Optimization of unipolar magnetic couplers for EV wireless power chargers

2016 International Conference on New Energy and Future Energy System

Zeng, H.^1 ; Liu, Z.Z.^1 ; Chen, H.X.^1 ; Zhou, B.^1 ; Hei, T.^1

School of Electrical Engineering, Shandong University, Jinan

250061, China^1

关键词: 3d-fem simulations;    Core structure;    Coupling coefficient;    Magnetic couplers;    Transmission efficiency;    Wireless Power Chargers;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/40/1/012010/pdf
DOI  :  10.1088/1755-1315/40/1/012010

来源: IOP

【 摘 要 】

In order to improve the coupling coefficient of EV wireless power chargers, it's important to optimize the magnetic couplers. To improve the coupling coefficient, the relationship between coupling coefficient and efficiency is derived, and the expression of coupling coefficient based on magnetic circuit is deduced, which provide the basis for optimizing the couplers. By 3D FEM simulation, the optimal core structure and coils are designed for unipolar circular couplers. Experiments are designed to verify the correctness of the optimization results, and compared with previous coupler, the transmission efficiency is improved and weight is reduced.