Vibration Test and Analysis of the Traction Converter of Alpine Electric Multiple Units
In view of the problem that bad weather and aging lines in Northwest China affect the safe and reliable operation of alpine electric multiple units,the vibration test and analysis of actual line operation are carried out.According to the train operating speed and topographic characteristics of the line from Jimo to Urumqi,the line is divided into four sections,such as Qingdao-Jinan,Jinan-Xi'an,Xi'an-Lanzhou and Lanzhou-Urumqi.The vibration effective values of different sections are compared and analyzed.According to IEC 61373 standard,the differences of measured vibration effective values,shock peak values and standard values are compared and analyzed.The vibration characteristics of different parts of the traction converter are analyzed through the vibration spectrum.The measured load spectrum of different parts is compiled by means of the statistical tolerance method.And the influence of medium and high frequency vibration on the structure of the traction converter is analyzed by means of the finite element method.The results show that the vibration of Jinan-Xi'an section is higher than that of the other sections,and the shock of Xi'an-Lanzhou section is higher than that of the other sections.The vibration of the lifting lug of the cabinet and the control cabinet is mainly reflected in the vertical and longitudinal directions,while the horizontal vibration is small,and mainly in the medium and low frequency band.The vibration of the cooling fan is concentrated in the low frequency band,which comes from the rotation frequency of the fan.The vibration of power module is mainly in the transverse and longitudinal directions,and the vibration in the medium and high frequency band is much greater than that in the low frequency band.
vibration and wavealpine electric multiple unitstraction converterlinevibration testload spectrum
万方数据
维普
