[Objective] In the actual operation process, the noise generated by medium-low speed maglev trains is a key factor affecting the quality of train service. Therefore, it is necessary to analyze the noise in medium-low speed maglev trains. [Method] The testing scheme for noise in medium-low speed maglev trains is introduced. Taking a certain medium-low speed maglev vehicle as example, the train maglev noise, suspension frame vibration, and linear motor current under train typical operating conditions are analyzed, and corresponding noise reduction measures are proposed. [Result & Conclusion] The noise frequency at 9# motor measuring point is mainly concentrated in the low-frequency band below 50 Hz, with significant noise at 1000 Hz and its multiplications. The vertical vibration acceleration of the suspension frame is mainly concentrated between 0 to 1.5 g (g as gravitational acceleration), and the vertical acceleration during braking is significantly higher than that during acceleration. The high-frequency vibration component of the suspension frame vertical acceleration is mainly concentrated at 1 000 Hz and its multiplications. The harmonic electromagnetic excitation force caused by the 1 000 Hz harmonic current leads to electromagnetic excitation of vehicle bottom mechanical structure, resulting in high-frequency noise from the maglev train bottom. Noise reduction measures such as adjusting switching frequencies and installing filters can effectively reduce the operating noise of medium-low speed maglev trains.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Research and Analysis of Medium-low Speed Maglev Train Noise


    Beteiligte:
    Yinghua LI (Autor:in) / Jun YANG (Autor:in) / Ming GAO (Autor:in) / Xiaokang LIAO (Autor:in) / Fengyu OU (Autor:in)


    Erscheinungsdatum :

    2024




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt




    Medium-low-speed maglev train traction device and medium-low-speed maglev train

    YUAN XIANZHEN / XIN BENYU / FAN ZHUXIA et al. | Europäisches Patentamt | 2020

    Freier Zugriff

    High-speed maglev train speed measurement sensor and maglev train

    LYU YANG / HU ZHONGZHONG / ZHENG LIANGGUANG et al. | Europäisches Patentamt | 2020

    Freier Zugriff

    Ultrahigh-speed maglev train window and ultrahigh-speed maglev train

    ZHAI MAOCHUN / XIAO GUOFANG / ZHANG YANQING et al. | Europäisches Patentamt | 2024

    Freier Zugriff

    High-speed maglev train propelling device and high-speed maglev train

    FAN ZHUXIA / XIN BENYU / YUAN XIANZHEN et al. | Europäisches Patentamt | 2020

    Freier Zugriff

    Research on the gauges of low-medium speed maglev train

    Shao, Nan / Si, Zhiqiang / Shen, Wenlin et al. | SPIE | 2022