A Critical Review on WPT for Midrange Operation

Wireless power transfer via magnetic resonance coupling method has opened a new possibility to the electrical system. It allows the possibility of power transfer in critical locations without wire. However, although the efficiency of power transmission is relatively high, the efficiency still depends on some of the critical factors. There have been several researches on methods to maintain power transmission at the highest efficiency. However, in such systems, some of the parameters are taken care of for the successful high power transfer efficiency (PTE). Therefore, it has come to attention that parameter estimation is a crucial factor to implement a successful WPT system. This paper presents a review on the critical factors of midrange wireless power transfer.