Reverse starting test method and device for traction system

Abstract

The invention discloses a reverse starting test method and device for a traction system. The method comprises the following steps that: S1, a test accompanying traction system and a to-be-tested traction system are connected with each other, so that the a reverse starting test system is constructed, the test accompanying traction system simulates the load of the to-be-tested traction system; S2, when a test is started, the reverse of the test accompanying traction system is controlled to be started, and the test accompanying traction system is controlled to operate according to control parameters calculated according to operation conditions required by the test; S3, when the test accompanying traction system operates under a specified operation working condition, the to-be-tested tractionsystem is started, a forward torque is applied onto the to-be-tested traction system, and the to-be-tested traction system and the test accompanying traction system are controlled to realize reverse twin trawling according to the torque direction of the test accompanying traction system, so that a vehicle reverse starting working condition can be simulated; and S4, the operation states of the to-be-tested traction system and the test accompanying traction system are monitored, a test result is judged. The method has the advantages of simple test operation, low implementation cost, high test reliability, good test performance and the like.

Description

technical field [0001] The invention relates to the technical field of electric drive vehicle testing, in particular to a test method and device for reverse start of a traction system of an electric drive vehicle. Background technique [0002] The reverse starting (starting) test is mainly to assess the starting ability of the traction system of the vehicles (including electric locomotives, EMUs, urban rail vehicles, mine vehicles, electric buses and electric cars, etc.) in the field of electric transmission during the process of rolling backwards. . At present, to verify the reverse starting performance of the above-mentioned traction system of the vehicle in the field of electric transmission, the test method is usually: first apply the parking brake on the vehicle, that is, after the vehicle stops, in order to prevent the vehicle from moving unintentionally, use the brake shoe to hold the vehicle wheel set tightly; Park the vehicle on the required slope, and then apply t...

AI Technical Summary

Problems solved by technology

However, the above-mentioned test method can only be carried out after the traction system is assembled into the vehicle, and the entire vehicle is assembled on the slope of the actual running line, and cannot be verified during the joint debugging test of the ground traction system. The test cost is high and the test operation is complicated. It is not convenient to adjust in time when the test fails

[0003] In order to realize the test simulation of the reverse start performance of the traction drive system in the electric drive vehicle, the IEC 61377 standard stipulates that the reverse start test is carried out on the test bench to simulate the starting function of the vehicle with a specific load on a specific slope route. The traction system under test needs to be converted from reverse start to forward start under full torque conditions, but there is no effective solution that can meet the IEC 61377 standard to achieve efficient and reliable reverse start tests

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