Perseverance and Dedication are Secrets to Success
Congratulations to Dr. Sayed Abbas Arshadi for defending his PhD thesis successfully!
Last week, Abbas defended his thesis on “Three-Phase DC-DC Resonant Converters for High-Power Battery Charging Applications”, achieving this significant milestone in his career.
Abbas' Achievements
- 3 IEEE transactions journal and 1 IEEE ECCE international conference publication
- A transactions publication selected as a highlighted paper in IEEE Trans. Power Electron (March 2019 issue)
- Industrial collaborations with Delta-Q technologies on resonant converters for high-power battery charging
Awards and Fellowships
- Four Year Doctoral Fellowship (awarded to UBC’s best PhD students)
- Graduate Support Initiative Award (awarded to graduate and postdoctoral students of UBC)
We are grateful for all his contributions to the success of #martinordonezlab throughout the years, and we wish him success in all his future endeavors.
Acknowledgments
We would also like to thank:
- Supervisory Committee: Martin Ordonez, Wilson Eberle, and Deepak Gautam
- Examiner Committee: Alireza Nojeh and Mauricio Ponga de la Torre
- External Examiner: Olivier Trescases
Abstract of Sayed Abbas Arshadi’s PhD Thesis
Title: Three-Phase DC-DC Resonant Converters for High-Power Battery Charging Applications
Abstract:
Battery chargers are the power processing stage between energy sources and batteries. To meet modern technological requirements, higher efficiency, higher power density, and enhanced reliability are expected from these power converters.
This research aims to increase the efficiency of power converters in high-power Electric Vehicle (EV) battery charging applications. Compact size, high efficiency, and high reliability are critical requirements for these chargers. The work focuses on adopting three-phase DC-DC resonant configurations for battery charging converters.
A thorough analysis of three-phase LLC resonant converters was conducted to understand the converter's current-sharing behavior. A current-sharing technique was proposed to improve performance. Additionally, a new modulation technique was introduced to support wide voltage regulation required for battery charging applications. This technique also enhances converter efficiency during light-load operations (e.g., when the batteries are nearly fully charged).
In another part of the study, three-phase CLLC resonant converters were analyzed for bi-directional battery charging applications. The proposed current-sharing technique was tested, and its effectiveness was verified.