Development of a Water-Submersible Hydrogenerator as a Renewable Source of Electricity for Small Rivers

The problem of using hydroelectric power of small rivers is considered. It is shown that it can be resolved only in the design of electric generators for locations and operating conditions. The task of developing such a project system is set. The problem of choosing a turbine and the type of electric machine for a hydrogenerator is outlined. Among a large number of types of generators, it is proposed to use a generator of the original design as a hydrogenerator of low and medium power. The electric machine in question is a submersible type generator with combined excitation. The resulting magnetic field of the generator is formed from two sources: permanent magnets and the field winding. At the same time, the hydrogenerator has a small size, thanks to the use of powerful permanent magnets, and the coil of the excitation for regulating the magnetic flow. At the final stage, a decision was made to develop a three-dimensional model of the generator in the Solid Works program. In order to make sure that the design system works correctly, it was decided to make a scale model using 3D printer technology.