Development of Mathematical Models of Energy Conversion Processes in an Induction Motor Supplied from an Autonomous Induction Generator with Parametric non-Symmetry
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Date
2021
Journal Title
Journal ISSN
Volume Title
Publisher
НВП ПП «Технологічний Центр», Харьків
Abstract
ENG: 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.
Description
V. Kuznetsov: ORCID: 0000-0002-8169-4598, M. Babyak: ORCID: 0000-0001-5125-9133
Keywords
induction generator, induction motor, mathematical model, hodograph, thermal model, regression analysis, КТТ (ЛФ), КЕЛІ (ІПБТ)
Citation
Chenchevoi V., Kuznetsov Valeriy, Kuznetsov Vitalii, Zachepa Y., Chencheva O., Chornyi O., Kovzel M., Kovalenko V., Babyak M., Levchenko S. 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 2021. Vol. 4. № 8 (112). P. 67–82. DOI: 10.15587/1729-4061.2021.239146.