Wireless Power Transfer-A Review

This paper presents the current state of knowledge in the field of wireless power transfer. The concept of such a transfer and the basic methods of its implementation are described, together with block diagrams of the necessary devices. The technologies of electrical power transfer over short and long distances are characterized. The most popular electrical power transfer technology based on the phenomenon of electromagnetic induction is discussed in great detail. The analysis of the influences of such factors as the coupling factor, the shape of the coils, the type of ferromagnetic material from which the core of the coils is made, and the mutual position of the transmitting and receiving coils are analyzed on the properties of the wireless power transfer system. The advantages and disadvantages of the used technologies are shown. Furthermore, a wireless power transfer system is presented for charging the batteries of electric vehicles. The standards of wireless power transfer are also presented, and development trends are outlined.

Automated summary

This paper presents the current state of knowledge in the field of wireless power transfer, including the concept, implementation methods, necessary devices, and classification of short and long-distance power transfer technologies. The popular technology based on electromagnetic induction is discussed in detail, with analysis of factors influencing the system's performance. The advantages and disadvantages of the used technologies are shown, along with the introduction of a wireless power transfer system for charging electric vehicles. The standards and development trends of wireless power transfer are also outlined.