Abstract
Issues of developing the step-down converter with voltage stabilization for the electric power plant based on fuel elements have been considered. Three options of the power unit implementation are offered: classic step-down converter, mixing circuit on “ideal diodes” and circuit with stage switching. Advantages and disadvantages of the circuits offered are described. The most suitable converter structure with the stabilization circuit is selected. The method of the electric power plant optimization according to the unmanned aerial vehicle maximum flight time has been specified. Design calculation of the power circuit is carried out, numerical model of the device in LTspice software set is proposed. Numerical simulation of the main converter operation modes has been carried out, its characteristics and requirements to the element base obtained. The test sample experimental studies that have been carried out confirmed its efficiency, adequacy of the methods of design calculation and simulation of converter operation modes.
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