Abstracts
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| Дата: | 2007 |
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| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут технічних проблем магнетизму НАН України
2007
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| Назва видання: | Електротехніка і електромеханіка |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/142905 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Abstracts // Електротехніка і електромеханіка. — 2007. — № 4. — С. 74-75. — англ. |
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irk-123456789-1429052018-10-19T01:23:25Z Abstracts 2007 Article Abstracts // Електротехніка і електромеханіка. — 2007. — № 4. — С. 74-75. — англ. 2074-272X http://dspace.nbuv.gov.ua/handle/123456789/142905 en Електротехніка і електромеханіка Інститут технічних проблем магнетизму НАН України |
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English |
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Abstracts |
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Abstracts Електротехніка і електромеханіка |
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Abstracts |
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Abstracts |
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Abstracts |
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Abstracts |
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abstracts |
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Інститут технічних проблем магнетизму НАН України |
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2007 |
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http://dspace.nbuv.gov.ua/handle/123456789/142905 |
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Abstracts // Електротехніка і електромеханіка. — 2007. — № 4. — С. 74-75. — англ. |
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Електротехніка і електромеханіка |
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2025-07-10T16:01:18Z |
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2025-07-10T16:01:18Z |
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1837276367790538752 |
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74 Електротехніка і Електромеханіка. 2007. №4
Abstracts
Electrical Mashines and Apparatus
Baisha A.I., Kozlov V.V., Bratkovskaya K.A.,
Nabokova O.V. 5
Calculation of oil speed in prismatic chan-
nels of power oil transformers with cylindrical
windings.
The article presents calculations of oil flow ve-
locity in power oil transformers. Results for rec-
tangular and prismatic channels are obtained. They
may be used for increasing accuracy of determina-
tion of temperature distribution in the windings
and for calculating the maximum temperature.
Key words – power oil transformers, oil
speed, maximum temperature.
Branspiz Yu.A., Polyachenko E.Yu. 7
Application of a conformal mapping method
to bipolar electromagnet rational geometry de-
termination.
The paper presents results of optimum geomet-
rical dimensions determination for U-type elec-
tromagnetic systems in terms of maximum product
of intensity over the central pole and its gradient
and in terms of maximum intensity gradient.
Key words – U-type electromagnetic systems,
optimum geometrical dimensions, conformal
mapping method.
Grechko M.V., Dyachenko V.V. 9
Ways of improvement of specific indexes of
valve inductor generators.
Analysis of the basic directions of improve-
ment of specific indexes of valve inductor genera-
tors is performed.
Key words – valve inductor generator, specific
indexes improvement, basic directions.
Dubinets L.V., Zorichev A.V., Karzova O.O.,
Marenich O.L., Ustimenko D.V. 13
Requirement for response speed of electric cir-
cuit protection apparatus in railroad rolling stock.
The article considers a problem of response
speed of short-circuit current protection apparatus
in rolling stock electric circuits. Recommendations
on desired figures of protection apparatus actuation
time are given.
Key words – short-circuit current protection,
rolling stock electric circuits, protection appa-
ratus actuation time.
Zhornyak L.B., Osinskaya V.I. 15
Research into simulation methods for an on-
load tap-changing transformer voltage regula-
tion system to increase power supply quality.
Problems of the mains voltage quality increase
for electric power consumers are investigated. In-
vestigation of a power transformer voltage regula-
tion system with an on-load regulator of РНОА –
110/800 type is made in Matlab (Simulink 4).
Key words – on-load tap-changing trans-
former, mains voltage quality, voltage regula-
tion system, simulation.
Zablodskiy N.N. Ovcharov A.A. Filatov M.A. 22
Experimental estimation of power processes
in the massive rotor of an auger electrother-
momechanical energy converter.
Results of theoretical research on power proc-
esses in the massive rotor of an auger electrother-
momechanical energy converter are given. De-
pendences of eddy current intensity distribution on
the converter massive rotor surface are obtained,
behavior of thermal field distribution is revealed.
Key words – auger electrothermomechanical
energy converter, massive rotor, power proc-
esses, calculation.
Klement′ev A.V. 25
Research on currents of asymmetrical short
circuits in combined contactless synchronous
generators.
Calculation peculiarities for currents of asym-
metrical short circuits in contactless synchronous
generators with combination over magnetic circuit
and inductor windings are studied.
Key words – contactless synchronous genera-
tor; combination over magnetic circuit and in-
ductor windings, asymmetrical short circuits.
Klimenko B.V. 28
International Electrical Vocabulary –
Ukrainian prospects.
Publication of selected translation from section
441 - Switchgear, controlgear and fuses – of In-
ternational Electrical Dictionary (IED) into
Ukrainian continues. This time we introduce the
Ukrainian for sections 441-15 – Parts of switching
devices – and 441-16 – Operation.
Key words – International Electrical Dic-
tionary, section 441-15 – Parts of switching de-
vices, section 441-16 – Operation, terms and
definitions, translation into Ukrainian.
Komisarenko O.I., Lamanov S.L. 34
Influence of current fall curve shape on en-
ergy release at load shedding.
It is shown that in a real parameters range of a
switched-off electrical circuit, for essential energy
release reduction in loading it is necessary to im-
prove the shape of i(t) curve and to increase
switching surge voltage coefficient up to maxi-
mum permissible level, other conditions equal.
The analysis is performed in relative units.
Key words – switched-off electrical circuit, en-
ergy release reduction, current fall curve shape.
Kuz’min V.V., Shpatenko V.S. 36
On a problem of calculation of power action of
magnetic core on windings in electric machines.
A comparative analysis of results of unconven-
tional theoretical approaches application to solving
a problem of calculation of magnetic core action
on windings in electric machines is performed un-
der condition of magnetic field induction being
equal to zero in the zone of the winding location
("paradoxes of transformer and generator").
Електротехніка і Електромеханіка. 2007. №4 75
Key words – magnetic core action, electric
machine winding, unconventional theoretical
approaches, comparative analysis.
Limonov L.G. 40
Peculiarities of an asynchronous electric mo-
tor application to a winder drive.
The article is devoted to analysis of application of
an asynchronous electric motor with a squirrel-cage
rotor to electric drive of a rolling mill strip winder or
a rolled metal processing line, with utilization of dif-
ferent motor speed frequency control systems.
Key words – asynchronous motor, strip winder,
frequency control, application peculiarities.
Pentegov I.V., Rymar S.V., Volkov I.V.,
Larchenko B.B., Levin M. 45
New three-phase autotransformer phase-
shifting devices for higher current harmonics
suppression.
New phase-shifting autotransformer devices of
higher current harmonics suppression which can be
used in three-phase electrical networks without the
neutral at work with 12-pulse rectifier circuits and
with evenly-distributed nonlinear loads are devel-
oped. The new design of the devices improves
weight-and-dimension parameters and technical
and economical characteristics due to locating
windings only on the edge rods of the magnetic
circuit, the central rod free.
Key words – power quality, current harmonics,
autotransformers, “hexagon” circuitry, “rhomb”
circuitry, “flags” circuitry, 12-pulse rectifiers.
Pleshkov P.G., Pleshkov S.P., Kotysh A.I.,
Soldatenko V.P. 50
Power supply of agricultural consumers on
the basis of a complex electrical power system
with utilization of renewable energy sources.
The article considers and analyzes efficiency of
utilization of the most promising renewable energy
sources for power supply of agricultural consumers
in the context of the new Energy Policy of Ukraine.
Key words – renewable energy sources,
power supply system, tariff system.
Teterko O.A. 53
Results of operational tests of recovered
electric contacts of ekg-8 contactors in alternat-
ing current electric locomotives.
In the work, results of operational tests of elec-
tric contacts of AC locomotive contactors EKG-8
are presented, the contacts recovered through braz-
ing with different materials. Results of measure-
ment of transitional resistance of the main and
break contacts after exploitation are given.
Key words – electric contacts, contact mate-
rials, main and break contacts, contact brazing.
High Electrical and Magnetic Field Engineering
Baranov M.I., Nosenko M.A. 57
A 2D electrothermal problem for the metal-
lic skin of an aircraft under lightning action.
In terms of a 2D temperature field approxima-
tion, results of improved analytical calculation of
temperature overshoot in the high-current spark
channel lock-in zone of a lightning on a flat sur-
face of aircraft metallic skin are presented. It is
shown that, due to electrothermal action, the
2/50μs-form pulse component of the lightning full
current of 200 kА amplitude and 500 мкс duration
only causes local near-surface destruction of the
aluminum wall of the skin, while the constant
component of the lightning full current of 200 А
amplitude and 1 s duration may result in the skin
fusion to significant depth.
Key words – lightning, lightning channel,
pulse and constant components of lightning
current, temperature, metallic skin, aircraft.
Boyko M.I., Bortsov A.V., Evdoshenko L.S.,
Zarochentsev A.I., Ivanov V.M. 64
Utilization of pulsed corona discharge with
enlarged ionization zone for toxic gaseous waste
conversion.
A plant for conversion of toxic gaseous waste
by means of pulse corona discharge with enlarged
ionization zone of working voltage up to 70 kV,
pulse repetition frequency up to 2500 pulses per
second, and low power inputs is presented. The
plant is designed to work in industrial facilities
where conversion of gaseous waste is required.
Pulse corona discharge allows avoiding undesir-
able heating of the gas being conversed.
Key words – pulsed corona discharge with
enlarged zone of ionization (PCDEZI), toxic gase-
ous waste, plant for conversion of toxic gases.
Brzhezitsky V.A., Masluchenko I.N., Trotsenko
E.A., Hominich V.I. 66
Experimental research on electric strength
of a high-voltage bushing with combined
insulation.
Features of a high-voltage toroidal-type trans-
former bushing with combined insulation are con-
sidered. Experimental equipment and measurement
procedure are described.
Key words – high-voltage toroidal-type
transformer, bushing, combined insulation.
Electric stations
Voronovskiy G.K., Sergeev S.A., Starkov K.A.,
Abashkina O.S. 68
Estimation of marginal increment of electri-
cal load in distributing network 110 kV caused
by domestic load growth.
Necessary investments for distributing network
110 kV development are estimated. A sequence of
stages aimed at reconstruction of the network
components that allow to increase their transmit-
ting capability is proposed. A marginal increment
of electrical load that permits functioning of the
network without reconstruction is evaluated.
Key words – domestic electrical load, dis-
tributing network reconstruction.
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