An Original Approach Based on Data Exchange Between Car Manufacturers and Suppliers to Estimate Susceptibility Threshold by Numerical Simulation at Early Design Stage

This study is a result of a close partnership between a car manufacturer and an automotive component supplier. The aim is to develop electromagnetic compatibility models, i.e., immunity models to predict real-world system failure conditions that can occur inside a vehicle. For the study, we selected an interface that manages air-conditioning inside a vehicle recently put on the market. The system model is submitted by an equipment supplier as a compilation of input impedances and threshold transmitted powers causing a malfunction. The predefined model is then used by a car manufacturer on vehicle-level electromagnetic compatibility simulation, by taking into account the harness configuration and the system placement inside the vehicle cab and chassis. In this paper, we detail the complete method and demonstrate its validity.