Design of a Box-Shape Coil Structure to Achieve Uniform Magnetic Field Distribution for WPT

Jiahua Lyu1; Hong Cai Chen2; Yaping Du3; Yang Zhang4; Qingsha S. Cheng1

10.1109/ICPST56889.2023.10164939

2023

979-8-3503-1136-5

2023 IEEE International Conference on Power Science and Technology (ICPST)

450-453

5-7 May 2023

Kunming, China

A box-shape coil structure is proposed for the wireless power transfer (WPT) system. The assist coils parallel with the transmission direction are added around the primary coil. The proposed coil structure could achieve a more uniform magnetic field distribution, which enhances the ability of anti-misalignment. The uniform field is also beneficial to the realization of multi-receiver WPT. Calculations by Biot-Savart Law are adopted for field evaluation and further coil design. The results prove that the magnetic field uniformity of the proposed coil improves more than 20 times compared with an existing designed structure. The result of the proposed design is verified by FEM simulation, and the calculation result matches well with FEM simulation.

wireless power transfer coil design uniform magnetic field distribution

第一

EI

20233014450603

Inductive power transmission ; Magnetic fields ; Structural design

Structural Design, General:408.1 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Electric Power Transmission:706.1.1

IEEE

1.Dept. Electronics and Electrical Engineering, Southern University of Science and Technology, Shenzhen, China
2.School of Automation, Southerneast University, Nanjing, China
3.Dept. Building Environment and Energy Engineering, The Hong Kong Polytechinc University, Hong Kong SAR, China
4.College of Advanced Interdisciplinary, Studies National Universtiy of Defense Technology, Changsha, China

Jiahua Lyu,Hong Cai Chen,Yaping Du,et al. Design of a Box-Shape Coil Structure to Achieve Uniform Magnetic Field Distribution for WPT[C],2023:450-453.