AC Voltage Stabilizer for Overload and Overvoltage in Low-Voltage Networks

The trends in the development of the modern world of electricity consumption in the industrial and residential sectors are in the using of cheap and uninterrupted power supply. The necessity for regulation, stabilization, improvement of the quality of AC voltage is relevant for all AC networks and especially for rural networks under uneven distribution of consumers. This paper presents an analysis of the structural diagram, a description of the principles of operation and a mathematical calculation of the electrical processes of the AC voltage regulator, as well as simulation modeling in MatLab / Simulink The proposed AC voltage converter is a transformerless one. By adjusting the output voltage level, it is possible to achieve stabilization of the load voltage when the supply network deviates from the standards of GOST, as well as to compensate for reactive power and improve electromagnetic compatibility. Open-loop and closed-loop control algorithms for the converter have been developed.