LEO LORENZ received the M.Eng. degree from Univ. of Berlin Germany in 1976 and the PhD. degree (first class Hons.) from University of Munich in 1984 (Germany).
He is currently Technology Advisor for several Research Institutions , Board Member of key Power Electronics Conferences and President of ECPE. From 1988 to 1998 he was Senior Director at Siemens responsible for Power Semiconductor Devices in Automotive & Industrial Application. From 1998 to 2012 he served as Senior Principle in Application and Concept Engineering for all power semiconductor Technologies in Munich/Singapore/Shanghai. In this field he has published more than 400 Journal/conference papers with a high citation rate and is the owner of many basic patents. He gave more than 90 key note presentations at high level Summits and Conferences.
Beside his work in Industry he is a Honorable/Adjunct Professor at several Universities in Germany and Worldwide . In this function he provides courses on power semiconductor technologies and supervised more than 20 PhD Students.
Dr. Lorenz is one of the Key Founder of ECPE (European Center of Power Electronics) and since the foundation in 2003 President of this organization. He is Founder/Co-founder of several conferences such as CIPS (Conference on Integrated Power Systems), PCIM Asia, ISPSD, etc. He served as General Chair of several Conferences e.g. CIPS since 2005, EPE 2005, ISPSD 1997, PCIM since 2001 and is in the Advisory Board of all of these Conferences. Dr. Lorenz received several times the best paper Award at IEEE Conferences. In 1996, 98 and 99 he received the Siemens Innovation Award and from the German Industry Society the Innovation Award in 2002.
Beside these he received several high level IEEE Awards e.g. IEEE-ISPSD Outstanding Contributory Award in 2010 (Japan), the IEEE- Gerald Kliman Innovator Award in 2011 (USA) and the IEEE- William E. Newell Power Electronics Award in 2012 (USA), Ernst Blickle Award in 2015 (Germany), Sun Yun-Suan Honorary Professorship from Nat. Tsing Hua University TW in 2016 and a Dr. Honoris Causa nomination in 2017, Honorary Prof . Xi-An Jiaotong Univ.2018, IEEE Hall of Fame 2018.
He is a distinguished lecturer at several Universities since 2003. He owns an IEEE- Fellowship since 2006 and is a Member of German Academy of Science since 2005. Dr. Lorenz is in the Advisory Board of several Research Institutions e.g. Fraunhofer Institute, Robert Bosch Center, etc. and a Technology Advisor/Reviewer of Governmental Organizations and Funding Programs.
Power Semiconductor Development Trend
- Challenges in Automotive and Railway Applications -
Abstract – Power electronics is a cross-sectional and ubiquitous field as it covers many disciplines, including material science, semiconductor physics and power devices, assembly and interconnection technologies, electrical circuit topologies, and control, in all systems and applications dealing with electric energy from the low Milliwatt range up to Gigawatt power.
The miniaturization of converter systems and increased power density, enabled by modern wide bandgap power semiconductor devices, lead to significant materials savings, e.g. on copper and aluminum. Further innovations are needed in life-cycle assessment and circular economy with a focus on reuse and recycling in power electronics.
Finally, the importance of reliability and availability should be mentioned as reliability is a key differentiator for Europe´s power electronics industry. Reliability is a cross-sectional and multidisciplinary topic starting from the material science behind the degradation mechanisms, covering technology and product qualification and testing, and addressing also intelligent reliability concepts including condition and health monitoring.
However it has to be considered that the new generation of power dies having a smaller chip volume. A smaller chip volume translates into higher switching speed, extremely high knowledge for chip design is required as well as application engineering to operate the devices in short-circuit, avalanche and how to optimize the thermal management. To improve the cooling performance and reliability of the device new chip interfacing technologies have been developed.
The reliability and ruggedness of these new power semiconductors is driven by an advanced chip silicon design and new interfacing and packaging technology. For ultra high efficiency and ultra high power density system solutions WB-devices are being developed. However, it has to be considered that the application engineer is faced with new challenges of how to manage all the parasitic , the thermal management and the circuit design.
In the presentation the development trend of Power Devices will be shown and the challenges in packaging technologies and system application will be discussed. Driven by the working groups organized in ECPE several key reliability requirements in the E-Car (AQG 324) and Railway applications will be shown and discussed.
Academician Prof. Ion Boldea
IEEE Life Fellow
University Politechnica of Timisoara,
Prof. Ion Boldea studied and published extensively on “rotary and liners electric machines, drives and MAGLEVs design, control and testing for energy saving and increased productivity in various industries: from renewable energy, through e-transport, robotics, industrial drives, home appliances and info-gadjets since 1976( ISI H-index 41(4173 citations),Scopus H-index 49(8202 citations),Google Academic H-index 61(6246 citations); he wrote more than 20 Monographs and textbooks in USA and U.K on the wide spectrum subjects above ( 6000 citations in World.cat), held IEEE DLs since 2008, intensive Courses in USA, EU,S. Korea, Brazil, China , tutorials at IEEE Conferences, Technical Consulting annual contracts, hosted IEEE Trans. special issues and spent more than 5 years in many visits since 1973 as visiting scholar in USA.He supervised successfully 24 Ph. D. students.
Main expertise: in design and advanced encoder and encoderless control of ac electric motor/generators for applications: in home appliances,intelligent buildings, robotics, industrial processes, variable speed generators -standard and new- in power systems penetrated by renewable energy and in electric transport(cars, trucks, buses trolley buses, underground METRO, regional and high speed trains, MAGLEVs ); from critical analysis of existing solutions with improvement proposals to potentially- patentable solutions conception, design and control ,with lab prototyping and testing having as support :250+m*m labs and 11 people group(a Research Center for electric energy conversion, processing and storage with advanced digital control for various industries )at University Politehnica Timisoara ,Romania (www.upt.ro”)
He received “IEEE 2015 Nikola Tesla Award” and “2021 EPE-ECCE Outstanding Achievement Award”.
He also cochaired IEEE tech sponsored biannual International Conference OPTIM(now OPTIM-ACEMP) since 1994 and is the founding (since the year 2000)and current Editor in Chief of www.jee.ro, one of the first Internet-only technical Journals. His interests span from Philosophy, Ethics to Gardening mountain hiking and tennis.
Abstract – MAGLEVs are magnetically levitated vehicles with, in general, linear electric motors(LEMs) integrated propulsion and with active or passive guideways for urban and super high speed interurban people or goods emotion.
With no mechanical direct interaction with the guideway, as propulsed directly by LEMS electromagnetic forces, their propulsion is not limited by mechanical friction and thus vehicles can be lighter and the track maintenance costs ,lower than vehicles on wheels. Consequently ,for given door to door travel time MAGLEVs exhibit less KWH/passenger per Km, with low vibration and noise.
The paper summarizes MGLEVs principles with their recent representative implementation design and power electronics control progress both in urban and superhigh speed interurban etransport, for active and, respectively, passive, guideway topologies. The presentation ends by a few minutes animated Video of the 4ton homopolar -linear synchronous motor integrated propulsion-levitation urban MAGLEV lab-prototype(Magnibus-01 at “upt.ro”), with tests on an 150m passive track with 0.8 power factor and efficiency from 10m/s up.
Academician Slobodan Vukosavić
University of Belgrade and
Serbian Academy of Sciences and Arts
Faculty of Electrical Electric Engineering
Belgrade, Serbia firstname.lastname@example.org
Slobodan N. Vukosavic graduated with honours at the Electrical Engineering Department, University of Belgrade. He got his diploma in Power engineering in 1985, and his diploma in Electronics in 1986. He defended the magisterial thesis entitled "Control algorithms for the voltage source inverters" in 1987. The doctoral dissertation "Adaptive digital control of induction motors" is defended 1989. with the same University.
Since 1985, he worked as an R/D engineer with "Nikola Tesla" Institute in Belgrade, engaged with research, development and design of static power converters, electrical drives and digital control systems for industrial and military applications. Relevant projects were closely related with his magisterial thesis, PhD thesis, and his first papers. In 1988, he joined Electronic Speed Control Division of Emerson-Electric in St. Louis, where he developed and patented sensorless controller for brushless permanent magnet motors in HVAC applications. He also developed asymmetrical switched reluctance machines and original power converter topology for SRM supply. Invited by Vickers-Electric, manufacturer of hydraulic actuators, he joined their new R/D team, developing electric actuators for industrial robots. Leading the R/D with Vickers Electric, and later on with MOOG-Electric, he developed motion control products for the car manufacturers and automotive industry in Europe.
He started teaching at the Electrical Engineering Department, University of Belgrade part-time in 1993. and full time from 1995. He was elected associate professor in 1998. and full professor in 2003. In 2003, he was elected adjunct professor at the North Eastern University, Boston. In cooperation with Imperial College, London, he developed a new curriculum in Mechatronics. He established two R/D laboratories: Laboratory for digital control of electrical drives and Laboratory for electrical vehicles. In cooperation with other universities and companies, the laboratories completed 13 international and 20 national R/D projects. He mentored 74 diploma thesis, 17 magisterial thesis, 12 master thesis and 12 PhD thesis.
He conducted research and design of motion control algorithms, servo-amplifiers and servo motors for production automation and industrial robots. As the team leader in R/D departments of Vickers-Electric and Moog, he conducted design and deployment of motion control solutions and several original methods and devices. Developments include one of the first multi-axis servo-amplifiers with proprietary algorithms for the suppression of the mechanical resonance and torsional oscillations, the algorithms for trajectory optimization and the control laws that reduce the losses and increase the energy efficiency. His motion control products and devices are mainly used at European car manufacturers, accounting for more than 80.000 servo axis. Large power, high reliability servo-amplifiers developed in cooperation with Moog are widely used for running the flight simulators and high-pressure injection molding machines.
S. N. Vukosavic published over 250 papers, 50 of them in journals on JCR list. He wrote 10 books, including Digital Control of Electrical Drives, "电机" (Electrical motors), Electrical Machines и Grid-Side Converters Design and Control published by Springer. According to Scopus, his papers were cited 2127 times (excluding self citations) with h = 27.
S. N. Vukosavic is an associate member of the Serbian Academy of Sciences and Arts. He is also a member of Academy of Engineering Sciences of Serbia and Senior member of the IEEE and member of Atiner institute for education and research.
He is associate editor of IET Electric Power Applications, of IEEE Transactions on Energy Conversion, member of editorial board and guest editor of international journal Electronics, member of editorial board of international journal Facta Universitatis: Electronics and Energetics. S. N. Vukosavic is member of program boards of International Symposium on Industrial Electronics (INDEL) and International Symposium on Power Electronics. He is also member of the Advisory Editorial Board of International Journal of Electrical Power & Energy Systems.
Power electronic solution to hardware and control
issues of inverter dominated power systems
Abstract3 – Electrical grids for transmission and distribution of electrical energy comprise an increasing number of grid-side inverters that connect the sources, loads and storage facilities to the grid. Even copper and iron made power transformers are getting replaced by semiconductor based devices. The grid is gradually turning electronic, with grid-side inverter performance ladder raised to several decades of lifetime and considerably higher power-to-weight ratios, the later arising from global shortage of mineral resources, a circumstance which restrains the most ambitious goals of the green agenda. At the same time, evolution of electrical grids implies reduction in equivalent inertia, considerably higher propagation speed of disturbance waves and somewhat lower fault currents supplied by electronic sources. In order to maintain integrity and resilience of the grid, electronic sources have to provide ancillary services. In ac grids with large share of grid-side inverters, both the sources and the loads have to suppress reflection of disturbance waves and implement passivity-based disturbance absorbers. This talk will discuss novel hardware solutions and corresponding controls that could clear the path towards all electronic grid.
Ke Ma (S’09-M’11-SM’18) received the B.Sc. and M.Sc. degrees in electrical engineering from the Zhejiang University, China in 2007 and 2010 respectively. He received the Ph.D. degree from the Aalborg University, Denmark in 2013, where he became an Assistant Professor in 2014. In 2016 he joined the faculty of Shanghai Jiao Tong University, China as a tenure-track Research Professor, and is now serving as the deputy director for Key Laboratory of Control of Power Transmission and Conversion, Ministry of Education, China.
His current research interests include the power electronics and its reliability in the application of renewable energy, HVDC, and motor drive systems. He is now serving as Co-EiC for IEEE Transaction on Industry Applications, Associate Editor for two IEEE Transaction journals, and Vice Chair for two IEEE Technical Committees. He was the receiver of “Excellent Young Wind Doctor Award 2014” by European Academy of Wind Energy, “Outstanding Youth Award 2022” by China Power Supply Society, and several prized paper awards by IEEE.
Mission profile emulation and reliability testing for power electronics
Abstract – Nowadays the working conditions or mission profiles of power electronics are becoming intensive and complicated in various applications. In order to ensure cost-effectiveness with more confidence on the safety and reliability performances, it is important to understand the loading and failure behaviors, as well as the limits of components/systems in practical use. Under this scenario, the recreation of real-field loading and control behaviors for power electronics componernts and systems, are essential, and thus calling for more advanced testing and monitoring methodologies. This talk targets to give updates on the progress of mission profile emulation (MPE) technology in the field of power electronics. The concept, challenges, new applications in the field of MPE, will be covered and disscussed.
Prof. Philippe Ladoux was born in 1963. He received his engineering degree from the Institute of Engineering “ENSEEIHT” of Toulouse in 1987 and his PhD in Electrical Engineering from the “Institut National Polytechnique” of Toulouse, France in 1992. In 1994, he joined the Static Converters Research Group at LAPLACE (Laboratory of Plasma and Energy Conversion ) in Toulouse, for which he was Manager from 2001 to 2009. He is currently Professor at the “Institute of Engineering “ENSEEIHT” in Toulouse where he teaches Power Electronics. His research interests are Multilevel Converters for High Power Applications. The fields of application are Railway Electric Traction as well as Medium and High Voltage Power Systems. Prof. Philippe Ladoux has a strong experience of collaborative research with academic and industrial partners both at national and international levels. He is also involved in the steering committees of the international conferences SPEEDAM and ESARS and in the board of directors of PCIM Europe.
Railway traction Power Supply from the state of the art to future trends
Abstract – Rail is one of the most energy-efficient modes of transport and the lowest emitter of greenhouse gases. Rail is also the most electrified transport sector: three-quarters of passenger travel and half of transported freight is done on electrified lines. According to a 2019 International Energy Agency report, while rail carries 8% of global passenger transport and 7% of freight transport, its energy consumption represents only 2% of total energy demand of the transport sector. High-speed rail is an alternative to short-distance flights between main cities. Rail freight transport is particularly efficient over long distances as it provides a low-emission and low-cost solution in supply chains. In the years to come, rail will play a key role in accelerating the transition to more sustainable mobility.
Nowadays in the world, the distribution of electrified railway routes is as follows: DC° (1.5 kV or 3 kV): °90,000 km; MVAC 15 kV/16.7 Hz: 37,000 km; MVAC 25 kV/50 Hz: 120,000 km. The increase in rail traffic must be accompanied by an improvement in the energy efficiency of the electrification system. This requires the implementation of different power electronic solutions depending on whether the network is electrified in DC or AC. This keynote will first present a state of the art of the main electrification systems and power converters that are used: unbalance compensator, reactive power compensator, power conditioner for 25 kV/50 Hz lines. Frequency changer for 15 kV, 16.7 Hz lines. Reversible substation and storage system for DC electrified lines. The second part of the keynote will be dedicated to the future solutions: full-electronic power supply for 25 kV/50 Hz lines, three-wire power supply for DC lines, MVDC electrification system and introduction of renewable sources.
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.
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.
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