Розробка активної частини асинхронного генератора для вітроустановки малої потужності

The article presents an analysis of the operating characteristics of developed asynchronous generators with a squirrel-cage rotor for low-power wind turbines. For comparison, three samples of 10-, 12-, and 14-pole asynchronous generators are proposed. The development was carried out in the Ansys Maxwell software package, and the operating characteristics were constructed in MATLAB. The use of an asynchronous generator in a low-power wind turbine is dictated by the lower cost of the asynchronous generator and the absence of imported rare materials, such as neodymium magnets. For comparison, operating characteristics were constructed for nominal and reduced frequencies, since the main operating range of the wind turbine is frequencies below the nominal frequency. Particular attention was paid to the characteristics of efficiency and power factor, since the control system of the asynchronous generator will have to be optimized to maximize these parameters in order to achieve maximum energy efficiency of the wind turbine. All developed generators demonstrated their ability to operate and have fairly similar operating characteristics. However, a detailed analysis allowed us to determine the optimal design of an asynchronous generator for use in a low-power wind turbine.