1426-5915 Increasing energy performance of urban electric transport Wzrost wydajności energetycznej miejskiego transportu elektrycznego Shpika Nicolay author Smyrnyi Mykhailo author Herasymenko Vitalii author Pryanicka Valentina author Department. of Electric Transport, Faculty of Transport System and Technology, O.M. Beketov National University of Urban Economy in Kharkiv, Marshala Bazhanova 17, 61002 Kharkiv, Ukraine Department of Electric Transport, Faculty of Transport System and Technology, O.M. Beketov National University of Urban Economy in Kharkiv, Marshala Bazhanova 17, 61002 Kharkiv, Ukraine Department of Foreign Languages, Faculty of Management, O.M. Beketov National University of Urban Economy in Kharkiv, Marshala Bazhanova 17, 61002 Kharkiv, Ukraine Correspondence to: Nicolay Shpika niset53@yandex.ua Correspondence to: Mykhailo Smyrnyi mfsmirny@gmail.com Correspondence to: Vitalii Herasymenko twixvi@gmail.com Correspondence to: Valentina Pryanicka pryanickaya.valentina@gmail.com 29 03 2019 22 (1) 2019 44 51 Copyright © 2019 2019 <p> In the 21st century new approaches to urban electric transport improvement are required. As a tram is one of the best means of passenger transportation it is essential to enhance its operation. So the aim of this article is to consider improving the energy performance of the electric traction drive of urban electric transport by improving its electrical equipment. The analysis of traction systems of electric trams which are in operation in the cities of Ukraine is carried out, their disadvantages are displayed. A new structure and control algorithms for the electric traction drive system with pulse converters of tram cars are proposed. The structure makes it possible to reduce the number of semiconductor devices in pulse converters and improve the energy performance of the electric traction drive.It allows to reverse tram trajectory without using contact equipment,to provide a smooth field weakening of traction motors, limit the voltage of the traction motors at the nominal level, provide redundancy of the equipment in pulse converters, as well as ensure electric braking. A modernized field attenuation circuit using a DC/DC converter for traction electric motors of sequential excitation is suggested. The results of research are given. The comparative characteristics of various traction drive systems in terms of energy indicators are provided.</p> 1 Andrіjchenko V. P., Kostenko І. O., Gerasimenko V. A., 2012, Patent N73041 Ukraїna. 2012, N02R 7/00 Sposіb oslablennya polya tyagovogo elektrodviguna poslіdovnogo zbudzhennya, Kharkiv National Academy of Municipal Economy, 17. 2 Besarab A. І., M., Shpіka І., Andrіjchenko V. P., 2005, Patent N101885 Ukraїna. MPK, 2015, N02R 7/00/ Pristrіj keruvannya tyagovimi elektrodvigunami poslіdovnogo zbudzhennya elektroruxomogo składu, Kharkiv National Academy of Municipal Economy, 19. 3 Cherny M., Kachimov V., 2009, Vnedrenie energoeffektivnogo oborudovaniya i texnologij na podvizhnom sostave gorodskogo elektrotransporta Ukrainy, [in:] M. Cherny, V. Kachimov (eds.), Kommunalnoe Xozyajstvo gorodov.Nauchno-texnicheskij sbornik, Seriya: Texnicheskie Nauki, Kiev, Texnіka, 88, 354-359. 4 Daleka V. F. 2009, Energosberegayushhij tyagovyj elektroprivod gorodskogo elektrotransporta, [in:] V. F. Daleka, A. V. Donec, N. I. Shpika (eds.), Kommunalnoe xozyajstvo gorodov. Nauchno-texnicheskij sbornik, Seriya: Texnicheskie nauki, Kiev: Texnіka, 88, 236-242. 5 Felea I, Csuzi I, Barla E,. 2013, Modelling and Assessing Energy Performance of an Urban Transport System with Electric Drives, Promet – Traffic&amp;Transportation, 25(5), 495-506. 6 Koryagina E. E., Koskin O. A., 1982, Elektrooborudovanie tramvaev i trollejbusov, Uchebnik dlya texnikumov gorodskogo transporta. M: Transport. 7 Kramarenko R. M., 2008, Stan ta osnovnі napryamki udoskonalennya roboti mіskogo elektrichnogo transportu v suchasnix umovax, [in:] R. M. Kramarenko (eds.), Mіzhnarodna konferencіya і texnіchna vistavka: Mіskij elektrotransport. Zabezpechennya stalogo funkcіonuvannya і rozbitku, Zbіrka dopovіdej. Ukraїna, Yalta, 8-18. 8 Krivovyaz V. K., Vasilev P., Maevskij V., 2007, Tyagovyj elektroprivod postoyannogo toka modernizirovannogo tramvajnogo vagona Tatra-3E, Silovaya Elektronika, 3, 36-38. 9 Shpika N. I., 2007, Voprosu modernizacii tyagovyx elektroprivodov gorodskogo elektrotransporta, [in:] N. I. Shpika, A. V. Donec (eds.), Kommunalnoe Xozyajstvo gorodov. Nauchno-texnicheskij sbornik, Seriya: Texnicheskie Nauki i Arxitektura, Kiev: Texnіka, 76, 354-359. 10 Veg L., Laksar J., Pechanek R., 2017, Overview of different concepts of traction drives with regard to high-speed PMSM, 18th International Scientific Conference on Electric Power Engineering (EPE) IEEE, 1-5. 11 Zabarskij L. V., 1976, Rezultaty ispytanij opytnyx obrazcov tiristornyx regulyatorov tipa RT 300/700 na podvizhnom sostave, Nauka i texnika v Gorodskom Xozyajstve, 33, 13-19.