Journals →  Gornyi Zhurnal →  2020 →  #5 →  Back

ArticleName Selecting electric drives for large mills
DOI 10.17580/gzh.2020.05.10
ArticleAuthor Shevyrev Yu. V., Datskovskiy L. Kh., Boguslavskiy I. Z.

College of Mining, NUST MISIS, Moscow, Russia:

Yu. V. Shevyrev, Professor, Doctor of Engineering Sciences,
L. Kh. Datskovskiy, Candidate of Engineering Sciences
I. Z. Boguslavskiy, Professor, Doctor of Engineering Sciences


The article discusses selection of an electric drive for large mills with the installed drive power above 4000 kW. The scope of the studies embraced two types of drives: direct drive with high-torque synchronous motor in the cycloconverter–synchronous motor configuration (CC–SM) and dual-motor drive with asynchronous motors and phase-wound rotor in the configuration of the wound-rotor slip recovery system (ASR) or double-way feed machine (DWF). The drive with asynchronous motors has gearing: crown wheel on mill drum—motor pinions. The synchronous drive with CC is unlimited in terms of power, enables capital construction cost cut, and ensures higher efficient and improves the mill performance owing to mill velocity optimization. The operation of two asynchronous motors with phase rotor and single shaft introduces some features in distribution of loads between the motors. Comparison of the two types of electric drives shows that the CC–SM configuration drive brings higher capital expenses but is advantageous in terms of specifications and performance, while the drive based on the asynchronous motors and a phase rotor has power constrains due to the limited crown wheel–pinion torque transfer and features high operating costs.

keywords Mill, cycloconverter, synchronous motor, wound-rotor slip recovery system, double-way feed machine, higher harmonics, subordinate control of variable, distribution of loads

1. Karmazin V. I. Dressing of ferrous metal ore : textbook. Moscow : Nedra, 1982. 215 p.
2. Shpiganovich A. A., Fedorov O. V., Pushnitsa K. A., Churkina E. V. Operating features of electric power supply systems at the iron and steel works. Chernye metally. 2017. No. 5. pp. 56–61.
3. Reshetnyak S., Bondarenko A. Analysis of technological performance of the extraction area of the coal mine. III International Innovative Mining Symposium. 2018. E3S Web of Conferences. 2018. Vol. 41. 01014. DOI: 10.1051/e3sconf/20184101014
4. Khopunov E.A. The reasons for low energy efficiency of mineral raw materials grinding processes. Izvestiya vuzov. Gornyi zhurnal. 2015. No. 4. pp. 98–100.
5. Nikiforov S. E., Lagunova Yu. A., Kalyanov A. E. Features of the design of the drum mills produced by Uralmashzavod. Gornoe oborudovanie i elektromekhanika. 2018. No. 1(135). pp. 22–26.
6. Abramov B. I., Datskovskiy L. Kh., Kuzmin I. K., Pridatkov A. G., Limorenko P. M. Motor soft starters in electric drives used in mining machinery. Russian Electrical Engineering. 2014. Vol. 85, Iss. 1. pp. 18–25.
7. Slezhanovskiy O. V., Datskovskiy L. Kh., Kuznetsov I. S., Lebedev E. D., Tarasenko L. M. Systems of s ubordinate control for alternating current drives with valve frequency converters. Moscow : Energoatomizdat, 1983. 256 p.
8. Stemmler H., Kobi H., Steimer P. A new high-speed controller with simple program language for the control of variable-speed converter-fed AC-drives. Proceedings of the 15th Annual IEEE Power Electronics Specialists Conference. Gaithersburg, 1984. DOI: 10.1109/PESC.1984.7083480
9. Milešević B., Uglešić I., Filipović-Grčić B. Power quality analysis in electric traction system with three-phase induction motors. Electric Power Systems Research. 2016. Vol. 138. pp. 172–179.
10. Boudebbouz O., Boukadoum A., Medoued A. Effective electric power quantities and the s equence reference frame: A comparison study. Electric Power Systems Research. 2016. Vol. 140. pp. 485–492.
11. Yoon J. Motors, drives, and HVAC efficiency. Consulting – Specifying Engineer. 2016. N o. 1. pp. 50–63.
12. Pollefliet J. Power Electronics: Drive Technology and Motion Control. London : Academic Press, 2017. 412 p.
13. Shevyrev Yu. V., Shevyreva N. Yu., Plekhov A. S., Titov D. Yu. Computer modeling for electric power control in operation of motors with semiconductor converters. Nizhniy Novgorod : Nizhegorodskiy gosudarstvennyi tekhnicheskiy universitet im. R. E. Alekseeva, 2018. 180 p.
14. Lyakhomskiy A. V., Plashchansky L. A., Reshetnyak S. N., Reshetnyak M. Yu. High-voltage unit for automated monitoring of electrical energy quality in underground networks of coal mines. GIAB. 2019. No. 7. pp. 207–213.
15. Boguslavskiy I. Z. Features of six-phase winding for dirty power machines. Izvestiya Rossiyskoy akademii nauk. Energetika. 1997. No. 5.
16. Frolov K. V. (Ed.). Mechanical engineering : encyclopedia. Moscow : Mashinostroenie, 2012. Vol. IV-2. The electric drive. Hydro and vibration drives. Book 1. The electric drive. 520 p.
17. Datskovskii L. Kh., Boguslavskii I. Z., Abramov B. I., Ivanov A. G., Mordukhovich V. B. Electriс drives of large-size mills in the mining industry and in cement production. Russian Electrical Engineering. 2018. No. 7. pp. 64–78.

Language of full-text russian
Full content Buy