Supercapacitor energy storage device control system based on voltage change rate

The invention relates to a supercapacitor energy storage device control system based on a voltage change rate. According to the invention, a supercapacitor group is connected with a DC/DC converter; the DC/DC converter is connected to a traction network through a connection unit; a control unit is connected with the DC/DC converter and the connection unit; the supercapacitor group is used for storing and releasing locomotive regeneration energy; the DC/DC converter is used for realizing voltage boosting and voltage reducing; the connection unit is used for realizing switching and protection ofan energy storage device; and the control unit is used for controlling the on-off states of the DC/DC converter and the connection unit to realize charging, discharging and idle work of the energy storage device. According to a technical scheme in the invention, a voltage change rate switching control strategy is adopted, the charging frequency of the supercapacitor energy storage device can be reduced, energy can be abs