Field Measurements and Analyses of Traction Motor Noise of Medium and Low Speed Maglev Train

Fengyu Ou, Xiaokang Liao (), Cai Yi and Jianhui Lin
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Fengyu Ou: School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China
Xiaokang Liao: School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611730, China
Cai Yi: State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China
Jianhui Lin: State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China

Energies, 2022, vol. 15, issue 23, 1-10

Abstract: In order to reduce the impact of noise on the environment and reduce the dissipation of useless energy of traction motors, this study analyzed the noise of a traction motor by detecting the vibration acceleration of the suspension frame. Field tests were conducted to measure the traction noise and suspension frame vibration in a commercially operational medium- and low-speed maglev train. The tests showed that as the train accelerates, the sound pressure grows overall, but the increase becomes smaller at each test speed. The speed of the maglev train is closely correlated with the vibrations of the suspension frame in lateral/vertical directions. The dominant frequency of traction motor noise is basically consistent with that of suspension frame vibration acceleration, showing that the suspension frame vibration is the main reason for high-frequency noise in the operation of low–medium-speed maglev trains.

Keywords: field measurement; traction motor noise; suspension frame vibration; dominant frequency (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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