Design of the magnetic components: key aspects, approach, and practice.

Instructor Team :

Rafal Wojda, Oak Ridge National Laboratory,

Vandana Rallabandi, Oak Ridge National Laboratory,

Marcio Magri Kimpara, Oak Ridge National Laboratory,

Abstract :

This tutorial is oriented on designing of high-frequency power inductors and transformers. It is intended for graduate-level students that seeks the know-how and best practices to design high efficiency converters with efficient and reliable magnetic components. The tutorial is divided into three parts:

  • Theory part, which includes: magnetic materials applications, winding types applications, and insulation coordination,
  • Design part, where three magnetic component designs will be covered, including medium-frequency and high-power inductor, medium-frequency and high-power transformer, and low-frequency medium-voltage transformer,
  • Simulation part, where components designed in Part II will be simulated using finite element method utilizing ANSYS Maxwell 3D/2D simulator.

The simulation models, as well as design procedures, will be provided for participants use.

Duration of Tutorial

3 hours

Tutorial Outline

The first, theoretical part of the tutorial will be led by dr. Rafal P. Wojda from Oak Ridge National Laboratory.  This part will consists of:

The second, designing part of the tutorial will be led by dr. Vandana Rallabandi from Oak Ridge National Laboratory will consider three designs: Power Inductor, HF Transformer, and  MV Transformer.

The third, simulation part of the tutorial will be led by dr. Marcio Magri Kimpara and will utilize FEM software for the validation of the designed components. Magnetostatic, frequency, and transient analysis will be utilized in order to validate the design part.  Models for the simulations as well as trial licenses will be provided to the participants.


Tutorial format and Required Material :

– Projector

– Board

– ANSYS Maxwell and Maxwell Icepak license for participants,

– Standard Matlab license,

– It is assumed that participants will be working on their personal computers (laptops), and the supporting software (which will be provided after successful registration to the tutorial) must be installed and working.

Instructor Biography:

Rafal P. Wojda (Senior Member, IEEE)  received the B.S. and M.S. degrees in electronics engineering from the Institute of Radioelectronics and Multimedia Technology, Warsaw University of Technology, Warsaw, Poland, in 2007 and 2009, and the Ph.D. degree in electronics, microwave, VLSI, and nanotechnology from the Department of Electrical Engineering, Wright State University (WSU), Dayton, OH, USA, in 2012. During 2009–2010, he was a Fulbright Scholar at WSU. Since 2012, he has been a Senior Scientist with ABB Corporate Research Center in Poland, where he has been focusing on magnetic components optimization for renewable, EV, power protection, and rail. Since 2018 he has been a Research Staff at Oak Ridge National Laboratory, where he focuses on advanced power flow magnetic components for low and medium voltage high frequency applications.

Vandana Rallabandi (Senior Member, IEEE) received the master’s and Ph.D. degrees from the Indian Institute of Technology Bombay, Mumbai, India. She was a Lead Engineer with GE Research, Niskayuna, NY, USA. She was a Postdoctoral Researcher with the SPARK Lab, University of Kentucky, Lexington, KY, USA, and a Research Engineer with the GE Research Center, Bangalore, India. Since 2022, she is with the Oak Ridge National Laboratory. She has authored more than 40 journal and conference proceedings papers, including three that received awards from IEEE, IET, and ICRERA, respectively, coauthored four book chapters. Her research interests include electric machines, power electronics drives, renewable energy devices and systems, energy storage, and power systems.

Marcio L. M. Kimpara (Member, IEEE) was born in Jales, Brazil, in May 1986. He received the B.S. and M.S. degrees in electrical engineering from the Federal University of Mato Grosso do Sul (UFMS), Campo Grande, Brazil, in 2009 and 2012, respectively, and the Ph.D. degree from the Federal University of Itajubá, Itajubá, Brazil, in 2018. He was a Professor with the Department of Electric Engineering, UFMS. Since 2022 he is with Oak Ridge National Laboratory. His research interests include power electronics, renewable energy, and electric machines and drives.