Abstracts
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| Datum: | 2007 |
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| Format: | Artikel |
| Sprache: | English |
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Інститут технічних проблем магнетизму НАН України
2007
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| Schriftenreihe: | Електротехніка і електромеханіка |
| Online Zugang: | http://dspace.nbuv.gov.ua/handle/123456789/142882 |
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| Zitieren: | Abstracts // Електротехніка і електромеханіка. — 2007. — № 3. — С. 80-81. — англ. |
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irk-123456789-1428822018-10-19T01:23:07Z Abstracts 2007 Article Abstracts // Електротехніка і електромеханіка. — 2007. — № 3. — С. 80-81. — англ. 2074-272X http://dspace.nbuv.gov.ua/handle/123456789/142882 en Електротехніка і електромеханіка Інститут технічних проблем магнетизму НАН України |
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Abstracts Електротехніка і електромеханіка |
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Інститут технічних проблем магнетизму НАН України |
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Abstracts // Електротехніка і електромеханіка. — 2007. — № 3. — С. 80-81. — англ. |
| series |
Електротехніка і електромеханіка |
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2025-07-10T15:58:16Z |
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1837276175087435776 |
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80 Електротехніка і Електромеханіка. 2007. №3
Abstracts
ELECTROENGEENIRING: Prominent events and great names
Baranov M.I. 5
Enriko Fermi – one of the founders of quan-
tum statistics, electrodynamics and nuclear
power engineering.
A brief scientific-and-historical essay about the
main achievements and discoveries in physics and
atomics made by the prominent physicist of the
20th century Enriko Fermi is given.
Key words – physics, atomics, quantum sta-
tistics, electrodynamics, nuclear power engi-
neering, scientific-and-historical essay.
Electrical Mashines and Apparatus
Bibik O.V., Popovich O.M. 12
Increase in power efficiency of induction
drives in quasi-static modes.
An algorithm for performance increase reserves
estimation at designing induction motors subject to
real operation modes is introduced.
Key words – induction motors, performance
increase reserves, estimation.
Branspiz M.Yu. 15
To optimization problem formulation for a
single-turn winding.
Solutions of two optimization problems for a
single-turn winding are given. It is shown that pos-
sible limitations on the initial data domain must be
taken into account at an electromagnet optimiza-
tion problem formulation, possible limitations.
Key words – single-turn winding, optimiza-
tion problem formulation.
Vas’kovski Yu.M., Gaidenko Yu.A., Natsik O.V. 19
Field theory based research on asynchronous
motors under rotor parameters unsymmetry.
Mechanical and operational characteristics of
an asynchronous motor are simulated and studied
by means of field theory methods in asymmetrical
operation conditions under the rotor bars break.
Peculiarities of electromagnetic field distribution
in the active zone of the motor under presence of
the damaged bars are analyzed.
Key-words – asynchronous motor, rotor bars
break, mechanical and operational characteristics.
Javoronkov M.A,. Tkachenko S.A. 23
Diagnostics of every-day availability of elec-
tromechanical switching devices.
The article is devoted to research into every-
day availability of electromechanical switching
units and analysis of results. The research is con-
ducted at Electric and Electronic Apparatus De-
partment of Moscow Power Engineering Institute
(Technical University).
Key words – electromechanical switching de-
vice, every-day availability, research.
Zablodsky N.N. 25
Interaction of a screw electro- thermo-
mechanical converter and loading-cooling medium
Processes of heat transfer and friction at interac-
tion of electro- thermo-mechanical energy converters
and loading-cooling medium are investigated.
Key words – heat transfer, electro- thermo-
mechanical converter, loading-cooling, medium.
Klimenko B.V. 29
International Electrical Vocabulary –
Ukrainian prospects
We continue publishing translation of selected
parts from International Electrical Dictionary
(IED), namely, section 441 - Switchgear, control-
gear and fuses, into Ukrainian. In the paper, trans-
lation of section 441-14 – Switching devices - is
presented.
Key words – International Electrical Diction-
ary, section 441-14 – Switching devices, terms
and definitions, translation into Ukrainian.
Konohov N.N. 36
Structural analysis and principle of symme-
try at perfection of electric machine design.
The history of theory of systems and theory of
symmetry and their application to analysis of sepa-
rate elements and units of electric machines (EM)
are considered. Problems of EM design perfection
are considered from the general points of theory of
systems and theory of symmetry. Advantages of
development of EM design with a radial-axial
cooling system (a symbol of n:m symmetry) versus
advantages of EM design with an axial cooling
system are analyzed.
Key words – electric machine design, princi-
ple of symmetry, structural analysis.
Moroz V.I. 39
Application of integral equations to
simulation of controlled electromechanical
systems.
An example of integral equations application to
simulation of controlled electromechanical systems
is described in this paper. Analysis of accuracy and
rational order of the numeric integration formula is
made with implicit Adams methods.
Key words – integral equations, controlled
electromechanical systems, computer simula-
tion, numeric methods accuracy.
Pavlenko T.P. 44
Influence of activation on electric contacts
wear.
In the paper, problems of activation process ac-
tion on electric contact wear are considered. Tak-
ing into account features of the contact material,
namely, thermionic activity at production and op-
eration in real conditions, we make a conclusion
that this contact composition can be used in elec-
tric apparatus with arc commutation.
Key words – activation process action, elec-
tric contacts wear, thermionic activity.
Polyakov M.A. 47
A fuzzy regulator of power oil-immersed
transformer cooling on the basis of disturbance
factor change prediction.
The structure and principles of a fuzzy regula-
tor design for power oil-immersed transformer
cooling are analyzed, the regulator employs lin-
guistic variables of load current and environment
temperature change prediction for the purpose of
transformer isolation thermal wear minimization.
Key words – power oil-immersed trans-
former, cooling, fuzzy regulator, disturbance
Електротехніка і Електромеханіка. 2007. №3 81
factor change prediction.
Popovich O.M., Golovan I.V. 51
Research on asynchronous motors with a
massive ferromagnetic rotor at an increased
power supply frequency.
A mathematical model for starting characteris-
tic shaping for asynchronous motors with fre-
quency-dependent parameters of the rotor is intro-
duced; the model takes into account equivalent
circuits of eddy-current losses in the stator and the
rotor steel.
Key words – asynchronous motor, starting
characteristic shaping, mathematical model.
Rozanov Y.K., Kriukov K.V. 55
A power flow controller with a photovoltaic
converter.
The paper introduces a scheme of a power flow
controller with a photovoltaic converter on the dc
side. Also, the paper discusses ways of efficiency
increase for systems with photovoltaic converters.
The work is conducted at Electric and Electronic
Apparatus Department of Moscow Power Engi-
neering Institute (Technical University).
Keywords – multiconverter, power flow con-
troller, photovoltaic converter, dc-dc converter.
Sebko V.V. 57
Research into transient process of air-layer
heating between a heater and a product under
the heater temperature alternation.
The transient process of air-layer heating be-
tween a heater and a product under the heater tem-
perature alternation is studied. For a specific exam-
ples, solutions of a heat-balance equation describing
transient heating of an air layer between the heater
winding and a product are found: a general station-
ary solution ∗Δ вt , a partial nonstationary solution
∗∗Δ вt and the complete decision вtΔ . Heating time
dependences of the solutions are plotted.
Key words – transient heating, heat-balance
equation solutions, air layer, temperature alter-
nation.
Shumilov Yu.A., Ponomarenko V.K.,
Kuz’min V.V., Demidyuk B.M. 61
Generator reliability control in nuclear, hy-
dro- and heat power plants.
A necessity for on-line monitoring and diag-
nostics of large generators state so as to prevent
the generators breakdown is justified. It is pro-
posed to replace preventive maintenance by main-
tenance over significant abnormality of the reli-
ability index.
Key words – power plant generators state, on-
line monitoring and diagnostics, maintenance.
Shurub Yu.V. 64
Improvement of operational properties of
three-single-phase induction electric drives in
starting modes.
A way of improvement of operational proper-
ties of three-single-phase induction electric drives
through application of combination cirсuits is in-
troduced, a mathematical model is developed to
analyze dynamic processes resulting from circuit
switching in such electric drives.
Key words – induction electric drive, combi-
nation cirсuit, mathematical model, operational
properties improvement.
Electrical Engineering: Theory
Branspiz Yu.A. 66
Analysis of einstein’s mental experiment on
determination of magnetic field component actiing
on electric current in a ferromagnetic conductor.
It is shown that accounting of the disk thick-
ness in Einstein’s mental experiment does not al-
low making an unambiguous conclusion about
description of force action on electric current in a
magnetic material through magnetic field intensity
or induction. The way of description of the mag-
netic field force action on the magnetic material
turns out essential.
Key words – electric current, magnetic mate-
rial, Einstein’s mental experiment, force.
Gorbachev M.N. 69
Geometric simulation of periodic inhar-
monic energy processes in controlled radio cir-
cuits and systems.
The paper presents and substantiates a principle
of geometric simulation of periodic inharmonic
energy processes in controlled radio circuits and
power supply systems for radio equipment with
employment of mathematical theory of field.
Key words – controlled radio circuits and sys-
tems, periodic inharmonic energy processes, geo-
metric simulation, mathematical theory of field.
Pelevin D.E. 72
Initial data determination for electromag-
netic devices of magnetic field control indoors
An initial data determination method for elec-
tromagnetic devices intended for magnetic field
control indoors is developed. The method is based
on direct measurement of magnetic field strength
in specified indoor space at space mesh points. The
initial array is processed by a cubic spline interpo-
lation method. The initial data are represented
quantitatively as matrixes and graphically as mag-
netic field distribution cards on parallel and or-
thogonal planes.
Key words – magnetic field control, magnetic
field strength, measurement, electromagnetic
devices, cubic spline function.
Education Structure in
”Electrical Engineering” and “Electromechanics”
Godzhello A.G., Zhavoronkov M.A., Kalash-
nikova A.V., Nechaev D.N. 77
Creation of a universal training test bench
for research on low-voltage apparatus
The work is devoted to development of a test
bench for research on low-voltage apparatus. The
bench constituent elements and research done on
the bench are described. This project is realized at
Electric and Electronic Apparatus Department of
Moscow Power Engineering Institute (Technical
University).
Key words – low-voltage apparatus, re-
search, universal training test bench.
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