Six Degrees of Freedom Mobile Inductive Power Transfer by Crossed Dipole Tx and Rx Coils


Six Degrees of Freedom Mobile Inductive Power Transfer by Crossed Dipole Tx and Rx Coils


Crossed dipole coils for the wide-range three-D omnidirectional inductive power transfer (IPT) are proposed. Free positioning of a plane receiving (Rx) coil is obtained for an arbitrary direction inside 1m from a plane transmission (Tx) coil. Both the Tx and Rx coils consists of crossed dipole coils with an orthogonal part distinction; hence, a rotating magnetic field is generated from the Tx, which permits the Rx to receive power vertically or horizontally. Thus, the 3-D omnidirectional IPT is 1st realized for both the plate sort Tx and Rx coils, which is crucial for sensible applications, where volumetric coil structure is very prohibited. This optimized configuration of coils has been obtained through a general classification of power transfer and searching for mathematical constraints on multi-D omnidirectional IPT. Standard loop coils are totally analyzed, and verified to be inadequate for the plate-kind omnidirectional IPT in this paper. Simulation-primarily based design of the proposed crossed dipole coils for a standardized magnetic field distribution is provided, and the three-D omnidirectional IPT is experimentally verified by prototype Rx coils for a wireless power­ zone of 1 m3 with a prototype Tx coil of 1 m2 at an operating frequency of 280 kHz, meeting the power matters alliance. The maximum overall potency was thirty three.6% when the input power was 100 W.

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