Ensuring electromagnetic safety at high-speed maglev transport

Abstract

High-speed ground maglev transport creates electromagnetic interference of wide frequency spectrum during the movement. Electromagnetic interference spreads both in the surrounding environment and within the transport itself. Mathematically, electromagnetic interference is a vector (and in some cases tensor) field, where the functions are magnetic and electrical tenseness. Purpose. The purpose of the work is to ensure electromagnetic safety of high-speed ground maglev transport’s technical means and people (passengers and staff) by means of optimisation synthesis. Objective. The objective of the works is to optimise the placement of field sources in areas with variable geometric characteristics. Methodology. The method of the work is to synthesise elements of an energy system whose characteristics depend on the behaviour of electromagnetic interference. The mathematical model of the energy system being designed should take into account technological and constructive constraints, and electromagnetic interference. Calculation of electromagnetic interference from several sources in the premises, where the energy system is located by means of solving nonlinear tasks of special type mathematical programming. The peculiarities of this type of problems do not allow using known methods of mathematical programming. Finally, methods of formalisation and algorithms for solving optimisation problems of placement. Practical significance. The search of solution of optimisation tasks became feasible owing to a number of suggestions put forward by the author: introduction of scalar potentials for describing external electromagnetic interference of the electric power plant elements; the introduction of interinfluence taking into account the influence of closely-located sources; development of screening functions in the form of harmonic decompositions; the application of addition theorems which enable describing solutions of mathematical physics equations in different coordinate systems. Conclusion. The suggested method of formation of maglev transport electric energy system may be useful.