Electomagnetic compatibility Co-simulation Of Complex Electrical Systems – ECOCES

The increasing number of power electronics devices in an automobile and their impact on the vehicle's electrical network impose increasingly stringent constraints in terms of reliability and safety. Car manufacturers are now faced with two major concerns: they must ensure compliance with standards limiting spurious emissions from the car and respect for the exposure of people to electromagnetic fields (EM) within the vehicle and they must guarantee the proper functioning of all equipment in a normally polluted EM environment. The stakes in the vehicles of tomorrow go beyond these aspects through the vulnerability to EM aggressions of autonomous driving systems. Indeed, wiring and I / O are all possible input vectors for disturbances to malfunction of the guidance or for eavesdropping to spy on the condition of the vehicle.
It is therefore essential to know how to install these new equipments without risk to their immediate environment and to master the devices allowing their protection. The electromagnetic compatibility (EMC) between the equipment is ensured on the one hand by means of installation rules designed to minimize the coupling with the power circuits, but also by the obligation that these equipments have to comply with standards that limit Radio Frequency interference emissions and make the systems robust to external aggression. This is why the EMC study of a vehicle must today be an integral part of the development of a vehicle and must intervene at the beginning of the design phase of the vehicle. This would provide a significant competitive advantage in view of lower costs and development time. We can also mention the possibility of normative constraints that may be more restrictive and thus help to preserve the markets of less well designed and riskier devices. The determination of the EM performance of complex systems of current and future vehicles is the main obstacle to the deployment of new technologies (guidance, electric propulsion ...). All project partners aim to overcome this blocking point.
EMC optimization of complex systems such as a complete vehicle therefore requires the development of sophisticated modeling methodologies. Consequently, it is fundamental to prepare this technological evolution and to propose simulation approaches dedicated to complex systems.
System-oriented modeling has improved considerably over the last twenty years, both in the fineness of description of electric and electromagnetic models and in the available computing power. However, the direct use of existing tools for the analysis of a large system, taking into account the strong interaction between subsystems, has not progressed.
It is therefore imperative to exchange the different models of the subsets because no method will allow a complete modeling of an industrial system. The cornerstone of the approach proposed in this project is to implement a network co-simulation methodology in order to mobilize simultaneously and distributed the set of parcel models necessary for a complete system modeling. In this approach the different models are neither shared between partners nor integrated into a single tool but communicate in real time through their interfaces. To achieve such a co-simulation it is obviously essential to remove certain locks relating to the models relevant to the different subsets, but it is also essential to make these different elementary bricks coexist and communicate in the same simulation through exchange of relevant data.