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System, vehicle, and method

  • US 8,047,317 B2
  • Filed: 11/05/2008
  • Issued: 11/01/2011
  • Est. Priority Date: 11/05/2008
  • Status: Active Grant
First Claim
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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.

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