Multiphase Hydroelectric Power Plant with a Reconfigurable DC Circuit

Abstract

This article presents the results of an experimental study of a multiphase hydroelectric power plant with a reconfigurable DC circuit, designed for autonomous power supply systems in the absence of centralized power grids and with low water flow potential. The study was conducted in two operating modes with constant power consumption. When simulating normal water flow rates at generator speeds of 500 rpm, three-phase diode bridges were connected in parallel. When simulating reduced water flow rates at generator speeds of 340 rpm, two diode bridges were connected in series. The experimental data confirm the system's ability to stabilize voltage under various water flow conditions, ensuring reliable operation of electrical equipment. It is shown how the rectifier circuit reconfiguration occurs, how voltage and current behave when the water flow rate changes at constant power, and how a stable output voltage of approximately 11.2 V is maintained. Such stability of parameters is particularly important for electric drives and other equipment sensitive to supply voltage deviations. The results demonstrate the feasibility of the system for autonomous power supply applications with low water flow potential. The obtained results provide convincing evidence that the multiphase hydroelectric power plant with a reconfigurable DC circuit is capable of providing reliable and high-quality power supply to remote consumers, reducing dependence on centralized grids and conventional fuels.