Railway signal UPS system based on fuel cell

A fuel cell system and fuel cell technology, applied in the direction of fuel cells, fuel cell additives, circuits, etc., can solve the limitations of sustainable power supply time that is difficult to overcome, the discharge control of lead-acid batteries is difficult, and the battery failure cannot be self-tested, etc. problems, to achieve the effect of reducing the volume of the hydrogen storage system, extending the power supply time indefinitely, and improving reliability and maintainability
CN110970990APending Publication Date: 2020-04-07SHANGHAI RAILWAY COMM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI RAILWAY COMM
Publication Date
2020-04-07

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Abstract

The invention relates to a railway signal UPS system based on a fuel cell. The system is arranged between mains supply input and alternating current output and comprises a main loop power supply unit,a bypass power supply unit and a standby power supply unit, the bypass power supply unit is connected with the main loop power supply unit in parallel, and the main loop power supply unit comprises an AC / DC rectifying device, a DC / AC inversion device and an inversion control switch which are connected in sequence; and the standby power supply unit comprises an auxiliary battery, a DC / DC converterand a fuel cell system. The output end of the auxiliary battery and the output end of the fuel cell system are connected with the input end of the DC / AC inversion device through the DC / DC converter.The system further comprises a UPS control unit, and the UPS control unit is connected with the main loop power supply unit, the bypass power supply unit and the standby power supply unit. Compared with the prior art, the metal hydride hydrogen storage and fuel cell technology is used, innovation of the railway signal system power supply technology is improved, and the system is more efficient, clean and environmentally friendly.
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Description

technical field

[0001] The invention relates to the technical field of uninterruptible power supply, in particular to a fuel cell-based railway signal UPS system. Background technique

[0002] Railway signaling system UPS (Uninterruptible Power Supply), as one of the railway electrification equipment, is widely used in the electrical equipment rooms and relay stations of various railway stations, mainly to provide uninterrupted high-quality power supply services for interlocking agencies and dispatching command management information systems. When "power pollution" and power outages such as power surges, instantaneous high voltage, instantaneous low voltage, and frequency deviation occur in railway power supply, UPS can well improve and ensure the quality of power supply, and provide high-quality power supply for railway equipment.

[0003] In order to ensure that the railway signal UPS system provides continuous power supply when the external mains power is cut off, there m...

Claims

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