Low - speed generator with permanent magnets and additional windings in the rotor for small power wind plants and micro hydro power plants

Abstract

Abstract Recently due to the worldwide population grows much attention has been paid to increasing total electricity generation. However, traditional power plants, which are used hydrocarbon fuels, cause one of the challenging problems like environmental contamination and global warming in the world. In this case, renewable or alternative energy sources can be a promising replacement for traditional hydrocarbon fuels. Uzbekistan has lots of small rivers and water reservoirs and the use of these potentials in the perspective to generate power it is a unique decision of the problem. Usually in small power plants use low-speed generators and efficiency of these type generators are very low. Hence, the main objective of this study is to increase the efficiency of the low power generator by improving and optimizing the specifications and parameters of the low power generators. The use of low-speed generators with permanent magnet excitation for micro-hydroelectric power plants and wind turbines is relevant in terms of providing good weight and size indicators, simplicity of construction, lack of sliding contacts, with the ability to perform a generator of low rotation speeds, which causes low cost and high reliability. In this study, the natures of the influence of the main geometric dimensions of the mass-dimensional parameters and the air gap on the energy indicators of the generator are estimated. Theoretical and experimental research results are submitted.