Tutorial Speakers

Tutorial #1

Toshihisa Shimizu

Tokyo Metropolitan University, Tokyo, Japan

Passive components for advancement of Power Electronics

Power converters those are used in various products (Industrial applications, home appliances, electric cars, etc.) are desired to achieve higher performances in terms of power density, efficiency, cost, and reliability, etc. High-frequency switching with utilizing advanced power devices, such as SiC and GaN, is one effective method to satisfy the above requirements. On the other hand, it becomes clear that reduction of the volume of passive components are becoming hard even when high frequency switching is applied. In addition, loss generated from the passive component cannot be reduced as we expected and results in the over heat problems in the practical applications. In order to solve the problems, accurate loss calculation and loss measurement of the pessive component used in the power electronics circuit is crucial.

This presentation consists of the following contents.

  • Trens on Power Converter Technology
  • Chacterization of Magnetic Components
  • Accurate Loss Masurement of Magnetic Materials
  • Loss Calculation Using Loss Map Method
  • Loss Measurement of High Power Inductors
  • Loss Measuring Method of Power Capacitors
  • Loss Characteristics of Typical Power Capacitors
  • Loss Calculation Using Capacitor Loss Map
  • Future Works















Toshihisa Shimizu was born in Tokyo, Japan, in 1955. He received the B.E., M.E. and Dr.Eng. degrees all in electrical engineering from Tokyo Metropolitan University in 1978, 1980, and 1991, respectively. He has been a visiting professor at VPEC, Virginia Polytechnic Institute and State University, Virginia, USA, in 1998.
In 1980, he joined Fuji Electric Corporate Research and Development, Ltd. as a research engineer. Since 1993, he has been with Department of Electrical Engineering, Tokyo Metropolitan University, Tokyo, Japan. Now he is a full professor and vice-president in the same university. His research interests includes, high frequency inverters, photovoltaic power converters, partial shade problems in photovoltaic modules, modeling and reduction of EMI in Power Electronics, high power density converter design, passive component design including loss analysis of inductors and capacitors, etc. He published more than 150 journal papers and 300 international conference proceedings, and 7 technical books. He also holds more than 100 patents and more than 50 patents pending.
Dr. Shimizu has received transactions paper awards from IEEJ in 1999, 2010 and 2016, two first prise paper awards at IPEC2010 -ECCE Asia-, best paper award at EPE-PEMC2010, first prise paper award at IPEC2014 ECCE-Asia, first prise paper awards at IEEE ECCE2015, ECCE2016, ECCE2017, and second prize paper award at ICPE2019 ECCE-Asia.
He is a fellow member of IEEE, and a fellow member of the Institute of Electrical Engineers of Japan.

Tutorial Speakers

T1: Toshihisa Shimizu; “Passive components for advancement of Power Electronics”

T2: Christian Frank Flytkjær and Łukasz Hubert Kocewiak; “Transmission level harmonics and converter stability in modern power systems”

T3:David J. Perreault,Alex J. Hanson, and Charles R. Sullivan; “Modeling and Analysis of Magnetic Components”