Power supply device and power supply system of hybrid railway vehicle, and railway vehicle

Abstract

A power supply device (10) for a hybrid railway vehicle, a power supply system including the power supply device (10) and the railway vehicle including the power supply system. The power supply device (10) comprises a super capacitor (101) and a storage battery bank (102). The super capacitor (101) is connected in parallel with the storage battery bank (102). The super capacitor (101) and the storage battery bank (102) are both connected to the power supply system in the vehicle, thereby providing a power supply voltage source for the power supply system in the vehicle in a state that a contact network is separated from the power supply system of the vehicle. The power supply device (10) is characterized in that the super capacitor (101) and the storage battery bank (102) are connected in parallel, so that the electric energy output by both the super capacitor (101) and the storage battery bank (102) serves as the power supply voltage source for the power supply system together, and provides power to the traction motor (50) of the vehicle through the power supply system when the contact network is separated from the power supply system or the contact network has a power failure. Hence the electric energy required for driving the vehicle to run can be continuously output for a long time, therefore enabling safe running of the vehicle.

Description

technical field [0001] The invention relates to electrical control technology, in particular to a power supply device, a power supply system and a rail vehicle of a hybrid rail vehicle. Background technique [0002] A hybrid rail vehicle is a vehicle in which two or more power sources provide the initial voltage source for the vehicle's power supply system. At present, in a hybrid rail vehicle, the catenary + on-board supercapacitor is mainly used as the initial voltage source of the vehicle power supply system. The traction motor is powered through the power supply system to drive the traction motor, thereby providing traction power for the vehicle through the traction motor. [0003] In this form of power supply system, when the catenary has power, the catenary is used as the initial voltage source to supply power to the traction motor to drive the traction motor; when the vehicle power supply system is separated from the catenary or the catenary has no power, the supercap...

AI Technical Summary

Problems solved by technology

[0004] However, since the electric energy that can be stored by supercapacitors is low, and the electric energy consumed by rail vehicles is relatively large, the electric energy stored in supercapacitors can usually only drive the vehicles for a few minutes. When the power supply system is separated from the power supply system for a long time, the supercapacitor alone cannot provide the initial voltage source for the long-distance operation of the vehicle, so it will affect the safe operation of the rail vehicle

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