An EMC safety assessment model to analyze complex system in high speed railways

This paper presents a safety assessment model with regard to electromagnetic compatibility (EMC) fault suitable for estimating the EMC failure probability (EMC FP) of the complex system facing uncertain electromagnetic environment. First, the model is successfully applied to decompose the complex system into different independent subsystem and equipment. Then the practical EMI scenario is modeled as different typical EMC problem, such as the Plane Wave Coupling and Crosstalk respectively. After that the fault tree analysis (FTA) is proposed to use in combination with electromagnetic topology (EMT) calculating the EMC FP of the system. A focus is put on the practical case of the Desktop Management Interface (DMI) system. In this context, a system-level EMC safety assessment model has been applied to solve EMC FP by uncertainty analysis in high speed railways with the complex electromagnetic environment.