Power supply method of hybrid power rail vehicle

Abstract

The invention provides a power supply method of a hybrid power rail vehicle. The method comprises the following steps of: reducing voltage on a pantograph output line for a pre-set multiple by a voltage transformer and outputting; obtaining operation state information of a vehicle by a vehicle information obtaining unit; collecting current state information of a super capacitor and a storage battery pack by a power supply device information collecting unit; and generating a control signal for a traction converter by a control unit according to the output voltage of the voltage transformer, the current operation information of the vehicle, the current state information of the super capacitor and the current state information of the storage battery pack, thus controlling the work state of the traction converter. According to the power supply method, electric energy output by the super capacitor and the storage battery pack is used as a power supply voltage source of a power supply system; when a contact net is separated from the power supply system or the contact net is powered off, the electric energy for driving the vehicle to move can be continuously output for a longer period of time; and a traction motor of the vehicle is powered by the power supply system for a longer period of time, so that the safe operation of the vehicle is guaranteed.

Description

technical field [0001] The invention relates to electrical control technology, in particular to a power supply method for 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 serves as the initial voltage source to supply power to the traction motor to drive the traction motor; The voltage source supplies power to the traction motor to drive the traction motor. [0004] However, since the electric energy that can be stored by...

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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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