A converter module testing device and method thereof
A technology for module testing and converters, which is applied in the field of testing devices for converter modules, can solve problems that are not involved in inverter module testing, such as complexity, and achieve the effects of reducing test costs and test space and improving safety
Active Publication Date: 2011-12-21
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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Problems solved by technology
According to this technical solution, it is also necessary to build a complex test environment, and it does not involve individual module tests inside the inverter
Method used
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[0050] Such as image 3 A specific implementation of the shown method for testing a converter module includes the following steps:
[0051] S101: Electrically connect the converter module testing device 1 to the converter module 11;
[0052] S102: Start the converter module test device 1, close the charging contactor KM1, and start charging the capacitor C1;
[0053] S103: Read the value of the voltage sensor VH1 and compare it with the preset value. If the value of the voltage sensor VH1 exceeds the preset value, it means that the charging is completed and the next step can be performed, otherwise continue charging;
[0054] S104: Turn on one of the upper switch tubes, read the values of voltage sensor VH1 and current sensors LH1, LH2, LH3, LH4, if the values of voltage sensor VH1 and current sensors LH1, LH2, LH3, LH4 are not within the preset range, it means One or more of the lower switching tubes have a short circuit, if the values of the voltage sensor VH1 and th...
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The invention discloses a current transformer module testing device and a current transformer module testing method. A power supply unit is connected with a charging and discharging circuit unit; the charging and discharging circuit unit is connected with an input port of the current transformer module; a power supply unit of the current transformer module testing device supplies power to a current transformer module; a pulse control unit is connected with an input control port of the current transformer module; a pulse signal is provided for the current transformer module by the pulse control unit of the current transformer module testing device and serves as a switch control signal; a resistor loading unit is connected with an output port of the current transformer module; the resistor loading unit is provided by the current transformer module testing device to serve as an external load of the current transformer module; and a sensor detection unit comprising a voltage sensor and a current voltage sensor is arranged in a power supply loop and a load loop to monitor a state. By the device and the method, the volume of the traditional current transformer module testing device can be effectively reduced, the cost is reduced, and the safety of a test environment is obviously improved.
Description
technical field [0001] The present invention relates to a converter module testing device and its method, in particular to a small-volume, low-cost testing device and its method for converter modules of locomotives, bullet trains, high-speed trains and subway vehicles, and can also be applied to Converter module testing during the maintenance of motor cars, locomotives or vehicles. Background technique [0002] A converter is a power supply device that converts direct current (DC) or alternating current (AC) into alternating current (AC) or direct current (DC) that meets demand. It can be divided into inverters, DC-DC switching power supplies, etc., and its circuit structure generally includes converter modules, control units, etc. Converters include main traction inverters, auxiliary inverters, etc., which are high-power electrical equipment used in locomotives, bullet trains, high-speed rail, and subway vehicles. The interior of the converter generally includes a control...
Claims
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IPC IPC(8): G01R31/40
Inventor 李小文刘伟良苏理陈明奎羊利芬余长超
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD