Power coupling device
First Claim
1. A power coupling device for coupling power to a rotating member, said power coupling device comprising:
- a. a primary magnetic core defining a first recess;
b. a secondary magnetic core defining a second recess and disposed adjacent said primary magnetic core;
wherein said primary and secondary cores are arranged so as to form an air gap therebetween, said air gap permitting relative rotation of said cores about a common axis of rotation; and
c. a primary conductive winding disposed within said first recess and a secondary conductive winding disposed within said second recess;
wherein at least one of said primary and said secondary windings comprises a fractional turn winding.
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Accused Products
Abstract
A power coupling device for coupling power to a rotating member includes a primary magnetic core defining a first recess, and a secondary magnetic core defining a second recess and disposed adjacent the primary magnetic core. The primary and secondary cores are arranged so as to form an air gap therebetween. The air gap permits relative rotation of the cores about a common axis of rotation. A primary conductive winding is disposed within the first recess, and a secondary conductive winding is disposed within the second recess. At least one of the primary and secondary windings is a fractional turn winding, thereby enabling the transfer of power between multiple input and output voltages. Shielding is provided by a pair of continuous, circular, semi-toroidal shells arranged to support the currents needed to cancel the fields from the transformer.
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Citations
29 Claims
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1. A power coupling device for coupling power to a rotating member, said power coupling device comprising:
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a. a primary magnetic core defining a first recess;
b. a secondary magnetic core defining a second recess and disposed adjacent said primary magnetic core;
wherein said primary and secondary cores are arranged so as to form an air gap therebetween, said air gap permitting relative rotation of said cores about a common axis of rotation; and
c. a primary conductive winding disposed within said first recess and a secondary conductive winding disposed within said second recess;
wherein at least one of said primary and said secondary windings comprises a fractional turn winding. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A system including a power coupling device adapted to transmit power at a plurality of voltage levels, said system comprising:
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a. a static member;
b. a rotatable member coupled to said static member;
c. a power source; and
d. an inductive power coupling device responsive to said power source for transmitting power from said power source to at least one of said static member and said rotatable member, said inductive power coupling device comprising i. a primary magnetic core defining a first recess;
ii. a secondary magnetic core defining a second recess;
wherein said primary and secondary cores are disposed so as to form an air gap therebetween, said air gap permitting relative rotation of said cores about a common axis of rotation;
iii. a primary conductive winding disposed within said first recess and a secondary conductive winding disposed within said second recess;
wherein at least one of said primary and said secondary windings comprises a fractional turn winding. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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Specification