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Battery-powered vehicle with AC driven traction and pump motors for mining applications

  • US 7,053,568 B2
  • Filed: 09/20/2004
  • Issued: 05/30/2006
  • Est. Priority Date: 09/20/2004
  • Status: Active Grant
First Claim
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1. A battery-powered apparatus adapted to be driven over the roadways existing in and around an underground mine, said apparatus comprising:

  • a wheeled vehicle including a first set of wheels and a second set of wheels, said first set of wheels including at least first and second wheels;

    a battery carried by said vehicle, said battery being the primary power source for said vehicle; and

    a drive system supported on said vehicle, said drive system includinga first AC induction motor coupled to said first wheel;

    a second AC induction motor coupled to said second wheel;

    a drive assist means coupled to said second set of wheels;

    a first DC/AC conventer for converting DC voltage from said battery into an AC voltage for driving said first AC induction motor, said first DC/AC converter having an input connected directly to said battery and an output connected directly to said first induction motor; and

    a second DC/AC converter for converting DC voltage from said battery into an AC voltage for driving said second AC induction motor, said second DC/AC converter having an input connected directly to said battery and an output connected directly to said second induction motor.

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