Patent ID: 8583311
Filing Date: 2013-11-12
Classification: B60M

Abstract:
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, 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.