Anti-Deflection and Interoperability Study of WPT Based on Distributed Transmitting Coils

The offset of the relative position between the receiver and transmitter in the radio energy transmission system will affect the system transmission efficiency to a certain extent. In this paper, the full-range offset resistance and interoperability of the coupling mechanism are investigated in two aspects. A proposed many-to-one coupling mode is proposed, the transmit coil type is a planar distributed transmit unit coil combination, and the open mode of the distributed transmit coil is studied for different receive coil types, axial offset conditions and rotational offset conditions of the position mode to achieve interoperability and wide-range all-directional offset resistance of the receive coil. To improve the degree of freedom of the distributed transmit coil, a distributed series control logic circuit is proposed, and the resonance parameters of the transmit coil are designed for the series connection condition to reduce the effect of cross-coupling. The search strategy for receiving coil position detection is proposed by combining the magnetic field characteristics of the distributed transmit coil and the pickup voltage detection method based on the LCC-S resonant topology. An experimental setup is built to verify the feasibility of achieving anti-deflection and interoperability.