Kochetkov O. Multiphase switched-mode modular step-down DC-DC converters with a boundary mode of conversion

The Object - electrical and energy processes in multiphase pulse DC converter module structure down type with the boundary mode operation. Subject of research - Multiphase Switching Converters DC step-down type with the boundary mode operation. Research methods - To conduct research in the thesis used methods of the theory of electrical circuits, the method of analysis of electrical processes of pulsed DC converters based on choosing as base - the parameters of the current cumulative throttle - to develop mathematical correlations to determine the main parameters of electric processes and quality converters methods of mathematical modeling of electrical processes, methods of digital simulation - in the development of algorithms and software, as well as doing research converters. Theoretical and practical results: systemized mathematical model of the electrical, energy processes, quality indicators down voltage converters such as the modular structure at the boundary mode operation. These relations are organized by the type of practical problems, easy to use and provide the necessary accuracy of calculations. It was further developed method for the analysis of electrical processes in input and output circuit of the inverter, based on the decomposition of the total electric power converter into groups depending on the storage or return of electrical energy. The effect of the transformation ratio of the throttle on the parameters of the electrical processes in the channels of power converters modular structure. It was found that the choice of the transformation ratio of the power throttle channel to optimize the conversion process in the direction of reducing losses in the conversion. This qualitative characteristics of the throttle effect of the transformation ratio of the power channel to the amount of power loss in the power components of the converter. The research is a scientific basis for the creation of pulse voltage converters with improved technical and economic characteristics; The results obtained are reflected in the materials research and implemented in the educational process at the Department of the theory of electrical circuits and the power of the Odessa National Academy of Telecommunications. A.S. Popov, as evidenced by the introduction of the relevant acts. The results obtained were used to develop devices uninterruptible power supply devices for special purposes of the State Enterprise "Scientific Center for Precision Engineering" of the State Space Agency of Ukraine, as well as the development of UPS units, security systems enterprise "Gopher CORPORATION", as evidenced by the introduction of regulations.