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2001, No 4

CONTENTS

Electrodynamics of electrical power devices

ZIRKA S.E., MOROZ Yu.I., KHRUSCH V.K. Finite-differential circuits of equations sulution of a sheet

magnetodynamics___________________________________________________________________ 3

BARANOV M.I., DATSENKO V.P., KOLIUSHKO G.M. Electromagnetic effect simulation at a direct

lightning stroke into earth________________________________________________________________ 9

SMAL'I.V. Investigation of subharmonic oscillations in ferroresonance circuits______________________ 14

Conversion of electric energy parameters

PAVLOV G.V., OBRUBOV A.V., POKROVSKY M.V. Control performances of constant voltage

converters with series resonance inverters_________________________________________________ 18

BARANOV A.N., KOBETS D.V. Linearized model of a pulse converter of constant increasing voltage______ 23 NAMESTNIK S.G. Periodicity of voltages (currents) curves a series RLC-circuit with a commutator

in a capacitance circuit (inductance)_______________________________________________________27

BESTEMJANNIKOV V.M., MATVEEV V.Yu. Optimization of surge currents generator with

a pulse converter for a maximum power obtaining in load conditions _____________________________ 30

Electromechanical energy conversion

STAKHIV P.G., KOZAK Yu.Ya. Macromodels construction of electromechanical components

with optimization application_____________________________________________________________33

ANDRIENKO V.M., KLINGER K. Determination of asynchronous machines parameters by means

of experimental data_____________________________________________________________________36

Electric power systems and installations

STOGNIY B.S., TUTIK V.L., DEMCHENKO M.A. Computation of a residual resource of relay devices_____ 39

KUZNETSOV V.G., LJITY A.P. Dynamic models of electromagnetic compabilfty for voltages

asymmetry estimation in power networks____________________________________________________41

TITKO V.A. Problem of an optimum strategy search of equipment modernization, replacement and

repair in power industry________________________________________________________________ 45

GOGOLJUK P.F., GRECHIN T.M., RAVLIK O.M. Mathematical simulation of transient processes

of power supply systems with valve instruments and dynamic loads________________________________ 50

IVANKOV V.F. Electromagnetic and termal investigations of compressible transformer ring from

a non-magnetic steel__________________________________________________________________ 56

BOIKO N.I., TUR A.N., EVDOSHENKO L.S., IVANOV V.M., ZAROCHENTSEV A.I., RUDAKOV V.V.,

BOZHKOV A.I. Installation for liquid products processing by means of high-voltage

pulse influences complex (HVPIC) and investigations results______________________________________ 59

Electrical and magnetic measurements

GRINEVICH F.B., TARANOV S.G., MAZMANJAN R.O., MARSHALENKO B.A. Automated complex

for high-power permanent magnets testing and sorting__________________________________________ 64

NOVIK A.I. Special features of capacitive measurement of substances level of different conductivity ________ 66 MONASTYRSKY Z.Ya. Symmetric multistep modulation in digital extreme bridges of an

alternating current______________________________________________________________________ 72

KARASINSKY O.L., TESIK Yu.F. Measurement algorithm of reactive power orientated towards a
implementation in microcontrollers___________________________________________________________ 76

Abstracts_______________________________________________________________________________ 79