Design And Dynamic Modelling Of A Low-Speed Electric Generator For Electricity Generation From Renewable Energy Sources
DOI:
https://doi.org/10.62480/tjet.2026.vol57.pp42-48Keywords:
renewable energy, wind energy,, micro-hydropower, permanent-magnet generatorAbstract
The article presents information on the current state and development prospects of renewable energy utilization in the world and in the Republic of Uzbekistan, as well as on the selection of efficient electric generators to ensure the stable operation of wind and micro-hydropower systems under low-flow conditions. The availability of energy resources in the form of low-speed wind flows and low-head irrigation canals across large areas of our region creates opportunities for continuous electricity generation using lowspeed electric generators. Considering that wind and micro-hydropower turbines operating under low-flow conditions are driven at relatively low rotational speeds, a simple-structured multipole electric generator based on permanent magnets has been designed for these systems. In this generator, the stator and rotor rotate in opposite directions relative to each other. SolidWorks was used for the design of the electric generator, while MATLAB/Simulink was employed for simulation modelling and theoretical investigation of its dynamic operating modes. Mathematical relationships describing the variation of the generator's output parameters, including voltage, current, frequency, electromagnetic power, and other characteristics, depending on the geometric dimensions of the generator, the number of permanent magnets, the number of turns in the stator windings and their connection method, as well as the minimum air gap between the rotor and stator, are presented. Based on the results of the conducted research, a 600 W electric generator with oppositely rotating stator and rotor was developed. The generator consists of 32 permanent magnets, with 4 windings in each phase of the stator and 200 turns in each winding. It was determined that when the stator and rotor rotate in opposite directions relative to each other, the electromagnetic torque and electromagnetic power of the generator increase by 20% compared with the operating mode in which the stator remains stationary and only the rotor rotates
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