Vehicle-mounted hybrid energy storage device applied to urban rail transit
A technology of urban rail transit and hybrid energy storage, which is applied in the field of vehicle-mounted hybrid energy storage devices, can solve the problems of less energy storage in supercapacitors and cannot meet the long-term power supply requirements, so as to save time, reduce personnel panic and corresponding times The probability of disasters and the effect of reducing energy consumption of urban rail transit
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[0033] A vehicle-mounted hybrid energy storage device used in urban rail transit, including multiple sets of half-bridge DC / DC converters for different conversions, multiple sets of supercapacitors for high-power discharge, and control of precharge and voltage across terminals High and low switching tubes, series and parallel circuits of multiple batteries for long-term discharge, and three sets of filter inductors and capacitors for filtering. Multiple sets of half-bridge DC / DC converters for different conversions, in which the input end of the high-voltage converter is connected to the power supply grid, the main traction system and the auxiliary system, and the switch tube is installed to prevent current backflow, and the output end and the ratio are completed The low-voltage half-bridge converter connects the super capacitors of different voltage levels with the battery pack. The switch tube to prevent current backflow is used to physically cut off the conn
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