A Statistical Model of Noises at Input Port of Inverter and its Coupling to Low Voltage Cable on Fuel Cell Bus

Hybrid electric Bus has serious EMC problems. Normal distribution is proved suitable to describe the noise fluctuation on input port of inverter. Typical noise patterns are summarized with seven key parameters. Then crosstalk between power cables and nearby signal cables is analyzed with injection of these typical noises. Time parameters of noises are observed can influence the crosstalk significantly. It is concluded that update should be made in the present standards of conducted emission limitation on vehicle due to their neglect of the time parameters of noise sources.