Abstract: An energy storage system for connection to a traction power supply that provides power to an electric vehicle. The energy storage system includes a power controller that controls a DC-DC converter to transfer electrical energy from the traction power supply to electrical energy storage when the train is braking. The power controller also controls the converter to transfer electrical energy from the electrical energy storage to the traction power supply when the train is accelerating. The controller slows the rate of energy transfer when upper and lower voltage boundary limits of the electrical energy storage are approached, respectively.

Abstract: An energy storage system for connection to a traction power supply that provides power to an electric vehicle. The energy storage system includes a power controller that controls a DC-DC converter to transfer electrical energy from the traction power supply to electrical energy storage when the train is braking. The power controller also controls the converter to transfer electrical energy from the electrical energy storage to the traction power supply when the train is accelerating. The controller slows the rate of energy transfer when upper and lower voltage boundary limits of the electrical energy storage are approached, respectively.

Abstract: A combination DC/data bus assembly for power converter equipment racks includes a pair of side-by-side vertical DC bus bars forming a slot between them. Extruded insulating strips carrying data bus bars are mounted in the DC bus bars so that the data bus bars face each other across the slot. Channels are formed in the front faces of the DC bus bars. A connector mounted on the power converter chassis has male DC contacts that engage the channels, and a male data contact assembly that slides into the slot to make contact with the data bus bars.

Abstract: A combination DC/data connector for connecting electrical equipment stacked in a rack to a continuous vertical combined DC/data bus includes a data connector which cooperates with a slot in the DC/data bus assembly to align the DC/data connector with the bus assembly and make contact with data buses on the walls of the slot. The DC/data connector also includes a pair of DC connectors which slide into channels in the DC bus bars of the DC/data bus assembly after the DC/data connector has been aligned with the bus assembly by the data connector. The data contacts of the DC/data connector are mounted on both sides of a printed circuit card which can be slid into the data connector, and which provides the interconnections between the data contacts and the equipment data interface.