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| Random Vibration Acceleration Test Method of CI Cabinet Based on FDS |
| Received:April 20, 2021 Revised:May 11, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2021.09.017 |
| KeyWord:traction converter super-Gaussian random vibration FDS accelerated test |
| Author | Institution |
| QIN Wei |
Zhuzhou CRRC Times Electric Co.,Ltd., Zhuzhou , China |
| WANG Peng |
Zhuzhou CRRC Times Electric Co.,Ltd., Zhuzhou , China |
| LIU Yue |
Zhuzhou CRRC Times Electric Co.,Ltd., Zhuzhou , China |
| TANG Zi-di |
Zhuzhou CRRC Times Electric Co.,Ltd., Zhuzhou , China |
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| Abstract: |
| In order to more realistically simulate the super-Gaussian vibration environment of the traction converter (CI) cabinet in the laboratory. Based on the equivalent fatigue damage principle of fatigue damage spectrum (FDS), the acceleration method of vibration test for the cabinet was studied based on super-Gaussian signal. The concept of fatigue load spectrum and its calculation method were proposed, and then the FDS of the collected stationary super-Gaussian acceleration signal was calculated based on the time domain method. Then it was converted into the acceleration power spectral density used for the shaking table test, and the random vibration acceleration test was performed on the CI cabinet. On the basis of consistent with the original damage equivalent, the vibration test on the CI cabinet was completed without any fatigue failure. Compared with the traditional Gaussian vibration test, although the same accelerated test time is selected, the test method can more accurately reflect the super-Gaussian vibration environment borne by the CI cabinet, and further accurately test the durability of the product. |
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