ANALYSIS OF THE MECHANICAL CHARACTERISTICS OF AN ASYNCHRONOUS MACHINE IN MOTOR-GENERATOR MODES BASED ON THE PARAMETERS OF THE SUBSTITUTION CIRCUIT

Abstract

As is known, in this regard, during the implementation of a number of decrees and resolutions adopted by the President of the Republic and the Cabinet of Ministers in 2024-2026, solar panels were installed at production enterprises in the regions, and micro-hydroelectric power plants were built among budgetary institutions and household consumers. In addition, over the past few years, foreign investors have built and commissioned large wind power plants. As a result, the country's complete dependence on traditional power plants was stopped, and the consumption of electricity produced by thermal power plants was reduced, which ensured significant energy resource savings.   

Studies show that synchronous generators (SG) and asynchronous generators (AG) with phase windings and short-circuited rotors are used in WES and HES generator installations.  Connecting capacitor banks to the stator windings allows for self-starting of the AG in the magnetic core due to its residual magnetization and fulfills requirements such as the stability of the output voltage. The proposed excitation method based on capacitors is decentralized, allowing the generator unit to adapt its operating modes under autonomous power supply conditions. In this article, based on the results of the conducted experiment, oscillograms reflecting the output voltage values in the transient processes of an AG with a 4 kW short-circuited rotor were obtained and analyzed.