Investigation of the Excitation System of a Resonant Transformer
The high-frequency resonant transformer has become widespread as a tool for finding damage sites for high-voltage cable products, suspended and support insulators, in plasma physics research and in medical physiotherapy equipment. The article substantiates the relevance of theoretical studies of switching processes in power circuits of controlled electric energy converters. The replacement scheme of a MOSFET power circuit with an active-inductive load is considered. Mathematical and simulation models of MOSFET type 20NM60 have been developed. A laboratory stand for the study of dynamic characteristics in the excitation circuit of a resonant transformer is described. Comparative results of theoretical and experimental studies of the dynamic characteristics of electromagnetic processes in the excitation circuit are presented. The results obtained confirm the need to take into account the dynamic characteristics of semiconductor switching elements in the inductor circuit when analyzing the operation and calculating resonant transformers.