Electrical transmission or interconnection systems – Electromagnet or highly inductive systems
Patent
1992-11-17
1996-05-21
Wong, Peter S.
Electrical transmission or interconnection systems
Electromagnet or highly inductive systems
323222, H02J 700
Patent
active
055192629
ABSTRACT:
A system for power coupling independent of the position of the receiver over a surface. This is achieved by developing a spatially-dependent phase shift in the electromagnetic field generated by the power transmitter. The power inputs to the power receiver are then driven 180 degrees out of phase at any coordinate in the plane over the surface. An array of elements is placed in a plane below a surface and driven with a series of alternating current power sources. Consecutive adjacent elements across the area of the plane are driven with uniformly increasing phase shift. An integral multiple of adjacent consecutive elements results in a 180 degree phase shift. Pairs of field receiving elements in a power receiver are dimensioned to receive fields that are separated by 180 degrees of phase. Utilizing the technique of the invention, power coupling independent of the position or rotational orientation of the power receiver can be obtained.
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Christiansen Jon C.
Hollaar Lee A.
Krishnan Aditya
McCarthy Daniel P.
Wong Peter S.
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