{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,14]],"date-time":"2025-10-14T00:50:28Z","timestamp":1760403028069,"version":"build-2065373602"},"reference-count":37,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2022,1,13]],"date-time":"2022-01-13T00:00:00Z","timestamp":1642032000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Operational Program Integrated Infrastructure 2014 - 2020","award":["ITMS 313011V334"],"award-info":[{"award-number":["ITMS 313011V334"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>The analysis of operating conditions of traction drives of electric locomotives with asynchronous traction motors has been carried out. It was found that during operation in the output converter of an asynchronous motor, defects may occur, which leads to asymmetric modes of its operation. Models of a traction drive of an electric locomotive with asynchronous motors with scalar and vector control of the output converter are proposed, taking into account asymmetric operating modes. As a result of the simulation, the starting characteristics of the traction drive were obtained for various control methods both in normal and emergency modes of the drive. For the drive-in emergency mode, the following cases were investigated: the balance of the converter output voltages and the turn-to-turn circuit of 10% of phase A winding of the motor stator; imbalance of the output voltages of the inverter and an intact motor; imbalance of the output voltages of the converter and interturn short circuit of 10% of phase A winding of the motor stator. Comparison of the simulation results have shown that in emergency modes in the traction drive, the torque ripple on the motor shaft in the drive with vector control is 13% less, and in scalar control, the phase current unbalance coefficient is 22% less. The results of this work can be used to study the influence of the output converter control methods on the energy efficiency indicators of the traction drive of an AC electric locomotive.<\/jats:p>","DOI":"10.3390\/sym14010150","type":"journal-article","created":{"date-parts":[[2022,1,14]],"date-time":"2022-01-14T03:14:56Z","timestamp":1642130096000},"page":"150","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Analysis of Control Methods for the Traction Drive of an Alternating Current Electric Locomotive"],"prefix":"10.3390","volume":"14","author":[{"given":"Sergey","family":"Goolak","sequence":"first","affiliation":[{"name":"Department of Electromechanics and Rolling Stock of Railways, State University of Infrastructure and Technologies, Kyrylivska Str., 9, 04071 Kyiv, Ukraine"}]},{"given":"Viktor","family":"Tkachenko","sequence":"additional","affiliation":[{"name":"Department of Electromechanics and Rolling Stock of Railways, State University of Infrastructure and Technologies, Kyrylivska Str., 9, 04071 Kyiv, Ukraine"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1128-7644","authenticated-orcid":false,"given":"Pavol","family":"\u0160\u0165astniak","sequence":"additional","affiliation":[{"name":"Department of Transport and Handling Machines, University of \u017dilina, Univerzitn\u00e1 8215\/1, 010 26 \u017dilina, Slovakia"}]},{"given":"Svitlana","family":"Sapronova","sequence":"additional","affiliation":[{"name":"Department of Cars and Carriage Facilities, State University of Infrastructure and Technologies, Kyrylivska Str., 9, 04071 Kyiv, Ukraine"}]},{"given":"Borys","family":"Liubarskyi","sequence":"additional","affiliation":[{"name":"Department of Electrical Transport and Diesel Locomotive, National Technical University \u00abKharkiv Polytechnic Institute\u00bb, Kyrpychova Str., 2, 61002 Kharkiv, Ukraine"}]}],"member":"1968","published-online":{"date-parts":[[2022,1,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"831","DOI":"10.1016\/j.trpro.2019.07.117","article-title":"Research of Possibilities of Reducing the Driving Resistance of a Railway Vehicle by Means of the Wheel Construction Improvement","volume":"40","author":"Mikhailov","year":"2019","journal-title":"Transp. 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