Test bench and test system of traction inverter

Abstract

The invention provides a test bench of a traction inverter. The test bench comprises a user terminal, an Ethernet switch, a control case and a main circuit test circuit, wherein the user terminal sends a control instruction to the control case or a DCU case through the Ethernet switch and acquires feedback results of the control case or the DCU case through the Ethernet switch; the Ethernet switch forwards data between the user terminal and the control case and between the user terminal and the DCU case; the control case performs an electrical performance test on the DCU case according to the control instruction sent by the user terminal by the Ethernet switch or triggers the main circuit test circuit to perform the electrical performance test on the main circuit of the traction inverter according to the control instruction sent by the user terminal through the Ethernet switch; and the main circuit test circuit performs the electrical performance test on the main circuit of the traction inverter according to a trigger of the control case and returns the feedback results to the control case. The invention further provides a test system for testing the traction inverter.

Description

technical field [0001] The invention relates to the testing technology of electrical components used in the rail transit field, in particular to the testing technology of traction inverters. Background technique [0002] Traction inverters are high-power electrical components used in motor vehicles, locomotives or subway vehicles. They are mainly used to convert DC voltage into AC voltage to supply power to other components. Taking the traction inverter used in subway vehicles as an example, when the subway vehicle is working normally, the input voltage range is DC1000V~DC2000V, such as DC1500V, and the output voltage range is 0V~AC1400V, where DC means direct current and AC means alternating current . [0003] After the traction inverter is produced, the production unit needs to test the parameters of its control circuit and the function of the main circuit. After the traction inverter is delivered to the operating unit along with the whole vehicle, the operating unit als...

AI Technical Summary

Problems solved by technology

[0005] In practical applications, since the test environment in which the testers are exposed involves high voltage and strong current, the test environment is relatively complicated, which is not conducive to the personal safety of the testers. If high-level protective measures are adopted, the test cost will be increased

Therefore, the above-mentioned test method is not conducive to the personal safety of testers or the test cost is high

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