کنفرانس بین المللی ماشین و محرکه های الکتریکی

صفحه اصلی / The 5th International Conference on Electrical Machines and Drives

Design of circular spiral Coils with Ferrite cores for Double-sided LCC-Based Wirless Power Transfer system

نویسندگان :

Alireza Sakinejad¹ Adel Zakipour²

1- M.Sc. Student in Power Electronics, Arak University of Technology, Iran 2- Assistant Professor, Department of Electrical Engineering, Arak University of Technology, Arak, Iran

کلمات کلیدی :

Wireless Power Transfer،planar spiral coils،calculation of the mutual inductance and self inductance،misalignment،COMSOL Multiphysics،double-sided LCC compensation،electric vehicle charger

چکیده :

Wireless Power Transfer (WPT) systems rely critically on the geometry and electromagnetic properties of the transmitting and receiving coils. Among different coil structures, planar spiral coils are widely adopted due to their compactness and relatively high coupling performance. Accurate calculation of the mutual inductance and self- inductance of these coils is essential for optimizing system efficiency, transfer distance, and alignment tolerance. In this study, a simplified analytical approach based on Neumann’s integral in cylindrical coordinates is applied to evaluate the mutual inductance of planar spiral coils, considering both coaxial and misaligned cases. The results are validated through finite-element simulations , COMSOL Multiphysics modeling. Building upon this coil-level analysis, the proposed design is integrated into a double-sided LCC compensation topology, which is recognized for its ability to realize load-independent constant current (CC) and constant voltage (CV) charging modes under Zero Phase Angle (ZPA) operation. Finally, a suitable spiral coil configuration is presented that fulfills the requirements of the LCC-based bidirectional IPT system for electric vehicle charging. The combined methodology not only bridges accurate coil modeling with circuit-level compensation design but also provides a practical reference for developing efficient and reliable wireless charging systems.