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Overhead wire transportation system and control method thereof

  • US 8,583,311 B2
  • Filed: 07/29/2011
  • Issued: 11/12/2013
  • Est. Priority Date: 07/30/2010
  • Status: Active Grant
First Claim
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1. An overhead wire transportation system in which a vehicle travels by electric power obtained from an overhead wire connected to a transformer substation, the overhead wire transportation system comprising:

  • a storage battery which stores the electric power obtained from the overhead wire; and

    a storage battery control device which controls charging or discharging of the storage battery,wherein the storage battery control device detects an overhead wire supply current value showing a sum of a current value output from the storage battery control device and a current value output from the transformer substation,a control mode of the storage battery control device is set to a charging rate adjustment mode in which charging or discharging of the storage battery is controlled in such a way that a charging rate of the storage battery becomes a charging rate target value when the detected overhead wire supply current value is less than a first threshold, andthe control mode of the storage battery control device is set to a constant voltage control mode in which charging or discharging of the storage battery is controlled in such a way that an output voltage of the storage battery control device is maintained at a constant voltage when the detected overhead wire supply current value is greater than or equal to the first threshold.

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