Overhead wire transportation system and control method thereof
First Claim
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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Accused Products
Abstract
A storage battery control device detects an overhead wire supply current value showing a sum of a current value output from a storage battery and a current value output from a transformer substation, and charging or discharging of the storage battery is controlled so 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. In addition, charging or discharging of the storage battery is controlled so that the output voltage of the storage battery control device is maintained at a constant voltage control mode when the detected overhead wire supply current value is greater than or equal to the first threshold.
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Citations
9 Claims
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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:
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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, and the 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A control method of an overhead wire transportation system, in which a vehicle travels by electric power obtained from an overhead wire connected to a transformer substation, including 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,
the control method of an overhead wire transportation system comprises the steps of; detecting 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 in the storage battery control device; and setting a control mode of the storage battery control device 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 in the storage battery control device; and setting the control mode of the storage battery control device 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 in the storage battery control device.
- and a storage battery control device which controls charging or discharging of the storage battery,
Specification