King Mongkut’s Institute of Technology Ladkrabang
Electric Vehicle Charging Station Infrastructure incorporating with an Energy Management and Demand Response Technique
Abstract – A study of suitable electrical vehicle (EV) charging infrastructure, Demand Response (DR) function and Energy management for an EV is presented in this paper. The proposed technique is to prevent the electrical system within the rated power by controlling electric vehicle chargers loads to the electrical system. A power management method for limiting the charging current and charging time by using state of charge (SOC) as a priority point index is developed. The power management method is also developed as a calculation algorithm for determining the charging current limit rating for electric vehicle chargers. The simulation model is also developed for validating a DR management function of the electric vehicle charger according to Provincial Electricity Authority of Thailand (PEA) load characteristic data. The results show that the proposed DR function can manage the charging current of each electric vehicle charger appropriately. Also. the proposed technique can prevent the rated power demand of the transformer distribution. The study illustrates that this method is an effective protection for the distribution transformer and can be able to apply as a DR function to manage electrical energy more efficiently
Surin Khomfoi was born in Thailand. He received his B.Eng. and M.Eng. in Electrical Engineering from the King Mongkut’s Institute of Technology Ladkrabang (KMITL), Bangkok, Thailand, in 1996 and 2000, respectively; and his Ph.D. degree in Electrical Engineering at the University of Tennessee, Knoxville, TN, USA, in 2007. Since December 1997, he has been a lecturer with the Department of Electrical Engineering, KMITL, where he is currently a professor. His current research interests include multilevel power converters, renewable energy applications, fault diagnosis, electric vehicle infrastructure and smartgrids. Dr. Khomfoi is a Member of the Eta Kappa Nu Honor Society and a Senior Member of the IEEE. He was a recipient of academic scholarship awards, including full academic scholarship for his B.Eng., M.Eng., and Ph.D. studies from the Energy Policy and Planning Office (EPPO), Ministry of Energy Thailand
Tokyo Institute of Technology
Developments of Switched Reluctance and Induction Motors for Automotive Applications
Abstract – In this presentation, general views of recent energy friendly vehicles are introduced. Then, principles of operations of hybrid electrical vehicles are reviewed. Characteristics of rare-earth permanent magnet electrical motors and generators of a leading hybrid vehicle are presented. A number of electrification of automotives will be increased, thus, the limited supply of the rare-earth PM will be a problem. There are possible solutions by switched reluctance motors and induction motors. In short, switched reluctance motors will be a good candidate from several ten kW if the acoustic and vibration matters are allowed. In addition, induction motors can be a good solution if the rated output power is a few hundred kW.
Prof. Akira Chiba (Fellow, IEEE) received the B.S., M.S., and Ph.D. degrees in Electrical Engineering from the Tokyo Institute of Technology, Tokyo, Japan, in 1983, 1985, and 1988, respectively. Since 2010, he has been a Professor with the School of Engineering, Tokyo Institute of Technology, Tokyo, Japan. He has been studying magnetically suspended bearingless ac motors, super high-speed motor and drives, and rare-earth-free-motors for automotive applications.
Dr. Chiba has so far authored or coauthored more than 1170 papers including the first book on Magnetic bearings and bearingless drives (2005).
Dr. Chiba was the recipient of the First Prize Paper Award from the Electrical Machine Committee in the IEEE IAS in 2011 on a rare-earth-free motor, the second and third place Best Paper Awards in IEEE Transactions on Energy Conversion in 2016 and 2017, respectively, the IEEJ Prize Paper Awards in 1998, 2005, 2018.
Dr. Chiba is the recipient of the 2020 IEEE Nikola Tesla Award, one of the IEEE Field Awards.
He served as Secretary, Vice-Chair, Vice-Chair-Chair-Elect, Chair, and Past-Chair in the Motor Sub-Committee in the IEEE PES in 2007–2016. He served as a Chair in IEEE-IAS Japan Chapter in 2010–2011. He was ECCE Vice-Chair in Technical Committee during 2016–2019. He was one of the Technical Co-Chairs in IEEE IEMDC 2017 held in Miami, FL, USA. He is TCPRC and was an Associate Editor in IEEE Transactions on Industry Applications since 2020 and from 2011 to 2019, respectively.
He was Founding Chair in the Motor Technical Committee in Japan Society of Automotive Society in 2012–2018. He has served as Secretary, Vice Chair, and Chair in IEEE-IAS Electric Machine Committee since 2016. He has served as an Editor in IEEE Transactions on Energy Conversion since 2013. He served as the IEEE IAS Fellow Committee Executives during 2017- 2020. He has been the Chair in IEEJ Electric Machine Committee since 2020.
He has served as an Examiner in the Nagamori Award since 2015.
Harbin Institute of Technology
AC Motor Field-Weakening Control for High-Speed Operation-Overmodulation Strategy and Dynamic Mechanism
Abstract – The high-performance AC motor drives have been developed for over 30 years. Many key technologies have been proposed, such as vector control, direct torque control, and wide-speed range sensorless drive etc. However, it is still challenging to achieve high-performance control in extreme-speed region. This closely related to the high-end industry applications, such as intelligent manufacturing, high-speed locomotive, and all-electric aircraft etc. This keynote presentation will introduce the state-of-art of AC motor design and drives in extreme high-speed region, and present the control strategies for industry applications. Both induction motor (IM) and permanent magnet synchronous motor (PMSM) drive systems will be presented for extreme-high speed region.
Dianguo Xu received the MS and PhD degrees in Electrical Engineering from Harbin Institute of Technology (HIT), Harbin, China, in 1984 and 1989, respectively. In 1984, he joined the Department of Electrical Engineering, HIT as an assistant professor. Since 1994, he has been a professor in the Department of Electrical Engineering, HIT. His research interests include renewable energy and smart grid technologies, power converters and control, sensorless vector controlled motor drives, high performance servo system. Dr. Xu is a fellow of IEEE, an Associate Editor of the IEEE Transactions on Industrial Electronics, the IEEE Journal of Emerging and Selected Topics in Power Electronics, and Co-EIC of the IEEE Transactions on Power Electronics, and. He serves as Chairman of IEEE Harbin Section. He has received 21 IEEE Prize Paper Awards including First Place Prize Paper Award for 2018 and Second Place Prize Paper Award for 2017 in the IEEE Transactions on Power Electronics. He is the recipient of the IEEE Industry Applications Society Outstanding Achievement Award in 2018
Incheon National University
Robust Design of Permanent Magnet Motor for EV Applications – Based on Fault Analysis and Diagnosis
Abstract – In this presentation, the robust design of the permanent magnet motor is introduced. Recently, the permanent magnet motors applied to electric vehicles (EV) and hybrid electric vehicles (HEV) are the main power sources, requiring higher power density, higher efficiency, and higher reliability.
From the viewpoint of the reliability, it is very important to analyze the cause of the motor driving failure through its fault analysis and to develop a motor system with high reliability through a design resistant to the fault.
Therefore, the characteristic analysis results for the inter-turn fault, permanent magnet fault, bearing fault, etc. as a main fault factors will be reviewed and introduced the method to reduce the failure based on the research results. Also, the areas to be considered for the design of reliable motors will be introduced.
In addition, research results on how to condition monitoring for fault essential for high operation efficiency and reliable operation will be addressed. Finally, the effective fault detection through the proposed methods and fault response control through them will be reviewed.
Prof. Jin Hur (Fellow, IEEE) received the Ph.D. degree in electrical engineering from Hanyang University, Seoul, South Korea, in 1999. From 1999 to 2000, he was with the Department of Electric Engineering, Texas A&M University, College Station, TX, USA, as a Postdoctoral Research Associate. From 2000 to 2001, he was a Research Professor of Electrical Engineering for BK21 projects at Hanyang University. From 2002 to 2007, he was a Director of Intelligent Mechatronics Research Center, Korea Electronics Technology Institute (KETI), Korea, where he worked on the development of motorized systems for HEV and EV. From 2008 to August, 2015, he was an Associate Professor with the School of Electric Engineering, at the University of Ulsan, Ulsan, South Korea. Since August, 2015, he has been a Professor with the Department of Electrical Engineering, at the Incheon National University, Incheon, South Korea. His current research interests include designing, condition monitoring, and diagnostics of permanent magnet motors and their drives for mobility applications.
Dr. Hur has authored and coauthored over 300 papers on electric machine design, analysis and control. He also has more than 40 pending Korean patents including one pending US patent and received 20 Paper Awards from many conferences including the IEEE Vehicular Technology Society (VTS) and IEEE Power Electronics Society (PELS). He served as an Associate Editor for IEEE Transactions on Vehicular Technology and currently is serving as an Associate Editor for IEEE TRANSACTION ON POWER ELECTRONICS.
Director of the Institute for Aerospace Technology, University of Nottingham
Towards Net Zero Aviation: Technologies and Challenges for Aircraft Electric Power Systems
Abstract – Electrification of aircraft is considered as the most promising solution to reduce environmental impact of aviation sector in order to achieve ambitious net zero targets. This trend means reconsideration of all onboard systems to employ electrically driven technologies. However, this change tremendously increases both the total electrical power budget required onboard and the complexity of aircraft electric power systems (EPS) that generate, store, manage, and distribute the power. Currently, significant changes are observed during the transition from conventional to more-electric aircraft (MEA) in which only some systems transferred to electrical energy sourcing, and towards all-electric aircraft (AEA) which also has an electrified propulsion system. This keynote will discuss the state-of-the-art EPS technologies, key challenges and trends, including architectures, power sources and voltage levels, EPS control and management, power quality, protections. Particular attention will be paid to the technologies required for main EPS components, including energy sources, power electronics, electric machines, circuit breakers and others, and to the review of the challenges and potential solutions towards meeting EPS requirements for future electrified flying vehicles.
Prof Serhiy Bozhko (M’1997, SM’2018) is Professor of Aircraft Electric Power Systems and Director of the Institute for Aerospace Technology at the University of Nottingham. He has received his M.Sc. and Ph.D. degrees in electromechanical systems from the National Technical University of Ukraine, in 1987 and 1994, respectively. Since 2000, he has been with the Power Electronics, Machines and Controls Research Group of the University of Nottingham, United Kingdom. His research interests are in the area of aircraft electric power systems, including their architectures and topologies, electrical energy generation, conversion and distribution, associated control systems, electric power quality and stability, power management and optimisation, as well as advanced modelling and simulation methods. He participated in core European Aerospace projects including MOET, Clean Sky, Actuation-2015 and Clean Sky 2. Prof S Bozhko is a member of SAE AE-7 International Standards Committee for Aircraft Electric Power Systems. He is also among the organizers of major conferences in the field including ones led by IEEE-ITEC and SAE. In 2018, he was the General Chair of “IEEE ESARS-ITEC Europe” Conference.
Currently, Prof S Bozhko is the Principal Investigator and the Project Coordinator for several H2020 and industrial projects with the total budget in excess of 17M€.