地铁车辆辅助变流柜噪声试验研究

Noise test research on auxiliary converter for metro vehicle

为了识别地铁车辆辅助变流器在不同运行工况下的气动噪声和电磁噪声特征以及贡献,通过试验方法对变流柜整机以及其内部2个主要的噪声源部件单体(风机和变压器)进行噪声测试。通过单体测试,分别得到风机和变压器在不同工况下的峰值频率以及对应幅值,为变流柜下一步降噪提供理论依据。

In order to identify the characteristics and contribution of aerodynamic noise and electromagnetic noise of metro vehicle auxiliary converter under different operating conditions,the noise of converter cabinet and its two main components(fan and transformer)are tested.Through single unit test,the peak frequencies and corresponding amplitudes of fan and transformer under different working conditions are obtained,which can provide theoretical basis for the next noise reduction of converter cabinet.