. He received his Ph.D. with honors in 2016 from the Vienna University of Technology (TU Wien), where he dealt with metal oxide-based gas sensors, with an accent on the detection of NOx gasses. From 2012 to 2016, he worked as a lecturer and project assistant on two FP7 projects as well as on several bilateral and industrial projects at TU Wien, where he dealt with sensors and actuators fabricated with multilayer Low-Temperature Co-fired Ceramic (LTCC) technology. After completion of his doctoral studies, he switched to the industry and joined TDK Electronics, where he worked in the corporate R&D - innovative topic group. His main activities and responsibilities were the evaluation and assessment of new technologies, concepts and ideas. Since 2020, he has joined Silicon Austria Labs, Austria’s reputable R&D and competence center, and since July 2021 he became a certified IPMA Project Manager. He is a member of the Sensor System research division and his main research interests are in the fields of heterogeneous integration & packaging, sensors & actuators, additive manufacturing, material science and technology, MEMS devices, microsystem technologies, flexible and wearable electronics and hybrid systems.

Abstract – Increased demand for high-end electronic equipment has led to an increase in demand for various packaging-related power electronic components. These high-end devices have very miniaturized circuits due to the need of packing more and more transistors in a small space and sustain very high-power densities (voltage and current) which leads to the generation of large amounts of heat. Traditionally heat sinks based on metallic copper or aluminium have been used. Due to the generation of such large amounts of heat, these assemblies are becoming bulkier and have peaked in terms of technological ingenuity. Traditional manufacturing is providing solutions that are bulky, inefficient, not optimal and etc. for the current and next-generation applications. In this talk, Lithography-based Ceramic Manufacturing (LCM) technology will be presented. This is a novel Additive Manufacturing (AM)-technology capable of realizing high-resolution 3D printing with a multi-material approach. The technology not only enables the combination of different ceramics in different layers of the printed component but also the spatially resolved combination within the same layer and hence, paves the way to the realization of complex bi-phasic ceramic components and most importantly, ceramic-metal combinations could be realized with this technology. Multi-material printing allows to combine of thermal highly conductive and electrically isolating materials like ceramics for best cooling with electrical conducting materials for the best power transfer at the same time, enabling much higher power densities than traditional packaging solutions can achieve. Last but not the least, several examples and conceptual use cases will be presented and discussed within this talk.

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Abstract –

Darko Vračar received the Dipl.-Ing. and Magister degrees in electrical engineering from the School of Electrical Engineering, University of Belgrade, Belgrade, Serbia, in 2000 and 2007, respectively, where he is currently pursuing the Ph.D. degree. His major field of study was power converters and drives.
He is also with BRUSA Elektronik (München) GmbH, Munich, Germany. He has 22 years of industrial experience. Areas of expertise are implementation of telecom and datacenter power supplies, and R&D of power electronics’ systems, such as solar inverters, SMPS for industrial, automotive, and telecom applications. He has published several papers related to power converters and drives and holds one patent in power conversion systems. His research interests include simulation, control, and design of power converters. In addition, he was delivering training sessions related to power electronics’ topics or industrial standards.
Mr. Vračar is a member of the following IEEE Societies: Industry Applications, Industrial Electronics, and Power Electronics. He is a Reviewer of journal Electronics.

Abstract – The increased popularity of battery electric-vehicles (BEV) in last years shifted focus of the research and development activities towards future technologies for the charging infrastructure. The inductive charging of BEV’s batteries is an emerging charging method that is convenient, robust, safe, and efficient. This paper first provides an outlook of trends regarding BEV, market for wireless inductive charging, and system needs. Then it addresses the inductive-charging system (ICS) 11 kVA developed by BRUSA. The latest ICS efficiency measurement results are provided as well as common challenges. Focus of the paper is on architecture and lessons learned during development of auxiliary power supply 800 V of ground assembly of such a complex system. At the end, an overview of the relevant standards is provided together with our solution for the missing data in the IEC 60664-4 standard.

Alex Pacini, Ph.D., is currently employed as Power System Application Engineer at the System Innovation Lab of Infineon, Villach. He received his Ph.D., summa cum laude, from the University of Bologna, Italy, in 2019. His interests are in Resonant Power Converters, Inductive Power Transfer, Electromagnetic Theory, and RF/Microwave Circuit and System Design.

Abstract – With the EV market growing in double digits per year, the pressure to improve the on-board charger (OBC) performance in terms, particularly, of power density, is increasing from currently around 2kW/L to 6kW/L in future generations while still maintaining high efficiency. The challenges of designing on-board chargers relate to the single- and three-phase power processing requirement for worldwide compatibility, and the upcoming trend towards bi-directional power flow capability for V2x application.
In this paper, different concepts for OBCs that are either phase-modular or true 3-phase topologies will be comparatively evaluated and novel single-stage conversion concepts employing monolithic bi-directional GaN switches will be presented.

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