Power Transfer Unit of a System for Inductive Power Transfer, a Method of Manufacturing a Primary Power Transfer Unit and of Operating a Primary Power Transfer Unit
First Claim
1. A power transfer unit of a system for inductive power transfer, wherein the power transfer unit comprises a winding structure, wherein the power transfer unit further comprises at least one flux guiding means for guiding a magnetic flux of an electromagnetic field,whereinthe at least one flux guiding means comprises or provides at least one low reluctance section with a first reluctance and at least one high reluctance section with a second reluctance, wherein the second reluctance is higher than the first reluctance, wherein the at least one high reluctance section extends parallel to a lateral axis of the winding structure, andwhereina geometric centre or centreline of the at least one high reluctance section is arranged within a centre plane between two adjacent poles provided by the winding structure.
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Abstract
A power transfer unit of a system for inductive power transfer, wherein the power transfer unit includes a winding structure, and at least one flux guiding means for guiding a magnetic flux of the electromagnetic field, wherein the at least one flux guiding means provides at least one low reluctance section with a first reluctance and at least one high reluctance section with a second reluctance, and the second reluctance is higher than the first reluctance. Also, a method of manufacturing a power transfer unit and a method of operating a power transfer unit.
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Citations
13 Claims
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1. A power transfer unit of a system for inductive power transfer, wherein the power transfer unit comprises a winding structure, wherein the power transfer unit further comprises at least one flux guiding means for guiding a magnetic flux of an electromagnetic field,
wherein the at least one flux guiding means comprises or provides at least one low reluctance section with a first reluctance and at least one high reluctance section with a second reluctance, wherein the second reluctance is higher than the first reluctance, wherein the at least one high reluctance section extends parallel to a lateral axis of the winding structure, and wherein a geometric centre or centreline of the at least one high reluctance section is arranged within a centre plane between two adjacent poles provided by the winding structure.
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10. A method of manufacturing a power transfer unit comprising the steps of
providing a winding structure, providing at least one flux guiding means for guiding a magnetic flux of the electromagnetic field such that the at least one flux guiding means comprises or provides at least one low reluctance section with a first reluctance and at least one high reluctance section with second reluctance, wherein the second reluctance is higher than the first reluctance, wherein the at least one high reluctance section extends parallel to a lateral axis of the winding structure, wherein a geometric centre or centreline of the at least one high reluctance section is arranged within a centre plane between two adjacent poles provided by the winding structure.
Specification