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Information × Registration Number 0225U003703, (0123U100710) , R & D reports Title Scientific foundations and means of complex design synthesis of integrated induction machines of systems for generating, accumulating and using energy from renewable sources of increased efficiency (code: Aselma-V). popup.stage_title Розробити уточнені математичні моделі асинхронних двигунів як елементів систем генерування, накопичення і використання енергії відновлюваних джерел для урахування особливостей режимів роботи. Head Popovych Oleksandr М., Доктор технічних наук Registration Date 05-08-2025 Organization Institute of Electrodynamics of the National Academy of Sciences of Ukraine popup.description1 Development of mathematical and software tools for improving the efficiency of systems for generating, accumulating and using renewable energy due to the integrated design synthesis of integrated induction motors (IM) of these systems, the implementation of these tools in the development, design and justification of structural and circuit solutions for these electrical machines. popup.description2 In the direction of research on the development of measures and means to increase the useful energy output of renewable energy sources by means of approaches to the design of electromechanical equipment of the system according to a comprehensive efficiency criterion with the definition of optimal structures and modes of energy storage systems, as well as integrated induction machines and systems, the following was performed: 1) A new two-circuit frequency control system for induction electric drives of reciprocating compressors with a static proportional-differential controller in the external speed control loop, which compensates for the nonlinear properties of the control object, and an astatic proportional-integrating controller in the internal current control loop, which reduces the non-sinusoidality of stator currents, was developed; 2) Mathematical and software for the refined accounting of losses in the stator steel of electric generators and AC motors for the study of components of the complex model of frequency-controlled electromechanical systems of renewable energy; 3) For the first time, mathematical and software for the design synthesis of induction machines with powder stator and massive rotors with refined accounting of additional losses based on the results of field analysis; 4) A mathematical model for studying the quasi-steady-state modes of the induction drive of a reciprocating compressor of a refrigeration machine has been developed, which takes into account the change in load moments and inertia on the induction motor shaft in accordance with the kinematic scheme and design parameters, as well as changes in the parameters of the coolant circulation system. Scientific novelty. It has been established that for variable-frequency electric drives of reciprocating compressors, whose load torque depends nonlinearly on the rotor angle, minimising speed fluctuations leads to a decrease in efficiency due to an increase in the non-sinusoidality of curr Product Description popup.authors Bibik Olena V. Holovan Ivan V. Popovych Oleksandr М. Shurub Yurii V. popup.nrat_date 2025-08-05 Close