Bio
Rafal P. Wojda, IEEE SM received his B.S. and M.S. degrees in Electronics Engineering from the Institute of Radioelectronics and Multimedia Technology at Warsaw University of Technology, Poland, in 2007 and 2009. He earned his Ph.D. in Electronics, specializing in microwave engineering, VLSI, and nanotechnology, from Wright State University, Dayton, Ohio, in 2012, where he was a Fulbright Scholar from 2009 to 2010.
From 2012 to 2018, Dr. Wojda was a Senior Scientist at ABB Corporate Research Center, focusing on the development and optimization of magnetic components for power conversion applications. Since 2018, he has been with Oak Ridge National Laboratory, where his research focuses on advanced magnetic technologies for power flow control and energy-efficient hardware for exascale high-performance computing systems.
Dr. Wojda has authored numerous peer-reviewed journal articles. His research interests include:
- High-frequency and medium-voltage magnetic components
- Loss optimization and insulation coordination in magnetic devices
- Advanced magnetic technologies for solid-state transformers
- Thermal management
- Wireless power transfer systems
- Energy-efficient hardware for exascale high-performance computing
- Partial discharge phenomena and insulation coordinartion in medium-voltage magnetic systems
Professional Experience
Research and Development Staff Scientist
Oak Ridge National Laboratory, Knoxville, TN | Sept. 2018 – Present
- Lead research initiatives in advanced magnetic device technologies.
- Mentor postdoctoral researchers and oversee laboratory setup and resource management.
- Engage in outreach and collaboration with academia and national laboratories.
- Focus areas include high-frequency magnetics for power flow control and energy-efficient hardware for exascale HPC systems.
Senior Scientist
ABB Corporate Research Center, Krakow, Poland | Oct. 2012 – July 2018
- Specialized in the development and optimization of magnetic components for power conversion applications.
- Contributed to innovation efforts leading to several granted and pending patents.
Awards
- IEEE Senior Member 2020
- IET Power Electronics Premium Award for Best Paper, 2014
- U.S. Department of State Exchange Program Alumni, 2012
- Polish-U.S. Fulbright Commission Award, 2009
Professional Service
IEEE East Tennessee PELS/PES Joint Chapter Chair, 2022-present
IEEE East Tennessee PELS/PES Joint Chapter Secretary, 2018-2022
Publications
Other Publications
- R. P. Wojda and M. K. Kazimierczuk, "Winding resistance of litz-wire and multi-strand inductors," IET Power Electronics, vol. 5, no. 2, 2012
- R. P. Wojda and M. K. Kazimierczuk, "Analytical optimization of solid-round-wire windings," IEEE Transactions on Industrial Electronics, vol. 60, no. 3, 2013
- R. P. Wojda and M. K. Kazimierczuk, "Winding resistance and power loss of inductors with litz and solid-round wires," IEEE Transactions on Industry Applications, vol. 54, no. 4, 2018
- R. P. Wojda and M. K. Kazimierczuk, "Analytical winding size optimisation for different conductor shapes using Ampère's Law," IET Power Electronics, vol. 6, no. 6, 2013
- R. P. Wojda and M. K. Kazimierczuk, "Magnetic field distribution and analytical optimization of foil windings conducting sinusoidal current," IEEE Magnetics Letters, vol. 4, 2013
- R. P. Wojda and M. K. Kazimierczuk, "Optimum foil thickness of inductors conducting DC and non-sinusoidal periodic currents," IET Power Electronics, vol. 5, no. 6, 2012
- R. P. Wojda and M. K. Kazimierczuk, "Analytical winding foil thickness optimisation of inductors conducting harmonic currents," IET Power Electronics, vol. 6, no. 5, 2013
- R. P. Wojda and M. K. Kazimierczuk, "Proximity‐effect winding loss in different conductors using magnetic field averaging," COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 6, no. 5, 2012