Study on Electromagnetic Compatibility of Fuel Cell System Components

In order to study the mutual interference between fuel cell's components and improve anti-interference ability of sensitive components, a test system for DC/DC converter, Air Compressor Controller (ACC), and FCU controller is established, and radiation emission measurements is conducted. Then, measurement results of DC/DC converter and ACC were used as interference sources, and a simulation model was established. The interference current signals on the DC/DC converter and ACC cables were collected as excitation sources for the simulation model. The impact of two components on the FCU controller was studied. The results showed that the coupling current on the FCU controller cable could exceed 100mA and limit. In addition, the simulation model was used to study the radiation anti-interference characteristics of the FCU controller after adding a cable shielding layer. Under the plane wave interference of 25V/m~100V/m, the induced current on the FCU controller cable was small, which will not affect the normal operation of the FCU controller.