Technology of Using a Combined Excitation Valve Hydrogenerator as an Alternative Source of Energy use for Small Rivers

摘要

Modern energy is developing in the direction of reducing the share of powerful generation sources in the total energy balance and increasing the share of distributed generation of small and medium capacity, in particular alternative sources. In this trend, we should note an increase in the number of small and medium-sized hydroelectric power stations (mini-HPP). This is due to the fact that the energy potential of small and medium-sized rivers in Russia and neighboring countries, according to various estimates, is several times higher than this indicator for large rivers. For effective use of this potential should not go towards the creation of a number of standard mini-hydro, and ways to design systems oriented to flexible production, which made the hydro for site-specific river, given its peculiarities in the parameters of the watercourse and topography. The article presents the results of such research conducted by the authors, in particular, a description of the synthesis subsystem of a combined excitation water-submersible hydrogenerator is given. The subsystem is based on the Ansys Electronics Desktop program and allows for a comprehensive analysis of the electrical machine and its control system. The efficiency of the subsystem is shown on the analysis of the combined excitation generator 3 kW, 220 V, 350 rpm. The created digital double greatly reduces the risks in the production of a real sample. This approach is recommended for the development of design systems of other types and applications.