Shielded power coupling device

Abstract

Axisymmetric solid of revolution derivable from section at figure 5 is generally toroidal with electric current(s) in windings (110, 160) preferably flowing circumferentially along major circle(s) during power coupling device operation. Current(s) in windings (110, 160); current(s) in half-shields (120, 170); and the volume of space swept out by shield airgap(s) (101) emerge from plane of paper perpendicularly at figure 5 but as these emerge therefrom they curve to follow toroidal major circle(s). Cores (115, 165) preferably shunt and align magnetic flux such that magnetic field lines escape therefrom primarily only in region(s) of core airgap(s) and such that magnetic flux loops lie in planes of toroidal minor circle(s). Half-shield(s) (120, 170) preferably have electrically conductive material(s) distributed therein as is sufficient to substantially cancel magnetic flux lines impinging thereon before effects of such impinging magnetic flux lines would reach shield airgap(s) (101) and / or outer surface(s) of half-shields (120, 170).

Description

[0001] Research sponsored by the U.S. Federal Government: [0002] Not applicable [0003] Name of party to collaborative research agreement: [0004] Not applicable [0005] Citations of material on the CD are incorporated by: [0006] Not applicable [0007] Cross References to Related Applications [0008] This application is a continuation of application under 35 USC 120 claiming patent application number 10 / 787270 filed February 26, 2004 entitled "Power Coupling Apparatus" and pending Priority to the commonly-owned U.S. patent application 10 / 787270, which also claims application number 60 / 450038 under 119(e) of title 35 of the United States Code, entitled "Contactless Power Coupling Apparatus", priority of the expired U.S. provisional application filed on February 26, 2003. Additionally, the contents of US Patent Application 10 / 787,270 and US Provisional Application 60 / 450,038 are incorporated herein by reference in their entirety. technical field [0009] The pres...

AI Technical Summary

Problems solved by technology

For example, lack of adequate shielding can lead to undesirable RF (radio frequency) emissions, increased leakage inductance, and / or reduced power transfer efficiency, etc.

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