POWER TRANSFER SYSTEM AND METHOD
First Claim
Patent Images
1. A system, comprising:
- a primary loop that is disposed adjacent to a location, that is coupled to a power source, and that is capable of transmitting power from the power source;
a secondary receiving coil that is disposed on a mobile asset, that is coupled to a traction motor, and that is operable to receive power that the primary loop transmits; and
a field-focusing element that can focus a magnetic field from the primary loop onto the secondary receiving coil, wherein the field-focusing element has a non-linear current distribution.
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Abstract
A contactless power transfer system for a mobile asset is presented. The system includes a primary loop disposed adjacent to a location that is coupled to a power source. A secondary receiving coil is disposed on the mobile asset and coupled to a traction motor for receiving power from the primary loop. The power transfer system further includes a field-focusing element that can focus a magnetic field from the primary loop onto the secondary receiving coil, the field-focusing element having a non-linear current distribution.
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Citations
20 Claims
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1. A system, comprising:
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a primary loop that is disposed adjacent to a location, that is coupled to a power source, and that is capable of transmitting power from the power source; a secondary receiving coil that is disposed on a mobile asset, that is coupled to a traction motor, and that is operable to receive power that the primary loop transmits; and a field-focusing element that can focus a magnetic field from the primary loop onto the secondary receiving coil, wherein the field-focusing element has a non-linear current distribution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of transferring power comprising:
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transmitting power from a power source coupled to a primary loop onto a secondary receiving coil while focusing a magnetic field from the primary loop onto the secondary receiving coil, wherein the secondary receiving coil is disposed on a mobile asset and coupled to one or more traction motors for propelling the mobile asset, and converting the transmitted power into mechanical energy to propel the mobile asset. - View Dependent Claims (17, 18)
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19. A system, comprising:
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a primary loop that is disposed on a mobile asset, that is coupled to a power source secured to the mobile asset, and that is capable of transmitting power from the power source; a secondary receiving coil that is disposed at a distance from the primary loop, and that is operable to receive power that the primary loop transmits; and a field-focusing element that can focus a magnetic field from the primary loop onto the secondary receiving coil, wherein the field-focusing element has a non-linear current distribution.
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20. A locomotive configured to receive power wirelessly comprising:
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a wireless power transfer system comprising a secondary coil disposed on the locomotive to receive high frequency power from a primary loop disposed adjacent to a stationary track; and
a field focusing element interposed between the primary loop and the secondary coil and configured to focus a magnetic field from the primary loop to the secondary coil, the field focusing element having a non-linear current distribution;a converter coupled to the secondary coil and configured to convert high frequency power to low frequency power suitable for driving one or more traction motors coupled to the locomotive and configured as a prime mover; and a storage module configured for storing and supplying power.
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Specification