LCC-compensated wireless power receiver: an efficient and lightweight solution for EVs

This study explores strategies to reduce the weight of copper windings and ferrite tiles in wireless power transfer (WPT) receiver coils for electric vehicles (EVs). Copper reduction is achieved by minimizing the number of coil turns, while ferrite reduction is accomplished through optimization of the ferrite layer shape. These measures significantly lower the receiver coil's weight and cost. The main challenge, however, lies in maintaining high power transfer efficiency. To address this, a double-sided LCC (Inductor-Capacitor-Capacitor) compensation topology is employed. Finite element field simulations and circuit-level analysis are used to design a receiver coil that minimizes the use of ferrite and copper, achieving a significant weight reduction (approximately 4 kg) while maintaining a power transfer efficiency of up to 96%.