Design method of intelligent power supply electronic converter of general-type railway signal lamp

Abstract

The invention discloses a design method of an intelligent power supply electronic converter of a general-type railway signal lamp; a converter is connected in series between a current relay in a central control room and a railway signal lamp; an electro magnetic compatibility with three-stage series surge protection function, main and auxiliary power supplies, an active power factor correction circuit, an off-line DC-DC, a signal processing circuit of which the periphery is connected with all sorts of detection circuits and a state output control circuit are connected to form the intelligent power supply electronic converter. The design method adopts surge protection, a switch power supply, a microcontroller, signal collection and processing and other technologies, and has the advantages that installation and line connection are simple, without the limitation of installation distance; the power voltage provided for the railway signal lamp is constant, the total transfer efficiency is greater than or equal to 80%; the design method specially provides a new-type LED railway signal lamp with power and the old-type railway signal lamp can be directly used by internal installation without change of the optical system of the old-type railway signal lamp.

Description

technical field [0001] The invention relates to a railway signal lamp, in particular to a power supply for driving and controlling the railway signal lamp in an intelligent manner. Background technique [0002] The traditional railway signal light power supply scheme is to input the AC power from the central control room through the AC180V or AC220V interface of the railway signal light industrial frequency power transformer, and then select the appropriate output voltage from the three outputs of AC13V, AC14V and AC16V to drive the railway signal light. With the development of railway-related technologies and the continuous improvement of energy-saving and environmental protection requirements, the traditional railway signal light power supply has defects, mainly as follows: (1) The conversion efficiency of the power frequency transformer is too low, usually only 30% to 60%. (2) The power frequency transformer power supply scheme is easily affected by the instability of the...

AI Technical Summary

Problems solved by technology

With the development of railway-related technologies and the continuous improvement of energy-saving and environmental protection requirements, the traditional railway signal light power supply has defects, mainly as follows: (1) The conversion efficiency of the power frequency transformer is too low, usually only 30% to 60%

(2) The power frequency transformer power supply scheme is easily affected by the instability of the grid voltage or the voltage waveform is disturbed and distorted, which seriously affects the luminous intensity and life of the signal lamp

(3) The installation and connection of the power frequency transformer power supply scheme is greatly affected by the distance, and the connection methods are different for different installation distances

(4) In the scheme of power frequency transformer power supply driving new LED railway signal lights, it is easy to cause malfunction of LED railway signal lights due to railway electrification interference

Images