High Efficiency Wireless Power Transfer System for Medium Power

As the technology matures and increased demand for wireless charging, the development of wireless power transfer technology is getting more and more concern. This paper analyzed the wireless power transfer system through mutual inductance equivalent model and obtained the mathematical relationship between various parameters. It also analyzed the system's losses type and proposed some methods to reduce losses. In this paper, a new structure of transformer was used to design a set of WPT system it was lighter, smaller and had got a high efficiency which reached 94% through experiments. Keywords-wireless power transfer; medium power; high