Analysis of EMI on Cab Integrated Radio communication equipment

When working, the pantograph-catenary arcs produce electromagnetic emission interference to the EMU's (Electrical Multiple Unit) Cab Integrated Radio communication equipment (CIR). The system may become disabled, thus causing dangerous situation. In search of effective measures for interference suppression, firstly, the mechanism of arcs and the configuration of CIR are described. Secondly, further analysis is made for the disturbance pattern and coupling path of arcs. Conclusively, the method for interference analyzing is acquired, based on tests, the amplitude is calculated as well. In addition, general measure for depressing the interference is also given.