Systems and 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
Estimating the term…
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 may 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 power system comprising:
- a power source electrically connected to an electrical intermediary device via one or more switch devices, the electrical intermediary device configured to convey electric current generated by a vehicle on a route as the vehicle travels along the route;
- a resistor grid electrically connected to the electrical intermediary device via the one or more switch devices, the resistor grid comprising multiple resistors electrically connected to each other in a circuit, at least a first resistor of the multiple resistors including a body that extends along a center axis of the body from a first terminal end of the body to a second terminal end of the body, the body including a porous matrix that defines a network of pores, at least some of the pores in the network being interconnected and configured to receive flow therethrough of a cooling fluid, the porous matrix continuously extending along an entire cross-sectional surface area of the body perpendicular to the center axis;
- and
- a controller operably connected to the one or more switch devices and configured to control the one or more switch devices to direct an excess portion of the electric current received from the electrical intermediary device to the resistor grid for the multiple resistors to dissipate the excess portion of the electric current as heat.
A resistor comprising:
- an elongated body that extends along a center axis of the elongated body from a first terminal end of the elongated body to a second terminal end of the elongated body, the elongated body including a porous matrix that defines a network of pores, at least some of the pores in the network being interconnected and configured to receive flow therethrough of a cooling fluid, the porous matrix continuously extending along an entire cross-sectional surface area of the elongated body perpendicular to the center axis,
- the elongated body 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 elongated body.
A resistor comprising:
- an elongated body that extends along a center axis of the elongated body from a first terminal end of the elongated body to a second terminal end of the elongated body, the elongated body including a center portion, through which the center axis extends, and an outer portion radially outside of the center portion and surrounding the center portion,
- the elongated body including a porous matrix that defines a network of pores, the porous matrix disposed in both the center portion and the outer portion, at least some of the pores in the network being interconnected and configured to receive flow therethrough of a cooling fluid, wherein first pores in the network located within the center portion have at least one of a different pore density, pore size, number of pores, or relative proximity to one another than second pores in the network located within the outer portion,
- the elongated body 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 elongated body.
Dependencies are inferred from the claim text.