Mutual influence of currents in a flat inductor system with solenoid between two massive conductors

Introduction. Inductor systems, as tools for metal processing, are widely used in industrial technologies using the energy of powerful pulsed electromagnetic fields. Problem. A common disadvantage of the known works on the creation of tools for magnetic-pulse impact on conductive objects is the use physical and mathematical models, in which the exciting currents do not depend on the ongoing electromagnetic processes. Such the assumption distorts the picture of the real energy in the working area of the inductor system. Goal. To obtain design relationships and numerical estimations of the mutual influence of exciting and induced currents of a flat inductor system with a circular solenoid located between massive well-conducting objects, moreover to carry out a theoretical analysis of electromagnetic processes in this system. Methodology. Applied integrating Maxwell equations using the Laplace and Fourier-Bessel integral transforms in the approximation of the ideal conductivity of the metal objects to be processed. Results. The calculated relationships for the theoretical analysis of electromagnetic processes are obtained in the high-frequency approximation. It is shown that the inductance of the studied system decreases as the objects being processed approach the solenoid and increases as they move away from it. It is found that for the invariability of the power indicators, of the proposed tool, a corresponding correction of the amplitude (on average up to 20 times) of the exciting current is necessary in the solenoid winding. Originality. For the first time, the tool design with a circular solenoid located between the massive metal objects is proposed for flat magnetic-pulse stamping. As a result of the theoretical analysis, the influence of electromagnetic processes on the currents flowing in the system is confirmed. Practical significance. The use of the results obtained will allow to increase the efficiency of the tool of magnetic- pulse technologies, and to reduce the energy costs for performing the specified production operations. References 19, figures 2. Key words: magnetic-pulse stamping, sheet metals, electromagnetic fields, inductor systems, circular solenoid, massive conductor.