Intelligent railway signal power source switching module

A technology of power switching and railway signaling, which is applied in the direction of emergency power supply arrangements, electrical components, circuit devices, etc., and can solve problems such as contact bonding, interference with driving order, and power failure accidents at signal points
CN1534843AInactive Publication Date: 2004-10-06宁波宝鑫铁路信号设备制造有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
宁波宝鑫铁路信号设备制造有限公司
Publication Date
2004-10-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

An intelligent power supply switching module for the railway signalling can automatically perform the switching between two power supplys when the undervoltage, overvoltage, or phase lost occurs. It is composed of primary circuit, the overvoltage, undervoltage and phase lost detector, switching circuit and drive circuit. Its primary circuit has two input power supplys and a switch circuit consisting of serially or parallelly connected two IGBTs for output. Its advantages are high detecting and switching speed (less than 2 ms).
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Description

technical field

[0001] The invention relates to the technical field of railway traffic management and guaranteeing railway traffic safety, in particular to the technical field of automatic switching of railway signal dual-way power supplies. Background technique

[0002] The intelligent power supply panel for the centralized power supply of Railway Electric is used to provide AC and DC power supplies for signal flashing power supply, track circuit, electric switch machine, centralized dispatching, microcomputer interlocking, relays, consoles and display panels, in order to ensure railway transportation Safety, the external grid power supply must be powered by two power sources, so it is necessary to have a two-way power switching device, which is used to switch to another power supply in a very short time when one power supply fails or when a certain power supply is routinely overhauled To ensure the normal power supply of the smart power panel, the standard switching time e...

Claims

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