The University of Hong Kong

Cheng Zhang

Shu Yuen Ron Hui

Deyan Lin

Wai Man Ng

Methods, apparatuses, and systems for wireless power transfer (WPT) in ball-and-socket type structures are provided. A ball and ball-socket structure can include conductive windings and conductive plates having a variety of shapes to optimize WPT over different angles as the ball moves or rotates within the ball-socket. One or both of capacitive coupling and inductive coupling can be incorporated.

Ball and socket wireless power transfer systems

The present invention is directed towards methods and systems for omni-directional wireless power transfer. The method comprises generating magnetic field in all directions, detecting the loads based on the magnetic field shape and focusing the power flow towards the detected loads, so as to maximize the energy efficiency of the wireless power transfer.

Systems and methods for load position detection and power control of omni-directional wireless power transfer

A method of transmitting power wirelessly from at least two transmitter loops to at least one power receiver. The method comprises separately supplying a respective alternating current to each one of the transmitter loops thereby to transmit wireless power for receipt by the at least one power receiver. Also provided is a method of receiving power wirelessly. Associated apparatuses and an associated system are also provided.

Wireless power transfer system

Novel and advantageous insulator discs with embedded resonator coils are provided. By linking the insulator discs in a series using an appropriate mechanical mechanism, the insulator discs form an insulator or insulator string for a high power transmission line system. The resonator coils embedded inside the insulator discs therefore form a series of relay resonators that can be used for wireless power transfer through the principle of near-field magnetic coupling and resonance. The insulator string can provide the simultaneous functions of voltage insulation and wireless power transfer over the length of the string. Applications include, but not limited to, wireless power transfer in a high-voltage environment such as that encountered in high-voltage power transmission line systems.

It is directed towards methods and systems for omni-directional wireless power transfer. The method comprises generating magnetic field in all directions, detecting the loads based on the magnetic field shape and focusing the power flow towards the detected loads, so as to maximize the energy efficiency of the wireless power transfer.

The present invention provides a wireless power transmitter comprising at least two loops, and separate drivers, each driving a respective one of the loops and providing a respective alternating current to the respective loop, thereby to transmit wireless power for receipt by at least one wireless power receiver. Also provided is a wireless power receiver comprising a receiver loop, and at least two focusing loops. An associated system and an associated method are also provided.

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Hong Kong, China

Cheng Zhang