Lobko A. Energy-saving semiconductor converters for perspective power systems

Objective of the research: the process of converting electric energy in resonant converters with phase control method. The aim of the study: creating energy efficient semiconductor resonant converter with phase control method for perspective power systems. Methods of the research: theory of electrical circuits, numerical solution methods of differential and algebraic equations; method of harmonic analysis, simulation and physical modeling. Theoretical and practical results: it was given a set of recommendations to determine the main parameters; developed recommendations to maintain soft switching; there were protection actions in emergency modes; it was developed converter control algorithm; developed a prototype of the converter included in the program of the discipline. Scientific novelty: it was offered resonant converter with phase control method with best efficiency; for the first time substantiated using of phase control method of reversible resonant soft-switching converters at the fundamental frequency; it was offered a linear dynamic model of converter with resonance-phase control method; simulation models of converters; experimentally determined range of sectioning of the serial filters inductor and capacitor of reactive power compensation. Implementation level: in the educational process at the department of industrial and biomedical electronics in NTU "KhPI". Scope of applicability: power supply systems, the educational process.