Integrated program-controlled power supply for testing high-power inverter circuit of metro vehicle

Abstract

The invention provides an integrated program-controlled power supply for testing a high-power inverter circuit of a metro vehicle. The integrated program-controlled power supply is composed of a maincircuit, a sampling circuit, a protection discharging circuit and a control circuit. The main circuit regulates a voltage of a power incoming line to be a needed voltage and rectification and filtering are carried out. The protection discharging circuit is connected to the main circuit. The sampling circuit collects an input voltage signal and an output voltage signal of the main circuit and a contactor contact signal of the protection discharging circuit and inputs the signals into the control circuit. The control circuit connected with the main circuit and the protection discharging circuitcontrols the circuit and the protection discharging circuit according to the obtained input voltage signal, output voltage signal, and contactor contact signal. According to the invention, integrationof the whole equipment is realized, so that the occupied area is reduced and thus equipment and personal safety problems during the test are solved; the operation steps are simplified and the outputvoltage is controlled remotely by the network; and the test output is the reduced pulse, so that the power supply quality is improved.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to an integrated program-controlled power supply for testing high-power inverter circuits of subway vehicles. Background technique [0002] At present, the power module high-power test power supply used in subway vehicles has the disadvantages of too many split components, large floor space, and weak personal protection measures. In particular, the steps during start-up are complicated and require too much memory of the operator's steps, and the "one-key" preset start cannot be achieved, which will bring hidden dangers of misoperation in the later stage; due to lack of safety protection measures, only The manual warning bar is used to solve the problem of personal safety caused by the wrong entry of personnel in extreme cases; the test power supply is split, so the floor area is too large, occupying the actual module test area; the discharge time is manual, and the time It i...

AI Technical Summary

Problems solved by technology

[0002] At present, the high-power test power supply of power modules used in subway vehicles has the disadvantages of too many split components, large floor space, and weak personal protection measures.

In particular, the steps during start-up are complicated and require too much memory of the operator's steps, and the "one-key" preset start cannot be achieved, which will bring hidden dangers of misoperation in the later stage; due to lack of safety protection measures, only The manual warning bar is used to solve the problem of personal safety caused by the wrong entry of personnel in extreme cases; the test power supply is split, so the floor area is too large, occupying the actual module test area; the discharge time is manual, and the time Too long, unable to achieve "start-stop" automation; the test output is pulsating 6 waves, and the ripple coefficient is large

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