Tutorials

Tutorial speaker
Topic

Prof.J. Marcos Alonso

Prof. Udaya K. Madawala

Prof. Ramon Blasco-Gimenez

Prof. C.K. Michael Tse

Prof. Chris Mi

Prof. Jinjun Liu

Prof. Toshihisa Shimizu

 

Tutorial speaker 1:

Topic: LED Lighting and Drivers

Prof. J. Marcos Alonso

University of Oviedo, in Asturias, Spain

Brief biography

Prof. Alonso received the M. Sc. Degree and Ph. D. both in electrical engineering from the University of Oviedo, Spain, in 1990 and 1994 respectively. Since 2007, he is a full Professor at the Electrical Engineering Department of the University of Oviedo, in Asturias, Spain.

Prof. Alonso is co-author of more than 300 journal and conference publications, including more than 70 publications in highly referenced journals. His research interests include electronic ballasts, LED power supplies, power factor correction, dc-dc converters, soft-switching converters, resonant inverters and high frequency switching converters in general. He was supervisor of 8 Ph.D. Thesis and he is the holder of 7 Spanish patents. He has participated in more than 50 research projects and contracts with companies. He has been a visiting researcher at the Federal University of Santa Maria, Santa Maria, Brazil, in 2011 and 2014, and at the Center for Power Electronics Systems, Virginia Tech., Blacksburg, USA, in 2013.

Prof. Alonso has been awarded with the Early Career Award of the IEEE Industrial Electronics Society in 2006. He was honored with the University of Oviedo Electrical Engineering Doctorate Award for 1996. Prof. Alonso was also awarded with the National Funding for Intensification of Research Activity for the period 2008-2012. He also holds three IEEE paper awards. Since 2002, he serves as an Associate Editor of the IEEE Transactions on Power Electronics. He has been Guest Editor of two special issues in lighting applications published in IEEE Transactions on Power Electronics (2007) and IEEE Transactions on Industrial Electronics (2012) and has organized several IEEE Conference Special Sessions. He presently serves as Secretary of the IEEE IAS Industrial Lighting and Display Committee (ILDC). He has been elected as Member-at-Large of the IEEE IAS Executive Board for the term 2013-2014. He is a member of the Power Electronics Technical Committee (PETC) of the IEEE Industrial Electronics Society. He is also a member of the European Power Electronics Association and he belongs to the International Steering Committee of the European Conference on Power Electronics and Applications (EPE).

Abstract

LEDs are becoming an attractive light source owing to their high reliability, long life, high color rendering index and small size. In addition, there are commercially available units that can reach a luminous efficacy as high as 100 lumen/W. These features make LEDs excellent candidates to override fluorescent and other discharge lamps in many applications, including street-lighting, automotive lighting, decorative applications and household appliances. However, power LEDs are still far from being a panacea since they still suffer from several drawbacks. First, due to their nearly constant-voltage behavior, they cannot be supplied from the dc or ac voltage source directly. Therefore, some kind of current-limiting device must be used, similarly to the ballast used to limit the current through a discharge lamp. On the other hand, the high efficacy of power LEDs is only maintained under tight operating conditions, which include low direct current and low junction temperature. This talk will deal with topics related to LED driving, including: introduction to lighting and vision, color theory, LED behavior and modeling, thermal management, dimming, DC-supplied LED drivers and off-line LED drivers.

 

Tutorial speaker 2:

Topic: Grid Integration of Electric Vehicles: Wired and Wireless Solutions

Prof. Udaya K. Madawala

University of Auckland, New Zealand

Brief biography

Udaya K. Madawala (Senior Member IEEE) graduated with B. Sc. (Electrical Engineering) (Hons) from The University of Moratuwa, Sri Lanka in 1987 and received his PhD (Power Electronics) from The University of Auckland, New Zealand in 1993 as a Commonwealth Scholar. At the completion of his PhD, he was employed by Fisher & Paykel Ltd, New Zealand, as a Research and Development Engineer to develop new technologies for motor drives in washing machines. In 1997, he joined the Department of Electrical and Computer Engineering at The University of Auckland as a Research Fellow, and is currently works as a Full Professor, focusing on a number of energy related power electronics projects.

Professor Madawala has over 27 years of both industry and research experience in the fields of power electronics and magnetics. At present, he serves as an Associate Editor for IEEE Transactions on Industrial Electronics and IEEE Transactions on Power Electronics, and is a member of the Power Electronics Technical Committee and Renewable Energy Committee of IEEE Industrial Electronic Society and Power Electronics Society, respectively. He has approximately 200 international journal and conference publications, and holds a number of patents on Inductive Power Transfer and power converters with several pending. His research interests are in the fields of renewable energy, power electronics and inductive power transfer, for which he renders his service as a consultant to industry.

Abstract

Renewable Energy (RE) sources, energy storage systems and Electric Vehicles (EVs) can be considered as partial solutions to global energy crisis as well as for sustainable living. The interface that facilitates either uni- or bi-directional power flow between the grid and EVs/REs is an indispensable component of all these solutions. An efficient, compact and reliable power interface is, therefore, vital for grid integration of both EVs and REs. Consequently, grid integration has become one of the main focuses of current research in both industrial and academic community.

This tutorial presents trends, together with the latest advances, in grid integration of EVs. Both wired and wireless solutions, employed for grid integration of EVs, are discussed along with battery management systems. Inductive Power Transfer (IPT) technology, widely used for wireless grid integration of EVs, is discussed in detail, covering both uni- and bidirectional power flows. Different concepts and control strategies that have been proposed and implemented as wired solutions are also presented.

 

Tutorial speaker 3:

Topic: HVDC Grids and Renewable Energy Integration

Prof. Ramon Blasco-Gimenez

Technical University of Valencia, Spain

Brief biography

Prof. Ramon Blasco-Gimenez obtained his BEng. degree from the Technical University of Valencia, Spain, in 1992, and his Ph.D. degree in Electrical and Electronic Engineering from the University of Nottingham, U.K., in 1996.
From 1992 to 1995, he was a Research Assistant in the Department of Electrical and Electronic Engineering, University of Nottingham. He is currently a Professor at the Dept. of Systems Engineering and Control of the Technical University of Valencia, where he teaches advanced control techniques and control of drives. He has been a consultant to main Spanish utilities on integration of wind farms in weak grids and to large wind farm operators on risk based operation and maintenance of off-shore wind farms. His research interests include control of motor drives, wind power generation, off-shore wind farms and grid integration of renewable energy.

Prof. Blasco-Gimenez has been a co-recipient of the 2005 IEEE Transactions on Industrial Electronics Best Paper Award. He is a Senior Member of the IEEE, member of the Electrimacs Committee, Chartered Engineer (U.K.), member of the Institute of Engineering and Technology and guest researcher of the Solar Energy Research Centre SERC-Chile. Prof. Blasco-Gimenez is currently the chair of the IEEE Industrial Electronics Society Renewable Energy Technical Committee.
Abstract

HVDC grids and renewable energy integration

HVDC grids are being developed to integrate large amounts of renewable energy into the electric system, to allow for easier integration of  electric systems and markets and to connect load centers to renewable energy generation centers.

The increased efficiency and reduced cost of current power electronics solutions have made the use of HVDC grids more competitive. New grid access technologies, based on the use of diode rectifiers for the connection of large wind farms (1GW or more) to HVdc grids will be available from 2016. These technologies, pioneered by the Universitat Politecnica de Valencia will lead to a substantial reduction on both installation and operation costs of the new large wind farms to be installed in Germany to take over the phasing-out of existing nuclear reactors.

Important technical challenges need to be addressed, such as response to DC faults, interaction between AC and DC grids, DC-DC converters and power flow control in HVdc grids.

At this scale, the wind power plants (WPPs) and PV plants, should be able to provide ancillary services and contribute to system restoration during black-outs.

The tutorial will cover the aforementioned issues, including also converter topologies to be used in HVdc grids, their control and how Wind Power Plants can contribute to service restoration.

TUTORIAL OUTLINE:
- Introduction. European supergird. Off-shore wind power plants.
- Point-to-point connection of wind power plants using VSC-HVDC stations
- Point-to-point connection of wind power plants using Diode Rectifier-HVDC stations
- Wind power plant control for connection to Diode Rectifier HVDC stations (current referenced and voltage referenced strategies)
- Efficiency and fault behaviour of DR-HVDC connected wind power plants
- Wind power plant connection to multi-terminal and meshed HVDC grids using Diode Rectifier HVDC stations
- Black start operation, fault-ride-through and ancillary services.

 

Tutorial speaker 4:

Topic: Applying Circuit Theory Seriously: From Ohm's Law and Duality to the Latest LED Driving and IPT Technologies

Prof. C.K. Michael Tse

Hong Kong Polytechnic University, Hong Kong

Brief biography

C. K. Michael Tse graduated from the University of Melbourne, Australia, with BEng (First Class Honors) and PhD degrees in 1988 and 1991, respectively, both in electrical engineering. He is presently Chair Professor at Hong Kong Polytechnic University, with which he served as Head of the Department of Electronic and Information Engineering from 2005 to 2012. He is author/coauthor of 7 books, 15 book chapters and over 500 papers in research journals and international conference proceedings, and holds 5 US patents. He was awarded a number of research and industry awards, including Best Paper Award by IEEE Transactions on Power Electronics 2001, Best Paper Award by International Journal of Circuit Theory and Applications in 2003, two Gold Medals at the International Inventions Exhibition in Geneva in 2009 and 2013, and a number of recognitions by the academic and research communities, including honorary professorship by several Chinese and Australian universities, IEEE Distinguished Lectureship, Distinguished Research Fellowship by the University of Calgary, Gledden Fellowship and International Distinguished Professorship-at-Large by the University of Western Australia.

Prof. Tse serves and has served as Editor-in-Chief for IEEE Circuits and Systems Magazine, Editor-in-Chief for IEEE Circuits and Systems Newsletter, Associate Editor for two IEEE Transactions, Editor for Int J Circuit Theory and Applications, and is on the editorial boards of a few other journals. Back home, he serves as panel member of Hong Kong Research Council and NSFC, and member of several professional and government committees. Prof. Tse is a Fellow of IEEE and a Fellow of IE Australia.
Abstract

 Much of the power electronics discipline has been built upon the application of circuit theory. However, in the process of developing solutions for new applications, the proper use of circuit theory has not always been borne in mind, leading to unnecessary repetition and reinvention of concepts that would otherwise be reached directly if the approach taken had thoroughly considered the existing knowledge in circuits and systems. In this tutorial, the role of circuit theory will be revisited and examples will be shown to illustrate how proper application of existing circuit theory would conveniently lead to important observations and conclusions that would save re-investigation or expedite understanding of the problems. Specific applications of current interest to be tentatively covered in this short tutorial include LED driving, power factor correction, parallel-connected converters, inductive power transfer, etc. In each application, the basic circuit theory relevant to analysis and design of the system in question will be expounded and its proper use will be shown to be crucial in gaining significant improvement in understanding the key properties and systematic generation of design solutions. It will be shown that even the basic principles of circuit duality and Kirchhoff’s laws are not always appropriately exploited in power electronics, let alone proper application of these principles that would lead to systematic design approaches for LED driving and interconnection of power converters. Furthermore, consideration of effect of parameter changes in conventional resonant circuits would be discussed, and its applications leading to systematic understanding of the design problems and classification of solution approaches inductive power transfer circuits will be briefly illustrated.

 

Tutorial speaker 5:

Topic: Battery Management Systems for Electric Drive Vehicles and Grid Storage

Prof. Chris Mi

San Diego State University, California, USA

Brief biography

  Chris Mi is a fellow of IEEE, Professor and Chair of the Department of Electrical and Computer Engineering, and the Director of the US DOE funded GATE Center for Electric Drive Transportation at San Diego State University, San Diego, California, USA. He was previously a professor at the University of Michigan, Dearborn from 2001 to 2015. He received the B.S. and M.S. degrees from Northwestern Polytechnical University, Xi’an, China, and the Ph.D. degree from the University of Toronto, Toronto, Canada, all in electrical engineering.  Previously he was an Electrical Engineer with General Electric Canada Inc. He was the President and the Chief Technical Officer of 1Power Solutions, Inc. from 2008 to 2011. He is the Co-Founder of Gannon Motors and Controls LLC and Mia Motors, Inc.
      His research interests are in electric and hybrid vehicles. He has taught tutorials and seminars on the subject of HEVs/PHEVs for the Society of Automotive Engineers (SAE), the IEEE, workshops sponsored by the National Science Foundation (NSF), and the National Society of Professional Engineers. He has delivered courses to major automotive OEMs and suppliers, including GM, Ford, Chrysler, Honda, Hyundai, Tyco Electronics, A&D Technology, Johnson Controls, Quantum Technology, Delphi, and the European Ph.D School. He has offered tutorials in many countries, including the U.S., China, Korea, Singapore, Italy, France, and Mexico. He has published more than 100 articles and delivered 30 invited talks and keynote speeches. He has also served as a panelist in major IEEE and SAE conferences.
      Dr. Mi is the recipient of “Distinguished Teaching Award” and “Distinguished Research Award” of University of Michigan Dearborn. He is a recipient of the 2007 IEEE Region 4 “Outstanding Engineer Award,” “IEEE Southeastern Michigan Section Outstanding Professional Award.” and the “SAE Environmental Excellence in Transportation (E2T) Award.” He was also a recipient of the National Innovation Award and the Government Special Allowance Award from the China Central Government. In December 2007, he became a Member of Eta Kappa Nu, which is the Electrical and Computer Engineering Honor Society, for being “a leader in education and an example of good moral character.”
  Dr. Mi was the Chair (2008-2009) and Vice Chair (2006-2007) of the IEEE Southeastern Michigan Section. Dr. Mi was the general Chair of the 5th IEEE Vehicle Power and Propulsion Conference held in Dearborn, Michigan, USA in September 6-11, 2009. Dr. Mi is one of the three Area Editors of the Editor of IEEE Transactions on Vehicular Technology, associate editor of IEEE Transactions on Power Electronics, Associate Editor of IEEE Transactions on Industry Applications. He served on the review panel for the NSF, the U.S. Department of Energy (2007–2010), the Natural Sciences and Engineering Research Council of Canada (2010), Hong Kong Research Grants Council, French Centre National de la Recherche Scientifique, Agency for Innovation by Science and Technology in Flanders (Belgium), and the Danish Research Council. He is the topic chair for the 2011 IEEE International Future Energy Challenge, and the General Chair for the 2013 IEEE International Future Energy Challenge. Dr. Chris Mi is a Distinguished Lecturer (DL) of the IEEE Vehicular Technology Society.

  He is also the General Co-Chair of IEEE Workshop on Wireless Power Transfer sponsored by six IEEE Societies (PELS, IAS, IES, VTS, MAG, and PES), Guest Editor-in-Chief of IEEE Journal of Emerging and Selected Topics in Power Electronics - Special Issue on WPT, Guest Co-Editor-in-Chief of IEEE Transactions on Power Electronics Special Issue on WPT, Guest Editor of IEEE Transactions on Industrial Electronics - Special Issue on dynamic wireless power transfer, and steering committee member of the IEEE Transportation Electrification Conference (ITEC- Asian). He is the program chair for the 2014 IEEE International Electric Vehicle Conference (IEVC) in Florence Italy December 17-19, 2014. He is also the chair for the IEEE Future Direction’s Transportation Electrification Initiative (TEI) e-Learning Committee and developed an e-learning module on wireless power transfer.

Abstract

Electric vehicles (EV) and plug-in hybrid electric vehicles (PHEV) have attracted worldwide attentions because their capabilities to displace petroleum usage and improve energy and environment sustainability. One of the key constraints for mass market penetration of EV and PHEV is the high cost of the battery system as well as the safety and reliability concerns of the battery system. Battery management systems deal with these issues effectively to ensure safe and reliable operation of the battery system, extend the life of battery, and maximize the drive range. On the other hand, power electronics are widely used in EV and PHEV battery systems, such as battery charger, battery control units (DC-DC converter), battery cell balancing circuits, and battery protection circuits. These power electronics units must address the unique characteristics of different batteries and assure safe operation of the battery system, and effectively work with the battery management system (BMS). Proper design of the BMS and associated micro and power electronic circuits can help optimize the system efficiency and reduce cost while extend the life expectance and increase safety of the battery system.


This course covers four main topics: (1). Energy storage system basics for power electronic engineers with focus on lithium ion batteries; (2). Battery management systems; (3). The application of power electronics in the battery system of an EV and PHEV, including on board and off board battery charger, DC-DC converter, battery monitoring, control, balancing, and protection circuits. (4). Battery safety basics. (5) Battery modeling and parameter identification; (6) battery diagnostics and prognostics. (7). Wireless charging of electric vehicle. The seminar will focus on the unique aspects of these power electronic circuits in EV and PHEV applications. Conductive, inductive, and wireless chargers will be discussed. Vehicle to grid (V2G) concepts and grid energy storage will be briefly introduced.

Objective: the objective is to provide power electronics engineers and students the knowledge they need to work in the area of batteries in electric drive vehicles and grid storage.

 

Tutorial speaker 6:

Topic: Droop Control for Paralleled Source Converters in Standalone Power System

Prof. Jinjun Liu

Xi’an Jiaotong University, China

Brief biography

  Jinjun LIU received his B.S. and Ph.D. degrees in Electrical Engineering from Xi’an Jiaotong University (XJTU), China in 1992 and 1997 respectively.  He then joined the XJTU Electrical Engineering School as a faculty.  In 1997, 1999, and 2010 respectively he participated in technology, professional, and management training programs at Advanced Technology Laboratories Inc. in USA, Milwaukee School of Engineering in USA, and Chinese University of Hong Kong.  From late 1999 until early 2002, he was with the Center for Power Electronics Systems at Virginia Polytechnic Institute and State University, USA, as a visiting Scholar.  In late 2002 he was promoted to a Full Professor and then the head of the Power Electronics and Renewable Energy Center at XJTU, which now comprises 12 faculty members and 120 graduate students and carries one of the leading power electronics programs in China.  He served as an Associate Dean of Electrical Engineering School at XJTU from 2005 to early 2010, and the Dean for Undergraduate Education of XJTU from 2009 to early 2015.  He currently holds the position of XJTU Distinguished Professor of Power Electronics, sponsored by Chang Jiang Scholars Program of Chinese Ministry of Education. 

   Dr. LIU coauthored 3 books, published over 100 technical papers, holds 25 patents, and received several governmental awards at national level or provincial level for scientific or career achievements, the 2006 Delta Scholar Award, and the 2014 Honor of Excellent SciTech Worker of the Nation.  His research interests are power quality control and utility applications of power electronics, and micro-grids for sustainable energy and distributed generation.

  Dr. Liu has served as the IEEE Power Electronics Society (PELS) Region 10 Liaison and then China Liaison for 8 years, an Associate Editor for the IEEE Transactions on Power Electronics for 8 years.   Starting from 2015 he has been the Vice President membership for PELS.  He chaired the Asian Power Electronics Conferences Coordinating Committee from June 2012 to May 2014.  He is on Board of China Electrotechnical Society and a Vice President of the CES Power Electronics Society.  He is also on the Executive Board and a Vice President for the China Power Supply Society.
Abstract

This tutorial is meant to help a power electronics engineer/student understand the basic operation principles and recent advancements of the coordinating control for paralleled source converters in standalone power system.  The primary objective of the coordinating control is to ensure the system voltage to be within a nominal magnitude/frequency range while at the same time with appropriate power distribution among all these energy sources.  Although this can be realized with the help of wire or wireless communications among source converters, it is still very often required to implement the coordinating control without any communications for the sake of higher reliability and plug-and-play performance.  There are two types of communication-less coordinating control, i.e. master-slave control and droop control.  The focus of this tutorial will be the droop control, which is more widely used.  The basic operation principles of droop control will be introduced in DC bus power system, with detailed illustration on the simplest system structure of 2 paralleled source converters and one common load.  These principles will then be extended to AC bus power system, where droop control has to be implemented in two channels: the active power channel and the reactive power channel.  The three major technical issues that need to be dealt with in droop control will then be identified, including the compromise between power sharing and voltage regulation, the uneven power sharing caused by the deviation among equivalent line impedances, and the coupling between the two channels for AC bus system.  All different methods and techniques to handle these issues will be addressed and elaborated.  The most recent research and development results achieved at Xi’an Jiaotong University will be introduced in the end.

 

Tutorial speaker 7:

Topic: Effective Design of EMI Filters in Power Electronics Products

Prof. Toshihisa Shimizu

Tokyo Metropolitan University, Tokyo, Japan

Brief biography

Prof. Toshihisa Shimizu graduated from Tokyo Metropolitan University, Tokyo, Japan, and  received his B.E., M.E. and Dr.Eng. degrees all in electrical engineering from the same university in 1978, 1980, and 1991, respectively. In 1998, he has been a visiting professor at VPEC, Virginia Polytechnic Institute and State University, Virginia, USA.
In 1980, he joined Fuji Electric Corporate Research and Development Ltd, as a research engineer. Since 1993, he joined Tokyo Metropolitan University, Department of Electrical Engineering, as an associate Professor, and now a full professor in the same university. He has been served as vice faculty dean of school of Engineering and Science in Tokyo Metropolitan University from 2009 to 2013, and has been served as department head of Electrical Engineering in the same university. He is currently serving as a visiting researcher of Advanced Institute of Science and Technology in Japan, a technical advisor of intellectual property high-court of Japan, and a chairman of grant committee in Tokyo Metropolitan Small and Medium Enterprise Support Center.
His research interests include high power density converters, characterization of the magnetic materials applied to power converters, high frequency inverters, photovoltaic power generations, EMI filter design in power converters, etc. He published more than 90 journal papers, 400 regional and international conference proceedings, and 5 technical books. He also holds more than 30 patents and 50 patent pending. He honored several national research grants, and has been conducted research projects with more than 30 industrial companies which include Honda Motors, Toyota Motors, Denso, Fuji Electric, Iwatsu Coorporation, LG Electronics, Hitachi Marerials, Mitsubishi Materials, Toho Zinc, etc.
Dr. Shimizu is a recipient of the Transactions Paper Awards from IEE Japan in 1999, and 2010, two first prize paper awards from IPEC2010 ECCE-Asia, and first prize paper award from EPE-PEMC2010, and first prise paper award from IPEC2014 ECCE-Asia. He was honored more than 10 awards including outstanding achievement award and special activity award, and awarded 5 awards from IEEE Power Electronics Society and industrial organizations in Japan.

Dr. Shimizu has been actively involved with IEEE PELS, serving as an Associate Editor of the IEEE Transactions, IEEE PELS Japan Chapter Chairperson, a member of PELS Technical Committee, a Chair of ECCE Asia Coordinating Committee, and also served as a Member at Large of IEEE PELS. He is also serving as an Asian Liaison of IEEE IAS Industrial Power Converter Committee. He has been served as a President, Vice President, International Chair, board member of IEEJ IAS society, and now serving as a Vice President of Standardization Committee of IEEJ headquarter. He is also serving as a Regional Chief Member in Japan for IEC CISPR-B Committee. He has been served as a Technical Program Chair of IPEC2005, General Chair of IPEC2014 ECCE-Asia, and Technical and Organizing Committee Member of numerous IEEE International and Regional Conferences. Prof. Shimizu is a Fellow Member of IEEJ and Senior Member of IEEE.
Abstract

Power converters that are used in various products (Industrial applications, home appliances, electric cars, etc.) are required to provide higher specifications such as a high power density, high efficiency, and low cost. High-frequency switching with advanced power devices, such as SiC and GaN, is one effective method used to satisfy the above requirements. On the other hand, electromagnetic interference (EMI) noise emitted from the power converter tends to increase due to a high-frequency switching operation accompanied by high dv/dt or di/dt transients of the SiC and GaN devices. In order to meet EMI regulations, such as CISPR22 and IEC61000, we need to use EMI filters at the AC port or DC port of the power converters. However, it is not easy to optimize the EMI filter design because the inherent EMI noise generated by the power converters cannot be evaluated in advance of the EMI filter design. Hence, a reiterative design process based on trial and error has to be implemented during the design stage. As a consequence, some problems result such as long-duration design and test processes, which increase cost.
In order to eliminate the vague process and to achieve an optimum EMI filter design, knowledge of accurate calculation methods for the conducted EMI noise would be essential.
In this tutorial, basic knowledge of the conducted EMI noise in power electronics systems will be lectured, and state of art technology for mitigating the conducted EMI noise will be discussed.
This tutorial consists of the following five content.
(1) Introduction of conducted EMI regulation.
(2) basic theory of conducted EMI in power electronics systems
(3) some practical calculation methods of conducted EMI noise
(4) design procedure of the conducted EMI filter
(5) related topics