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Upcoming events

Distinguished Lecturer

By Hirofumi Akagi

Title                                             : New Trends in Power Electronics for High-Power Applications
Speaker                                      : Prof. Hirofumi Akagi, Tokyo Institute of Technology, Tokyo, Japan
Date and time                             : Monday 15th December, 15:00 - 17:00
Venue                                          : KTH Royal Institute of Technology, Stockholm, Lecture Room M33
This talk lays emphasis on an overview of circuit configurations, controls and applications of the family of modular multilevel cascade converters for grid connections and electric-motor drives. It also presents experimental results obtained from a few different downscaled systems that were designed, constructed and tested in the speaker's laboratory. Moreover, this talk describes a 750-V, 100-kW, 20-kHz bidirectional isolated dc-dc dual-active-bride (DAB) converter with focus on conversion efficiency and power-loss breakdown. The dc-dc converter consists of four 1.2-kV, 400-A SiC-MOSFET/SBD dual modules and magnetic devices including a 20-kHz transformer with a nano-crystalline soft-magnetic material. The SiC dual (two-in-one) module used in this experiment is the same in appearance, that is, size, shape, and terminal/pin arrangement as the latest 1.2-kV, 300-A Si-IGBT dual module.
Hirofumi Akagi Biography:
Hirofumi Akagi, professor and vice dean of the school of engineering at the Tokyo Institute of Technology, is a leading researcher in power conversion systems and their application to industry, utility and transportation. He has pioneered the theory of instantaneous reactive power in three-phase circuits, referred to as the “p-q theory,” which has been applied to power conversion systems and active filters for power conditioning. In addition, Dr. Akagi invented hybrid active-passive filters, the system concept and operating principle of which have been applied to the hybrid active-passive filter used in the Yamanashi test line for Japan's super high-speed, magnetically levitated train system. An IEEE Fellow, Dr. Akagi holds nine patents – with five more pending, and has authored or co-authored more than 70 IEEE Transactions/Journals. Dr. Akagi has received four IEEE Transactions Prize Paper Awards, the IEEE William E. Newell Power Electronics Award and the IEEE Industry Applications Society Outstanding Achievement Award.

We want you to be our guest at ABB PhD days 2012

Technology plays a key role for ABB. We have seven research centers, 1 000 scientists and hundreds of university collaborations across the world. We are working to develop unique technologies that improve our clients' performance while lowering environmental impact.

ABB AB wants to meet you and your fellow PhD students from a selection of universities. We want to discuss our exciting and world leading technology and we would like to give you the opportunity to get in contact with other selected PhD students and with ABB employees with extensive experience in various technology areas. These discussions can be a catalyst for new collaborations and projects!

The visit takes place on October 4-5 in Västerås

The agenda will be filled with exciting lectures on R&D within ABB and factory visits.

Here are some highlights
· Energy Storage
· Energy Efficiency
· Active House demo
· HR perspective

Call for posters
ABB AB and IEEE PE/PEL Sweden Chapter invites PhD students working in the field of electric power systems, power electronics and machinesto participate in a poster contest in conjunction with the visit. This is a great opportunity for you to showcase your research in front of an engaged and connected community of electric power engineering professionals. Please follow guidelines in the attached document.

Cost of travel and accommodation is on the participant. Meals are free.
Please indicate your choice of hotel in the registration.

Ta inn Hotel
Single room 595 sek
Double room 995 sek

Elite Stadshotellet
Single room 870 sek

For logistic reasons we have a limit of 60 participants.
Registration latest by September 3 by writing to

You will receive a confirmation email with all practical details three weeks before the event.

Contact person:

Casual clothes during the visit.

Best Regards,
Lennart Harnefors, Helena Malmqvist, Joakim Forsberg and Eva Stenqvist at ABB AB

HOTSIC - High temperature power electronic systems with SIC integrated circuits

Date and time: 24 April, 15:15, Teknikringen 33, lecture room H1
Venue: KTH Royal Institute of technology, Stockholm, Sweden
Speaker: Carl-Mikael Zetterling, KTH

SiC devices are already finding many application areas as more and more suppliers are bringing products on the market. Most of these products are aimed at high voltage applications, thanks to the high critical field for breakdown compared to silicon. This leads to much lower on-resistance for high voltage devices compared to silicon, but at a higher price that has to be offset by system gains. However, it is not straightforward to exploit this advantage, which is clear from the many different device types that are presently being commercialized. Lately several efforts have been started worldwide on high temperature SiC integrated circuits, exploiting the much higher intrinsic temperature of SiC compared to SOI. This could potentially lead to completely new applications in less cost-sensitive market areas. An overview and comparison will be made of SiC IC research technologies. Technological demands on material growth will also be included.
Project website:

Carl-Mikael Zetterling received the M.Sc. degree in electrical engineering and the Ph.D. degree from the Royal Institute of Technology (KTH), Stockholm, in 1991 and 1997, respectively. In 1998, he joined the Faculty of the School of Electrical Engineering, KTH, as assistant professor. Since 2005 he is a full Professor and a research area director for integrated devices and circuits. From 1995 to 1996, he was an Invited Scholar at the Center for Integrated Systems (CIS), Stanford University, Stanford, CA. In 1998, he spent 3 months as an Invited Professor at Kyoto University, Kyoto, Japan, and another two months in 2001 at Kyoto Institute of Technology. His research interests include process technology and device design of high-frequency and high-power devices in wide-bandgap materials, particularly SiC. He has almost 20 years experience of SiC device research. His recent work has expanded to high-temperature analog and digital integrated circuits in SiC. He is the author of more than 180 publications (h-index 18), including editing and writing the book “Process Technology for Silicon Carbide Devices” (The Institution of Engineering and Technology, 2002). He has also co-authored the book “Guiding students away from plagiarism” with Jude Carroll (KTH, 2009). Prof. Zetterling has served on the Technical Program Committee for the TMS Electronic Materials Conference and the IEEE Semiconductor Interface Specialists Conference. He was the Chairman of one of the research review panels of the Swedish Research Council (VR NT-L) during 2008-2010. He is a senior member of IEEE.

Carl-Mikael Zetterling


Lina Bertling - nominated as Treasurer of IEEE Power & Energy Society 2012/2013

Candidate statement:
The IEEE Power & Energy Society plays a leading role in global development of sustainable energy systems. Technological developments such as those conceptualized as the Smart Grid are crucial. The real difference, however, is made by the people. It is the energy in our network of people that creates miracles. I have found IEEE and PES to be a source of energy in my life. For the past thirteen years I have been actively involved in PES, serving on technical committees, editorial boards, leading the Swedish Chapter and organizing international conferences. As PES membership continues to grow at record paces, it becomes ever more crucial that we use our resources wisely. We must balance this growth with programs that are fiscally sustainable in the long run. As Treasurer of PES I would ensure that PES resources are used to maximize the benefit to our members. As a member of the Governing Board, I would work to strengthen PES outside of North America. I would serve PES with joy and pleasure, and I hope to have support from you! Thanks Lina.


Lina Bertling (S´98, M´02, SM´08). She holds the Chair of Professor in Sustainable Electric Power Systems and is the Head of the Division of Electric Power Engineering, at the Department of Energy and Environment, at Chalmers University of Technology, in Gothenburg, Sweden, since January 2009. She has been with Svenska Kraftnät, i.e. the Swedish Transmission Systems Operator, during 2007-2009, and as a manager of the Research and Development from 2008. She has been with the Royal Institute of Technology (KTH), School of Electrical Engineering, in Stockholm, during 1997-2009, where she became Associate Professor in 2008, and finalized her Ph.D. in 2002 on reliability-centered maintenance for electric power distribution systems. She has been visiting researcher at the University of Saskatchewan during the spring semester 2000, and a postdoctoral fellow at the University of Toronto, and associated with Kinectrics Inc. during 2002/2003. Her research interests include the evolution of the electric power systems into Smart Grid and the application of probabilistic methods for reliability analysis and maintenance management. Dr. Bertling is the Chair of the Swedish PE/PEL Chapter, and the Vice Chair of the IEEE PES Subcommittee on Risk, Reliability and Probability Applications (RRPA). She is a member of the Editorial board of the IEEE Transactions on Smart Grids. She was General Chair of the first IEEE PES Innovative Smart Grid Technologies (ISGT) Europe Conference, in Gothenburg, 2010. She has been a member of the IEEE Sweden Section board during 2005-2007. She is a member of the Swedish National Committee of Ciréd and the World Energy Council, and a member of Cigré. She is a member of the Scientific Board of the Swedish Civil Contingencies Agency (MSB) and a Board member of the Swedish Wind Power Center hosted by Chalmers University of Technology.
Contact information:
Professor Lina Bertling, Chalmers University of Technology, 412 96 Gothenburg, Sweden
Phone: +46 31 772 1648, Fax: +46 31 772 1633, Email:
Web: ,,

Power System Protection and Modern IEDs

An IEEE PE/PEL Sweden Chapter Seminar to be hosted by ABB.

Venue: ABB Corporate Research Nätverksgatan 3, Building 391, 72136 Västerås

Date and Time: April 15, 2011 from 10AM to 12Noon.

For more information pls contact Hector Zelaya de la Parra or Jianping Wang (for their e-mail addresses and phone numbers see below)

Current Source Inverter with normally-on SiC JFETs: design and protection issues

Dr. Jacek Rabkowski from Warsaw University of Technology presents the conclusions from a finalized project on current source converters with normally-on SiC JFETs. Special attention will be given to design and protection aspects.

Time: Thu 2010-10-21, 13.00
Location: Seminar room, second floor, Teknikringen 33, KTH, Stockholm

Proudly we would like to announce and invite you to participate and submit papers to the first Conference on Innovative Smart Grid Technologies (ISGT) Europe! The conference is sponsored by the IEEE Power & Energy Society and hosted by Chalmers University of Technology, and will be held on October 11-13, 2010 in Gothenburg, Sweden. More information with Call for Papers, from the conference home page here

Important dates:

Full Paper Submission Deadline: May 31, 2010
Early Registration Deadline: August 31, 2010
Authors’ Notification: July 31, 2010
Conference Dates: October 11-13, 2010

The Conference scope includes the topics:

  • Standards for smart grid and grid codes
  • Regulatory aspects and market operations
  • Cyber and physical security systems and Information and Communication Technology
  • System and component reliability and diagnostics
  • Intelligent monitoring and outage management - self healing grids
  • AC and DC transmission- and distribution systems – planning, operation and security
  • Protection and phasor measurement unit applications
  • Grid integration of renewable energy sources
  • Use and control of power electronic controllers and energy storage
  • Grid solutions for plug-in vehicles and low-carbon transportations
  • Sensors, communication and advanced metering infrastructure
  • Energy management and efficiency and end user benefits

    Organizing Committees:

    IEEE PES ISGT Committee

    Alan Rotz, IEEE PES President
    Wanda Reder, Former IEEE PES President
    Pat Ryan, IEEE PES Executive Director
    Mohammad Shahidehpour,Chair IEEE PES ISGT 2010 USA
    Meliha Selak, IEEE Chapter Chair Coordinator
    Carlo Alberto Nucci, IEEE Chapter Chair Reg. 8

    Local Committee at Chalmers University of Technology

    Lina Bertling, Conference chair
    Stanislaw Gubanski, Conference vice chair
    Tuan Le, Program coordination
    Massimo Bongiorno, Paper review coordination
    Mats Rydehell, External Contacts
    Ann-Kristine Nordin, Media and communication


    Lina Bertling
    Conference Chair

    ** ** ** ** ** **

    Event on Risk and Vulnerability in Infrastructures in Lund 10-11 May

    Welcome to two days in Lund dedicated to risk and vulnerability in infrastructures! First an afternoon of presentations by professors from United Kingdom, Norway and Sweden in a seminar supported by IEEE Sweden PE/PEL Chapter. Next day Ph.D. candidate Jonas Johansson defends his thesis "Risk and Vulnerability Analysis of Interdependent Technical Infrastructures - Addressing Socio-Technical Systems".

    More details and information about registration is found here. There is no fee for the seminar.

    Most welcome!

    ** ** ** ** ** ** ** ** ** **

    IEEE Sweden Chapter PE/PEL - New Board

    On December 7, 2009 the first meeting has been held with the new board for the IEEE Sweden Chapter PE/PEL.

    Please see attached minutes here. A member meeting was held on 3 September 2009, following on that an election was held on officers for the board run by Gustaf Olsson. See attached results announced to the members here.

    The following positions have been appointed:

    Formal positions (elected by the members)

  • Chair: Lina Bertling,
  • Vice Chair, Hans Peter Nee
  • Treasurer Hector Zelaya de la Parra
  • Secretary Olof Samuelsson
  • Member Jianping Wang

    Additional positions

  • Webmaster Zhu Kun
  • Events Tuan Le

    Also see attached picture here. Persons from left: Olof, Hansi, Lina, Zhu, Hector, Jianping, Tuan

    Lina Bertling

    On Concept of a Wide Area Defence System for the Power Grid

    2009-09-03 15:00

    15-16: Guest lecturer Prof. Chen-Chin Liu University College Dublin. The purpose of a defence system is to help a power grid avoid a cascading sequence of events. Traditional N-1 security criterion does not assure that the system can withstand cascading outages. A wide area protection and control system with the capabilities to perform vulnerability assessment and determine the defence actions is needed. On line assessment should be based on vulnerable patterns of the power grid. Controlled islanding requires computational techniques to identify how the power grid will be partitioned. This seminar will provide simulation results with realistic test cases.

    16-17: Discussion about IEEE and its benefits and features and specifically ideas for the the IEEE Sweden PE/PEL Chapter (moderator Prof. Lina Bertling).

    Start: 2009-09-03 15:00

    End 2009-09-03 17:00

    Event location Department of Energy and Environment, Division of Electric Power Engineering, Hörsalsvägen 11, VD room

    Campus Johanneberg

    In view of revitalizing the Swedish PE/PES chapter, the Acting Chairman has scheduled a board meeting for early Septemeber. The intention is that a new chapter board will be elected in this meeting.

    Documentation from the first meeting held in 2009 can be found here.

  • Contact
    For more information about our chapter and our activities, please, send us an e-mail to
    Upcoming Chapter Events
    Chapter Board
    Chair: Lina Bertling, +46 31 772 1648
    Vice-chair: Hans Peter Nee , +46 8 790 7781
    Treasurer: Hector Zelaya de la Parra, +46 21 323275
    Secretary: Olof Samuelsson, +46 46 222 7504
    Member: Jianping Wang, +46 21 323298
    Webmaster: Zhu Kun , +46 8 790 6829
    Miscellaneous: Tuan Le, +46 31 772 3832

    Lina Bertling
    Upcoming Section Events
    Upcoming Other Events
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