Complex Analysis of IEMI in Grounding Circuits of Critical Equipment: Preliminary Results

A problem of electromagnetic compatibility is considered. Particularly, intentional electromagnetic interferences (IEMI) are studied. It was chosen to use three main analysis types: circuit, quasi-static, electrodynamic ones, and possibly their hybrids. It was chosen to use a number of impacts: a harmonic one in the frequency domain, a trapezoidal ultra-short pulse, signals of real generators, a dumped sinusoid, and an electrostatic discharge. A wide range of ground types and grounding schemes are considered to be under study, including new structures with modal reservation. Scientific novelty of the research consists, first of all, in the comprehensiveness of the defined above problem, as well as in a wide range of its individual options. Through this study, mathematical models must be created to analyze a variety of IEMI in various grounding circuits. Based on these models, developed algorithms and computer programs must perform simulations over a range of parameters. Available devices and new created prototypes must help for experimental validation of simulation results. Obtained models, algorithms and programs will allow simulating the propagation of IEMI along grounding circuits. This will make it possible to identify vulnerabilities in critical equipment without the additional costs of expensive or even unfeasible tests. In this paper, only first preliminary, but important for following research, results of the complex analysis are highlighted. Particularly, some details of general approaches to perform this analysis are presented, emphasizing on structures to be considered (EMI filter, autonomous navigation system, and structures with modal filtration), features of their simulation, and important preliminary conclusions.