A T-type Compensation Network for Wireless Power Transfer Relay System

Abstract

In this paper, the load current stability for the wireless power transmission (WPT) with passive relays is investigated. Considering the energy transmission scenario under n passive relays, through the theory of magnetic resonance, a T-type compensation network is presented at the load receiving to achieve load independence, which can maintain an almost constant current when the load impedance changes. Perform circuit derivation and simulation analysis on the model, and design experiments to verify the correctness and practicability. It is found that compared with the conventional wireless power transmission system, the proposed system increases the transfer distance and achieves load current independence as well.