Variable-Speed-Drive System for a Grid Blower
2 Assignments
0 Petitions
Accused Products
Abstract
A drive system for a grid blower of a vehicle is provided. The system includes: an electrical bus, a grid of resistive elements connected to the electrical bus, the grid of resistive elements configured to thermally dissipate electrical power generated from braking of the vehicle, the electrical power being transmitted on the electrical bus to the grid of resistive elements, an electrical power modulation device configured to modify electrical power received from at least one of the electrical bus and the grid of resistive elements, and a grid blower motor coupled to an output of the electrical power modulation device, wherein a speed of the grid blower motor varies based on the electrical power that has been modified by the electrical power modulation device.
5 Citations
24 Claims
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1-8. -8. (canceled)
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9. A method of controlling a grid blower to provide forced-air for a grid of resistive elements of a locomotive, the method comprising:
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generating an amount of electrical power across the grid of resistive elements based on an operation of the locomotive; and modulating at least some of the amount of electrical power to adjust at least one of a speed and a direction of a motor of the grid blower based on an operating condition; wherein the operation of the locomotive includes a dynamic braking operation in which the amount of electrical power is generated by a traction motor. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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10. (canceled)
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20. A locomotive blower motor switchable drive system comprising:
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a transfer switch; a first inverter coupled to a first input of the transfer switch; a second inverter coupled to a second input of the transfer switch; a first alternating current blower motor for powering an auxiliary component blower, the first alternating current blower motor coupled to a first output of the transfer switch; a second alternating current blower motor for powering a traction motor blower, the second alternating current blower motor coupled to a second output of the transfer switch; a third alternating current blower motor for powering a grid blower, the third alternating current blower motor coupled to a third output of the transfer switch; and a controller, the controller configured to cause the transfer switch to connect the first inverter with the first alternating current blower motor and connect the second inverter with the second alternating current blower motor at a first mode of operation, to connect the first inverter with the first alternating current blower motor and connect the second inverter with the third alternating current blower motor at a second mode of operation, and to connect the first inverter with the third alternating current blower motor and connect the second inverter with the second alternating current blower motor at a third mode of operation. - View Dependent Claims (21, 22, 23, 24)
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Specification