- By:
- Su, Gui-Jia ; Rallabandi, Vandana P; Mohammad, Mostak ; Chowdhury, Md S; Onar, Omer C
- Page Number:
- 1-6
- Book Title:
- 2026 IEEE Transportation Electrification Conference & Expo (ITEC) & Electric Aircraft Technologies Symposium (EATS) (ITEC+EATS)
- Publication Date:
- September 16, 2026
- Publisher Location:
- IEEE, New Jersey, United States of America
- Conference Name:
- 2026 IEEE Transportation Electrification Conference & Expo
- Conference Location:
- Novi, Michigan, United States of America
- Conference Sponsor:
- IEEE
- View DOI Listing:
- https://doi.org/10.1109/ITECEATS66641.2026.11592926
Abstract
This paper proposes a four-phase wireless power transfer (FPWPT) system for high-power energy transfer applications. Compared with conventional circular three-phase WPT systems, the proposed FPWPT reduces magnetic flux density and heat flux while improving space utilization by fully occupying square or rectangular areas. Each phase coil can be implemented in a rectangular shape, offering greater flexibility for installation in space-constrained under-vehicle environments. The system also demonstrates strong interoperability with existing single-phase circular and double-D (DD) coils. In addition, the FPWPT mitigates magnetic flux crowding and reduces ripple currents at both the input and output DC terminals. The system is modeled and simulated using finite element analysis (FEA) and circuit-level tools. Results show that the FPWPT achieves low stray magnetic fields and heat flux and reduces the required DC bus filter capacitance.
