Development of digital twin of high frequency generator with self-excitation in Simulink

Abstract The article presents the numerical simulation results of the high frequency generator (electron tube type) with self-excitation in the Simulink. The main structural element of this generator is an electron tube GU-66A. Digitization characteristics of the electron tube is made. A mathematical model of the HF generator, taking into account the anode and grid characteristics of GU-66A according to the passport data of the product, has been developed. The parameters of the HF generator circuit are determined. A plasma-chemical reactor and its equivalent electrical parameters (set in a wide range of accepted values) are used as a load oscillation circuit. The developed model allows to determine the optimal parameters of the HF generator, as well as to predict operating modes, providing continuous supply of HF power for a long time (more than 20 hours). The equivalent electrical parameters of the plasma-chemical reactor are designed to ignite plasma discharges in argon and gas mixtures based on argon at atmospheric pressure.