Design of multi-pole permanent magnet synchronous generator for small hydropower generation

Design and Optimization of Permanent Magnet Synchronous Generator for Use in Hydrodynamic Renewable Energy by Applying Aco and Fea

“…Water energy in various forms, including the seas, oceans, rivers, and even fountains, is as an important source of renewable energy. This type of green energy can be harnessed using multiple technologies such as hydrodynamic screw systems in the direction of water flow or water wheel systems [1][2][3][4][5][6][7][8]. In Fig.…”

“…In this way, for each kilowatt hour electrical energy production, about one less kilogram of carbon dioxide contaminates the environment [1]. Being a renewable energy source and causing no pollution for the environment, low maintenance costs, low operating costs and taking advantage of the wasted water resources are among the other advantages of this type of system [1][2][3][4][5][6][7][8]. Depending on the volume of incoming water, the hydrodynamic screw speed is about 30 turns per minute; although by applying the gearbox, generator shaft rotation speed increases to 300 rpm which is still w h h hi i lower, its volume increases.…”

“…According to the above description, the generator that is going to be used in this application should have features such as high efficiency, power density, reliability, and small size and volume. A permanent magnet synchronous generator (PMSG) is one of the best choices with the ability to achieve the above purposes [1,[4][5][6][7][8]. In [1] it was explained that the use of low speed PMSG for small hydropower plants has made the electrical energy generation economical by new production methods.…”

“…Then, a numerical model was established to determine the mechanical efficiency according to its geometrical parameters, rotational speed, and degree of filling. In [7], the design process of a 10 kW multi-pole permanent magnet generator was presented. It is a gearless module type and can be used in small hydro power generation.…”