Resistors for dynamic braking
AssigneeTransportation IP Holdings, LLC
InventorsSudeep Pradhan Sadananda Rao, Jaime Garcia, Mahantesh Hosur, Jeffrey John Wolff, Laura Cooper
Life of this patent
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Abstract
A resistor includes an elongated cylindrical body having nodes and elongated members. The elongated members interconnect the nodes to form openings between the nodes and the elongated members for the flow therethrough of a cooling fluid. The body is configured to receive electric current from a powered system and to conduct and provide electric resistance to the electric current to dissipate at least part of the electric current as heat from the body. The body also is configured to be coupled with at least one other resistor of the powered system in one or more of a parallel or series arrangement in an electric circuit.
Claims20
A resistor comprising:
- an elongated cylindrical body that extends along a center axis from a first terminal end to an opposite, second terminal end, the body having elongated members interconnected to one another at nodes to define openings between the nodes and the elongated members for flow therethrough of a cooling fluid, wherein the elongated members and the nodes form a lattice structure with the elongated members being elongated in multiple different directions relative to each other in a three-dimensional space, and at least some of the nodes are located at different radial distances from the center axis,
- wherein the body is configured to receive electric current from a powered system and to conduct and provide electric resistance to the electric current to dissipate at least part of the electric current as heat from the body,
- wherein the body also is configured to be coupled with at least one other resistor of the powered system in one or more of a parallel or series arrangement in an electric circuit.
A method for manufacturing a resistor, the method comprising:
- successively applying layers of material on each other, each of the layers forming a cross-sectional shape of a three-dimensional resistor body;
- and
- fusing adjacent layers of the layers that are successively applied with each other to form the resistor body,
- wherein the layers are successively applied and fused to form the resistor body to have an elongated cylindrical shape that extends along a center axis from a first terminal end to an opposite, second terminal end, the resistor body comprised of elongated members interconnected to one another at nodes to define openings between the nodes and the elongated members for flow therethrough of a cooling fluid, wherein the elongated members and the nodes form a lattice structure with the elongated members being elongated in multiple different directions relative to each other in a three-dimensional space, and at least some of the nodes are located at different radial distances from the center axis,
- wherein the resistor body is formed to receive electric current from a powered system and to dissipate at least part of the electric current as heat from the resistor body, and the resistor body is formed to be coupled with at least one other resistor of the powered system in one or more of a parallel or series arrangement in an electric circuit.
A resistor comprising:
- an elongated cylindrical body that extends along a center axis from a first terminal end to an opposite, second terminal end, the body having elongated members interconnected to one another at nodes to define openings between the nodes and the elongated members for flow therethrough of a cooling fluid, the elongated members and the nodes disposed along an entire length of the body from the first terminal end to the second terminal end to provide a continuous electrically conductive path from the first terminal end to the second terminal end through the elongated members and the nodes,
- wherein the body is configured to receive electric current at the first terminal end from a powered system and to conduct and provide electric resistance to the electric current to dissipate at least part of the electric current as heat from the body, and the second terminal end of the body is configured to be coupled with at least one other resistor of the powered system in one or more of a parallel or series arrangement in an electric circuit.
Dependencies are inferred from the claim text.