System for transferring electrical power between non-contacting elements in relative motion
First Claim
1. A system for transferring electrical energy between relatively moving objects, comprising:
- a primary pole system comprising concentric inner and outer annular portions connected to each other by one or a plurality of symmetrically arranged radially extending portions;
a primary coil, respectively wound around each of the radially extending portions of the primary pole system and each connected to an a.c. power source;
a secondary pole system comprising concentric inner and outer annular portions connected to each other by one or a plurality of symmetrically arranged radially extending portions, the annular portions of the secondary pole system being coaxial with the annular portions of the primary pole system about a common axis and separated from the annular portions of the primary pole system by a predetermined even gap; and
a secondary coil, respectively wound around each of the radially extending portions of the secondary pole system and each connected to an a.c. power output,wherein at least one of the primary and secondary pole systems rotates relative to the other about the common axis.
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Accused Products
Abstract
A system is provided for transmitting a.c. electrical power across a small, even gap, without any physical contact, from a primary pole system to a secondary pole system, one of which moves relative to the other. Relative movement between the pole system may be rotational as when the primary and secondary pole systems are coaxial, or may involve translational linear motion as when there is an elongate primary pole system and an elongate parallel secondary pole system. The purpose, whether the relative motion is rotational or translational, is to transfer electrical power at a controlled frequency, voltage, and current level across the gap for utilization at the relatively moving poles/elements of the system. The magnetic field across the gap between the primary and secondary pole systems is always changing in accordance with the power supplied to the primary coils and this changing field remains continuous throughout the distance traveled by the secondary poles.
29 Citations
41 Claims
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1. A system for transferring electrical energy between relatively moving objects, comprising:
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a primary pole system comprising concentric inner and outer annular portions connected to each other by one or a plurality of symmetrically arranged radially extending portions; a primary coil, respectively wound around each of the radially extending portions of the primary pole system and each connected to an a.c. power source; a secondary pole system comprising concentric inner and outer annular portions connected to each other by one or a plurality of symmetrically arranged radially extending portions, the annular portions of the secondary pole system being coaxial with the annular portions of the primary pole system about a common axis and separated from the annular portions of the primary pole system by a predetermined even gap; and a secondary coil, respectively wound around each of the radially extending portions of the secondary pole system and each connected to an a.c. power output, wherein at least one of the primary and secondary pole systems rotates relative to the other about the common axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system for transferring electrical energy between relatively moving objects, comprising:
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a primary pole system comprising coaxial first and second annular portions connected to each other by one or a plurality of symmetrically arranged, axially extending connecting portions disposed around a central axis; a primary coil, respectively wound around the each of the connecting portions of the primary pole system and each connected to an a.c. power source; a secondary pole system comprising coaxial first and second annular portions connected to each other by one or a plurality of symmetrically arranged, axially extending connecting portions, the annular portions of the secondary pole system being radially aligned with corresponding annular portions of the primary pole system about the central axis and separated therefrom by a predetermined even gap; and a secondary coil respectively wound around each of the connecting portions of the secondary pole system and each connected to an a.c. power output, wherein at least one of the primary and secondary pole systems rotates relative to the other about the common axis. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. A system for transferring electrical energy between relatively moving objects, comprising:
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a primary pole system comprising paired, parallel linear portions connected to each other by one or a plurality of transverse connecting portions; a primary coil, respectively wound around each of the transverse connecting portions of the primary pole system and each connected to an a.c. power source; a secondary pole system comprising paired, parallel linear portions connected to each other by at least one transverse connecting portion and maintained parallel to corresponding linear portions of the primary pole system and separated from the primary pole system by a predetermined even gap; and at least one secondary coil wound around the at least one transverse connecting portion of the secondary pole system and connected to an a.c. power output, wherein at least one of the primary and secondary pole systems translates relative to the other in a longitudinal direction thereof. - View Dependent Claims (40, 41)
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Specification