System, vehicle, and method
First Claim
1. A power system, comprising:
- a first voltage bus;
a traction motor configured to generate electrical power during a regenerative braking mode and to supply the generated electrical power to the first voltage bus;
an auxiliary system coupled to the first voltage bus, the auxiliary system comprising;
a second voltage bus;
a power interface unit coupling the first voltage bus to the second voltage bus, wherein a power extraction point to the second voltage bus follows a diode connected to an intermediate point of a resistor chain, further wherein the power interface unit is configured to receive the generated electrical power from the first voltage bus and to convert at least ten percent of the generated electrical power into non-electrical energy;
an energy storage device coupled to the second voltage bus and configured to store energy supplied to the second voltage bus and configured to supply stored energy to the second voltage bus; and
an auxiliary load configured to receive power based on power in the second voltage bus.
1 Assignment
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Accused Products
Abstract
A power system is provided that includes a first voltage bus, a traction motor configured to generate electrical power during a regenerative braking mode and to supply the generated electrical power to the first voltage bus, and an auxiliary system coupled to the first voltage bus. The auxiliary system comprises a second voltage bus and a power interface unit coupling the first voltage bus to the second voltage bus. The auxiliary system also comprises an energy storage device coupled to the second voltage bus and configured to store energy supplied to the second voltage bus and configured to supply stored energy to the second voltage bus and an auxiliary load configured to receive power based on power in the second voltage bus.
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Citations
14 Claims
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1. A power system, comprising:
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a first voltage bus; a traction motor configured to generate electrical power during a regenerative braking mode and to supply the generated electrical power to the first voltage bus; an auxiliary system coupled to the first voltage bus, the auxiliary system comprising; a second voltage bus; a power interface unit coupling the first voltage bus to the second voltage bus, wherein a power extraction point to the second voltage bus follows a diode connected to an intermediate point of a resistor chain, further wherein the power interface unit is configured to receive the generated electrical power from the first voltage bus and to convert at least ten percent of the generated electrical power into non-electrical energy; an energy storage device coupled to the second voltage bus and configured to store energy supplied to the second voltage bus and configured to supply stored energy to the second voltage bus; and an auxiliary load configured to receive power based on power in the second voltage bus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method, comprising:
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coupling an auxiliary power bus of an off-highway vehicle to a main power bus of the off-highway vehicle via a power interface unit configured to deliver less than ninety percent of the power transferred through the power interface unit from the main power bus to the auxiliary power bus; coupling a battery pack to the auxiliary power bus; coupling an auxiliary load to the auxiliary power bus; charging the battery pack during a regenerative braking mode of the off-highway vehicle; and supplying power from the battery pack to the auxiliary power bus during a non-regenerative braking mode of the off-highway vehicle to power the auxiliary load. - View Dependent Claims (13, 14)
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Specification