Development of mathematical models of energy conversion processes in an induction motor supplied from an autonomous induction generator with parametric non-symmetry

Authors

DOI:

https://doi.org/10.15587/1729-4061.2021.239146

Keywords:

induction generator, induction motor, mathematical model, hodograph, thermal model, regression analysis

Abstract

The paper presents studies of the system "induction generator-induction motor" with parametric asymmetry on a mathematical model to determine the quality of generated electricity in load operating modes. A mathematical model of the "induction generator-induction motor" system has been developed taking into account losses in steel and parametric asymmetry. The analysis of the transient characteristics of an induction generator when a motor load is connected in symmetrical and asymmetrical modes of operation is carried out. The results of changes in the main characteristics of an induction motor at various degrees of parametric asymmetry in the generator are presented. The quality of the generated electricity was analyzed based on the calculations of the unbalance coefficients for each of the operating modes. The assessment of the thermal state in steady-state conditions was carried out using an equivalent thermal equivalent circuit. Thermal transients were investigated when starting an induction motor from an autonomous energy source based on an induction generator. On a thermal mathematical model, the study of the effect of the output voltage asymmetry on the heating of the connected induction motor was carried out. It is shown that the asymmetry of the output voltage of an induction generator reaches 3–10 % and causes overheating of the windings in excess of the permissible values. A regression model has been developed for studying the operating conditions of an induction motor when powered by an induction generator with an asymmetry of the stator windings. The use of the obtained equations will make it possible to determine the most rational combination of factors affecting the heating of the stator windings of induction machines, in which they will not overheat above the maximum permissible temperature values of the corresponding insulation classes

Supporting Agency

  • The results were obtained within the project co-funded by the Polish National Agency for Academic Exchanges (PPN/BUA/2019/1/00016/U/00001).

Author Biographies

Volodymyr Chenchevoi, Kremenchuk Mykhailo Ostrohradskyi National University

PhD, Associate Professor

Department of Automatic Control Systems and Electric Drive

Valeriy Kuznetsov, Railway Research Institute

Doctor of Technical Sciences, Professor

Electric Power Department

Vitaliy Kuznetsov, National Metallurgical Academy of Ukraine

PhD, Associate Professor

Department of Electrical Engineering

Olga Chencheva, Kremenchuk Mykhailo Ostrohradskyi National University

PhD, Associate Professor

Department of Labor Protection, Civil and Industrial Safety

Iurii Zachepa, Kremenchuk Mykhailo Ostrohradskyi National University

PhD, Associate Professor

Department of Systems of Automatic Control and Electric Drive

Oleksii Chornyi, Kremenchuk Mykhailo Ostrohradskyi National University

Doctor of Technical Sciences, Professor

Department of Automatic Control Systems and Electric Drive

Maksim Kovzel, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine

PhD, Associate Professor

Viktor Kovalenko, Zaporizhzhia National University

Doctor of Technical Sciences, Professor

Department of Electrical Engineering and Energy Efficiency

Mykola Babyak, Dnipro National University of Railway Transport named after Academician V. Lazaryan

PhD, Associate Professor

Department of Transport Technologies

Serhii Levchenko, Zaporizhzhia National University

PhD, Associate Professor

Department of Electrical Engineering and Energy Efficiency

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Published

2021-08-31

How to Cite

Chenchevoi, V., Kuznetsov, V. ., Kuznetsov, V., Chencheva, O., Zachepa, I., Chornyi, O., Kovzel, M., Kovalenko, V., Babyak, M., & Levchenko, S. (2021). Development of mathematical models of energy conversion processes in an induction motor supplied from an autonomous induction generator with parametric non-symmetry. Eastern-European Journal of Enterprise Technologies, 4(8(112), 67–82. https://doi.org/10.15587/1729-4061.2021.239146

Issue

Vol. 4 No. 8(112) (2021): Energy-saving technologies and equipment

Section

Energy-saving technologies and equipment

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Copyright (c) 2021 Volodymyr Chenchevoi, Valeriy Kuznetsov, Vitaliy Kuznetsov, Olga Chencheva, Iurii Zachepa, Oleksii Chornyi, Maksim Kovzel, Viktor Kovalenko, Mykola Babyak, Serhii Levchenko

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