CONTENTS

Engineering and Educational Technologies at Electrical and Computer Systems. Quarterly theoretical and practical journal [Online journal]. – Kremenchuk: KrNU, 2014. – № 2 (6). – 74 p. – Available at: http://eetecs.kdu.edu.ua

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Information and Communication Technologies at Education

REALIZATION OF DIGITAL SIGNAL PROCESSING TASK USING VIRTUAL AND PHYSICAL LABORATORY STANDS  
Perekrest A., Havrylets H., Snihur V.  (download)
[in Ukrainian]

To improve the efficiency of studying complex issues of digital signal processing in control systems technical objects can use virtual and physical stands. The tasks of studying the specific implementation of digital signal processing procedures using computerized stands based on a digital signal processor and specialized software are considered in the article. As the basic elements used demo board with processor TMS320C6713, digital signal generator and oscilloscope and software Matlab, Labview. Stands operational stages for studying of applied questions of digital signal processing and their technical characteristics are given. The package of laboratory works used at training of specialists in the field of «Systems Engineering» is developed. Are given technical, informational and methodological support allows us to study applied problems of digital signal processing in modern software packages with modern microprocessor equipment.

Key words: digital signal processing, digital signal processor, systems engineering, Matlab, Labview.

1. Sergienko, A.B. (2002), Tsifrovaya obrabotka signalov [Digital signal processing], Piter, St. Petersburg. [in Russian]

2. Bondarev, V.N., Trester, G. and Chernega, V.S. (2001), Tsifrovaya obrabotka signalov: metody i sredstva [Digital processing signals: methods and tools], Konus, Kharkiv. [in Russian]

3. Vitiazev, V.V. and Vitiazev, S.V. (2007), Tcifrovye protcessory obrabotki signalov TMS320C67x kompanii Texas Instruments [Digital signal processors from Texas Instruments TMS320C67x], Ryazan State Radio Engineering University, Ryazan. [in Russian]

4. Anufriev, I.E., Smirnov, A.B. and Smirnova, E.N. (2005), MATLAB 7, BHV-Petersburg, St. Petersburg. [in Russian]

5. Fedosov, V.P. and Nesterenko, A.K. (2007), Tcifrovaya obrabotka signalov v LabVIEW [Digital signal processing in Labview], DMK Press, Moscow. [in Russian]

6. Rodkin, D.Y., Kuprii, O.O and Perekrest, A.L.(2010), ''Program complex for studying the procedures of digital information processing'', Author's certificate no. 32064, applicant and owner Kremenchuk Mykhailo Ostrohradskyi National University, published 12.02.10, 7 p. [in Ukrainian]

7. Perekrest, A.L. and Kuprii, O. O. (2009), ''Educational – methodical complex study of digital signal processing'', Elektromekhanichni systemy, metody modeliuvannia ta optymizatsii. VII Vseukrainska naukovo-tekhnichna konferentsiia molodykh uchenykh i spetsialistiv. Zbirnyk naukovykh prats [Electromechanical systems modeling and optimization methods. Proceedings of the VII All-Ukrainian Scientific Conference of Young Scientists and Specialists], Kremenchuk, Kremenchuk State Polytechnic University, April 2-4, 2009, pp. 33-34. [in Ukrainian]

8. Technical documentation on board DSK6713. – Available at: http://www.datasheetarchive.com/DSK+6713-datasheet.html (accessed June 15, 2014).

9. Sergienko, A.B. (2003), ''Adaptive filtering algorithm: features implemented in MatLab'', Exponenta Pro. Matematika v prilozheniiakh : elektronnyi nauchno-prakticheskii zhurnal, no. 1 (1), pp. 18–28, available at: http://ukrgap.exponenta.ru/ (accessed June 15, 2014). [in Russian]

Information Systems and Technologies. Mathematical Modeling

MODELING INTENTIONAL ATTACKS ON PERSONAL ACCOUNTS OF SOCIAL NETWORK  
Zaliubovska T., Sydorenko V., Haidukov D., Оstrovska A.  (download)
[in Russian]

A conception of personal accounts’ protection from social networks is proposed. In contrast to existent, it is based on a preliminary simulation modeling of target attacks on a particular community for the purpose of identification leading and the most vulnerable vertices of the community. Such vertices need an enhanced protection, because their deletion leads to the dramatic collapse (percolation) of the community. A number of simulated experiments with target attacks on communities of the social network “VKontakte” were done. It was ascertained that the effect of percolation occurs both for a graph of all the network and certain communities, that were found with use of different known clustering algorithms. In our case the estimation of percolation threshold varies within 30-50% target deleted vertices.

Keywords: social networks, scale-free graphs, target attacks, percolation.

1. Gubanov, D.A., Novikov, D.A. and Chkhartishvili, A.G. (2010), Sotsial'nye seti: modeli informatsionnogo vliyaniya, upravleniya i protivoborstva [Social Networks: models of informational influence, control and confrontation], Fizmatlit, Moskow. [in Russian]

2. Albert, R., Jeong, H. and Barabási, A.-L. (2000), Error and Attack Tolerance of Complex Network, Nature. International weekly journal of science, Iss. 406, pp. 378-382.

3. Callaway, D.S., Newman, M.E.J., Strogatz, S.H. and Watts, D.J. (2000), Network Robustness and Fragility: Percolation on Random Graphs, Physical Review Letters, Vol. 85, no. 25, pp. 5468-5471.

4. Newman, E.J. and Girvan, M. (2004), Finding and Evaluating Community Structure in Networks, Physical Review E, Vol. 69, Iss. 2, 15 p.

5. Dorogovtsev, S. N. and Mendes, J.F.F. (2003), Evolution of Networks. From Biological Nets to the Internet and WWW, Oxford University Press, Oxford.

6. Pastor-Satorras, R. and Vespignani, A. (2001), Epidemic Spreading in Scale-Free Networks, Physical Review Letters, Vol. 86, no. 14, pp. 3200-3203.

7. Pastor-Satorras, R. and Vespignani, A. (2001), Epidemic Dynamics and Endemic States in Complex Networks, Physical Review E, Vol. 63, Iss. 6, 8 p.

8. Pastor-Satorras, R. and Vespignani, A. (2002), Immunization of Complex Networks, Physical Review E, Vol. 65, Iss. 3, 9 p.

9. Moreno, Y., Pastor-Satorras, R. and Vespignani, A. (2002), Epidemic Outbreaks in Complex Heterogeneous Networks, The European Physical Journal B, Vol. 26, pp. 521-529.

10. Dezső, Z. and Barabási, A.-L. (2002), Halting Viruses in Scale-Free Networks, Physical Review E, Vol. 65, Iss. 5, 4 p.

11. Callaway, D.S., Hopcroft, J.E., Kleinberg, J.M., Newman, M.E.J. and Strogatz, S.H. (2001), Are Randomly Grown Graphs Really Random?, Physical Review E, Vol. 64, Iss. 4, 7 p.

12. De Meo, P., Ferrara, E., Fiumara, G. and Provetti A. (2011), Generalized Louvain Method for Community Detection in Large Networks, Proceedings of the 11th International Conference On Intelligent Systems Design And Applications, November 22-24, 2011, pp. 88-93.

Electrical Complex and Systems. Energetics

SUPPORT OF AUXILIARY POWER SUPPLY OF MOINAK HYDRO POWER PLANT BY SOLAR BATTERIES  
Sadyrbaev Sh., Bekbaiev A.  (download)
[in Russian]

The analysis showed that the Moinak hydro power plant is important part of power industry of Kazakhstan. Auxiliary of hydro power plant are provided from the total amount of developed electric energy. It is shown that transfer of ensuring auxiliary of Moinak hydro power plant to alternative energy sources will allow to reduce the funds expenditure necessary for service of hydro power plant work. As a result of the analysis of various alternative energy sources solar batteries are defined as the most perspective. Necessary transformers power of auxiliary of Moinak hydro power plant is determined. On the basis of electric equivalent circuits of the ideal and real photo converter the equations for determining short circuit current of and idling voltage of the real silicon photo converter are received. Astana-60P produced by Astana Solar Kazakhstan is chosen as the basic photo converter. Using its volt-ampere characteristic the power of the elementary photo converter is calculated. The necessary area placement of solar batteries for ensuring power supply of the auxiliary transformer of Moinak hydro power plant is calculated.

Key words: energy saving, green power, silicon solar batteries, Astana Solar.

1. Khaydarov, K.A. Teoreticheskie osnovy elektrotekhniki i elektroniki. Osnovaniya elektrotekhniki i elektroniki. Elektroenergetika Kazakhstana, available at: http://bourabai.kz/toe/kazenergy.htm (accessed May 11, 2014). [in Russian]

2. Data’s of official site of AO «Samruk-Energy», available at: http://samruk-energy.kz/ (accessed May 11, 2014). [in Russian]

3. Data’s of official site of TOO «ASTANAENERGOSBYT», available at: http://www.astanaenergosbyt.kz/tarif (accessed May 11, 2014). [in Russian]

4. (2004), Solnechnaya energiya v Kazakhstane [Solar Energy of Kazakhstan], TERRA-Zher-Ana, no. 10, pp. 6-7. [in Russian]

5. (1983), Fizicheskiy entsiklopedicheskiy slovar' [Physical Encyclopaedia], Sovetskaya entsiklopediya, Moskow. [in Russian]

6. Gliberman, A.Ya. and Zaytseva, A.K. (1961), Kremnievye solnechnye batarei [Silicon Solar Battaries], Gosenergoizdat, Moskow, 74 p. [in Russian]

7. Sadyrbayev, Sh.A., Bekbayev, A.B., Orynbaev, S. and Kaliyev, Zh. (2013), Design and Research of Dual-Axis Solar Tracking System in Condition of Town Almaty, Middle East Journal of Scientific Research (MEJSR), no. 17 (12), pp. 1747-1751.

FEATURES SELF-EXCITATION AUTONOMOUS SOURCES OF ELECTRICITY GENERATION BASED ON ASYNCHRONOUS GENERATORS  
Chenchevoi V., Rodkin D., Chornyi, O., Yudina H.  (download)
[in Russian]

In the practical implementation of technical systems with hypertension is very important, in particular to ensure the self-excitation of an induction machine for a given period and certain parameters established as a result of self-excitation mode. The problem of proper selection and proper design parameters AG forth the urgency of developing a method of aggregate consideration of quality range of possible self-excitation transient hypertension in order to assess the influence of variations of electric generator parameters on the quality of the process of self-excitation. In this regard, the task of considering the quality of the generalized transient self-excitation for the whole range of values of any parameter of the asynchronous machine with capacitor excitation with a view to optimal selection of the design. The theoretical study of self-excitation capacitance AC machines have created a good foundation for the successful solution of issues related to the practical use of this phenomenon, in particular hypertension. One of them – a comprehensive analysis of the self-excitation transient hypertension.

Key words: induction generator, the process of self-excitation, experiment planning.

1. Gentkovski, Z. (1990), Matematicheskoe modelirovanie elektricheskikh protsessov v asinkhronnom generatore s uluchshennymi parametrami vykhodnoy energii [Mathematical modelling of electrical processes in the asynchronous generator with output power], Proceedings of Forth International Scientific Conference. Integrated Problems of Industrial Control, Kiev, 1990, pp. 137-149. [in Russian]

2. Shakuntla, Boora, (2009), On-Set Theory of Self-Excitation in Induction Generator, Issue on Electrical & Electronics. International. Journal of Recent Trends in Engineering (IJRTE), Vol. 2, N. 5, pp. 325-330.

3. Zubkov, Yu.D., (1949), Asinkhronnye generatory s kondensatornym vozbuzhdeniem [Synchronous generator with capacitor excitation], AN Khaz. SSR, Alma-Ata, 112 p. [in Russian]

4. Mandel'shtam, L. I. and Papaleksi, Ja.D. (1934), Original'nye raboty o parametricheskom vozbuzhdenii elektricheskikh kolebaniy [Original works about parametric excitation of oscillations], Teoreticheskaya fizika, Vol. 4, Iss. 1, pp. 5-29. [in Russian]

5. Kitsys, S.Y. (1977), K analizu protsessov samovozbuzhdeniya asinkhronnogo generatora [The analysis of processes of self-excitation asynchronous generator], Izvestiya vuzov. Elektromekhanika, no. 5, pp. 506-511. [in Russian]

6. Kitsys, S.Y. (1960), Perekhodnye protsessy v asinkhronnom samovozbuzhdayushchemsya generatore pri vnezapnom korotkom zamykanii [Transients in the asynchronous self-excited oscillator with a sudden short circuit], Elektrichestvo, no. 10, pp. 23-29. [in Russian]

7. Novikov, A.V. and Kyuregyan, S.G. (1979), Emkostnoe samovozbuzhdenie asinkhronnogo generatora [Capacitive-excitation asynchronous generator], Izvestiya vuzov. Elektromekhanika, no. 2, pp. 173-179. [in Russian]

8. Schedrin, N.N. (1978), K voprosu o emkostnom vozbuzhdenii sinkhronnykh i asinkhronnykh mashin [To the question of capacitive initiate synchronous and asynchronous machines], Trudy instituta energetiki i avtomatiki, Iss. 2, pp. 5-46. [in Russian]

9. Kitsys, S.Y. (1981), Ob odnoy forme zapisi uravneniy asinkhronnoy mashiny s parallel'no vklyuchennymi kondensatorami [About one form of these equations asynchronous machine with a paralleled capacitors], Izvestija vuzov. Elektromekhanika, no. 2, pp. 35-41. [in Russian]

10. Osadchiy, Yu.M. and Kaplenko, V.K. (1979), Samovozbuzhdenie asinkhronnogo generatora so stabiliziruyushchim ustroystvom [Excitation asynchronous generator with a stabilizing device], Elektrichestvo, no. 2, pp. 45-48. [in Russian]

11. Osadchiy, Yu.M. (1977), Issledovanie rezhima raboty asinkhronnogo generatora metodom garmonicheskogo balansa [Investigation of the mode of the asynchronous generator method of harmonic balance], Izvestiya vuzov. Elektromekhanika, no. 7, pp. 612-619. [in Russian]

12. Boyar-Sozonovich, S.P. (1990), Asinkhronnye generatory. Svoystva i perspektivy [Asynchronous generators. Properties and prospects], Elektrotekhnika, no. 10, pp. 55-58. [in Russian]

13. Netushil, А.V. and Listvin, V.S. (1971), Avtonomnyy asinkhronnyy generator kak nelineynaya avtokolebatel'naya sistema [Autonomous asynchronous generator as a nonlinear oscillatory system], Izvestiya vuzov. Elektromekhanika, no. 5, pp. 500-505. [in Russian]

14. Netushil, А.V. (1978), K raschetu rezhimov samovozbuzhdeniya asinkhronnogo generatora [The calculation of modes of self-excitation asynchronous generator], Elektrichestvo, no. 4, pp. 51-53. [in Russian]

15. Kitaev, A.V. and Orlov, I.N. (1978), O fizicheskom mekhanizme samovozbuzhdeniya asinkhronnoy mashiny [The physical mechanism of self-excitation of asynchronous machines], Elektrichestvo, no. 4, pp. 47-51. [in Russian]

16. Kuntsevich, P.A. (1988), Asinkhronnyy rezonansnyy generator kak avtoperestraivaemaya avtokolebatel'naya sistema [Asynchronous resonant generator as auto overtuned self-sustained oscillation system], Cand. Sci. (Tech.) dissertation, 1988, Kuybyshevskiy ordena oktyabr'skoy revolyutsii politekhnicheskiy institut im. V. V. Kuybysheva, Kuybyshev, USSR. [in Russian]

17. Toroptsev, N.D. (2004), Asinkhronnye generatory dlya avtonomnykh elektroenergeticheskikh ustanovok [Asynchronous generators for autonomous electric power plants], NTF Energoprogress, Moscow. [in Russian]

18. Vishnevskiy, L.V. and Pass, A.E. (1990), Sistemy upravleniya asinkhronnymi generatornymi kompleksami [System control of asynchronous generator complexes], Lybid', Kiev-Odessa. [in Russian]

DETERMINATION OF INFLUENCING FACTORS OF INDUCTANCE OF SWITCHED RELUCTANCE MOTOR
Istomina N.  (download)
[in Ukrainian]

Analysis results show organization principles of operating mode of switched reluctance motor are based on phase inductance dependence on rotor rotation angle. Basic rules of phase commutation of switched reluctance motor depending on phase inductance are preconceived. The forms of mathematical formulation of phase inductance were analyzed. From mathematical formulations of this dependence two groups of influencing parameters were determined: level and angular. The coupling between maximum, minimum levels of phase inductance and electromagnetic parameters was determined. The list of factors influencing of phase inductance form were received by using blackbox. Among received list of factors and parameters the varying influencing factors were determined under support of required traction power. The varying influencing external factor is amplitude of supply voltage, the varying influencing design factor is rotor pole arc.

Key words: switched reluctance motor, phases inductance, varying influencing factors.

1. Ilinckiy, N.F. (2007), ''Electric drive in up-to-date world'', Sbornik materialov V mezhdunarodnoy (XVI Vserossiyskoy) nauchnoy konferentsii [Proceedings of V International (XVI All-Russian) Scientific Conference], St. Petersburg, September18-21, 2007, pp. 17-19. [in Russian]

2. Bychkov, M. (2007), ''Switched Reluctance Electric Drive: Up-to-date State and Prospect Trends'', Zhurnal-spravochnik «Rynok Elektrotekhniki» [Journal-guide «Market of Electrical Engineering»], available at: http://www.marketelectro.ru/ magazine/readem0207/10 (accessed March 5, 2013). [in Russian]

3. Ilinckiy, N.F. (2002), ''Switched Reluctance Electric Drive – Prospect Trends'', Vestnik Khar'kovskogo politekhnicheskogo instituta, Vol. 1, pp. 42-43. [in Russian]

4. Switched Reluctance Motor Drives, Official site of «Fleadh Electronics. Specialists in Green Power Electronics», available at: fleadh.co.uk/srm.htm (accessed March 5, 2013)

5. Tkachuk, V.I. (2006), Elektromekhanotronіka [Electric Mechatronics], Publishing house of National University «Lvivska Politechnika», Lviv. [in Ukrainian]

6. Vijayraghavan, P. (2001), ''Design of Switched Reluctance Motors and Development of a Universal Controller for Switched Reluctance and Permanent Magnet Brushless DC Motor Drives'', Dissertation for degree of Doctor of Philosophy in Electrical Engineering, 15.10.2011, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA.

7.  Kuznecov, V.A. and Kuzmichev, V.A. (2003), Ventil'no-induktornye dvigateli [Switched Reluctance Motors], Izdatel'stvo MEI, Moscow. [in Russian]

8. Malafeev, S.I. and Zakharov, A.V. (2004), Dvukhfaznyi nereversyvnyi ventilno-induktornyi dvihatel, Patent RU 2004114520/11, published 12.05.2004. [in Russian]

9. Shabaev, V.A., Kruglikov, O.V. and Tubis, Ya.B. (2009), Reversivnye ventilno-induktornye dvihateli s chyslom faz, bolshim ili ravnym trem, i dvukhpoliusnym rotorom, Patent RU 2009112014/09, published 02.04.2009. [in Russian]

10. Duijsen, P.J. van (2007), Multilevel Modeling and Simulation of a Switched Reluctance Mashine, Simulation Research, The Netherlands, 8 p.

11. Miller, T.J.E. (1993), Switched Reluctance Motors and their Control, Magna Physics & Clarendon Press, Oxford, pp. 257-262.

12. Ahn, Jin-Woo (2011), Switched Reluctance Motor, Kyungsung University, Korea.

13. Krishnan, R. (2001), Switched Reluctance Motor Drives: Modeling, Simulation, Analysis, Design, and Applications, CRC Press LLC, Boca Raton, Florida.

14.  Firago, B.I. and Pavliachyk, L.B. (2006), Reguliruemye elektroprivody peremennogo toka [Controlled Alternating Current Drive], Technoperspectiva, Minsk. [in Russian]

15. (2010) Laboratornyy praktikum po fizike. Chast' 1. Mekhanika [Laboratory training session on physics. Part 1. Mechanics] / Edited by Avenarius, I. and Afanasev, B., State Technical University MADI, Moscow. [in Russian]

16. Turyishev, M., Shelihov, V., Kuchin, V., et al. (2008), Novye otkrytiya v mekhanike dinamike [New in Mechanics], OOO”VELMA”, Moscow. [in Russian]

17. Istomina, N. and Bačko, M. (2013), Determination of inductance levels of switched reluctance motor,  13th Scientific Conference of Young Researchers, Košice, FEI TU of Košice, May 14, 2013, pp. 307–309.

18.  Fisenko, V.G. and Popov, A.N. (2006), Proektirovanie ventil'nykh induktornykh dvigateley [Designing of Switched Reluctance Motors Izdatel'stvo MEI, Moscow. [in Russian]