The article discusses the issues of controlling a pulse voltage stabilizer, which has the potential to provide high specific characteristics, efficiency and quality of the output voltage. It is shown that it is advisable to use a digital computing device to control this stabilizer. The oscillograms of the processes in the layout of a pulse voltage stabilizer with a digital control device are presented and an intermediate conclusion is made about an increase in the duration of transients in the stabilizer layout in comparison with the minimum possible due to the lack of time required to accurately calculate the duration of the control signals of the stabilizer's power transistors. It is proposed to calculate in advance the necessary durations of the control signals of the stabilizer's power transistors with a step-by-step change in the external operating conditions of the stabilizer and to store the results in the memory of the digital control device. The time diagrams of processes in the stabilizer simulation model are presented, in which control is implemented according to the proposed option.

Keywords: autonomous power supply system, digital twin, pulse voltage stabilizer, digital computing device

The article examines the problem of power supply of low-power devices remote from stationary power sources. The structural solutions of autonomous power supply systems of high and low power, which use renewable energy sources, are considered. It is shown that in autonomous micro and low-power power supply systems, MPPT-type controllers do not provide technical and economic advantages compared to controllers in which, due to simple structural and circuit design solutions, the necessary but sufficient minimum of functions for charging and discharging the energy storage of the power supply system is implemented. The models of circuit solutions of the controller nodes are presented, which implement the necessary minimum of functions for charging and discharging the energy storage device and the results of experimental studies showing the operability of the proposed circuit solutions.

Keywords: power supply system, controller, renewable energy source, pulse voltage converter, battery, voltage limiter