机车变流器内循环风机电路的共模电压抑制研究

Research on Common-mode Voltage Inhibition for Locomotive Converter Internal Recycle Fan Circuit System

为了降低机车变流器内循环风机供电电源电路接地电压,以减小风机共模电压故障,文章分析了风机电源主电路共模回路及对地共模干扰对风机的影响,提出了抑制风机电源共模电压的有效方法,并通过仿真及试验验证了该抑制方法的有效性。

To reduce the grounding voltage of internal circulating fan power supply circuit in locomotive converter and the incidence of ventilator fault, this paper analyzed the common mode circuit of power supply main circuit and the effects of ground common mode interference on the fan, and proposed methods to suppress the common mode voltage in the fan power supply circuit. Effectiveness of the suppression methods was verified by simulation and experiment results.