Energy-efficient ac electric traction drive and study about its modification

Mining industry new goals achievement and modern challenges overcoming ask for new requirements for the reliability and service of manufacturing equipment. A large number of DC commutator machine in mining electric drives and facilities not only requires qualified periodic maintenance, but also fails to meet modern energy efficiency request. Therefore a trend towards AC electric drives is emerged. The current paper presents the unique synchronous electric motor based of fractional-slot concentrated winding and high-coercive permanent magnets excitation for a mine electric locomotive. Such electric motors are superior to induction motors and classical synchronous motors with electromagnetic excitation in terms of mass-dimensions parameters and efficiency. The advantage of the developed electric motor in comparison with the analogue is shown. However the disadvantage of fractionalslot concentrated winding is the complex harmonic content of the generated magnetic field. A study of developed electric motor modification in order to reduce this demerit is carried out. The approach of stator shifting winding is selected. Methods for characteristic criterion calculation with the finite element analysis application are presented. A possible electric motor characteristics improvement with suggested modification for different shifting angle is shown. The value of shifting angle that provides the highest performance improvement is chosen.

Babitsky D. Yu., Nikulin R. O. Energy-efficient ac electric traction drive and study about its modification. MIAB. Mining Inf. Anal. Bull. 2022;(12-2):34—46. [In Russ]. DOI: 10.25018/0236_1493_2022_122_0_34.

This work was supported in part of the Novosibirsk State Technical University development program, no. S21-25 “Analysis of modern ways of magnetic field harmonic content improvement in electrical machines with fractional-slot concentrated windings”.

Babitsky D. Yu., assistant at the Department of Electromechanics, https://orcid.org/00000002-2044-4675, Novosibirsk State Technical University, 630073, Novosibirsk, Karl Marx Ave., 20, Russia, e-mail: denibaks@gmail.com;
Nikulin R. O., junior researcher, Novosibirsk State Technical University, 630073, Novosibirsk, Karl Marx Ave., 20, Russia, e-mail: roma99352@gmail.com.

Babitsky D. Yu., e-mail: denibaks@gmail.com.

1. Stepanenko V. P. Ways to improve energy efficiency and resource saving mining locomotive transport. MIAB. Mining Inf. Anal. Bull. 2016, no. 9, pp. 128–137. [In Russ].

2. Kubrin S. S., Reshetnyak S. N., Bondarenko A. M. Impact of technology factors on specific power demands of equipment in extraction districts of coal mines. MIAB. Mining Inf. Anal. Bull. 2020;(2):161−170. [In Russ]. DOI: 10.25018/0236-1493-2020-2-0−161−170.

3. Babokin G. I., Shprekher D. M. Enhancement of energy efficiency in fully mechanized longwall mining. MIAB. Mining Inf. Anal. Bull. 2021, no. 9, pp. 122–134. [In Russ]. DOI: 10.25018/0236_1493_2021_9_0_122.

4. Malafeev S. I., Malafeev S. S. Analyzing energy processes in power line of operating open-pit excavator. MIAB. Mining Inf. Anal. Bull. 2020, no. 3 pp. 126–137. [In Russ]. DOI: 10.25018/0236-1493-2020-3-0−126−137.

5. Stepanenko V. P., Sorin L. N. The efficiency of underground locomotive haulage with hybrid energy storage. MIAB. Mining Inf. Anal. Bull. 2015, no. 6, pp. 135–140. [In Russ].

6. Khoshmukhamedov I. M., Kosareva-Volodko O. V. Reliability of electric motors of open pit mine shovels. MIAB. Mining Inf. Anal. Bull. 2018, no. 9, pp.151–156. [In Russ]. DOI: 10.25018/0236-1493-2018-12−0-151−156.

7. Kolesnik I. K., Chernjak Ju. V., Gorobchenko A. N. Analysis of fault conditions of the electric locomotive DE1. Sbornik nauchnyh trudov DonIZhT. 2005, no. 1, pp. 38–46. [In Russ].

8. Jurchenko O. N., Sinchuk I. O., Guzov Je. S., Shokarev D. A., Skapa E. I. Designing aspects of induction electrical complex of mine battery-trolley electric locomotives. VostochnoEvropejskij zhurnal peredovyh tehnologij. 2015, vol. 1, no. 8, pp. 21–26. [In Russ].

9. Abramov B. I., Ivanov A. G., Shilenkov V. A., Kuzmin I. K., Shevyrev Yu. V. Electric drive of modern mining machines. MIAB. Mining Inf. Anal. Bull. 2022, no. 5−2, pp. 145–162. [In Russ]. DOI: 10.25018/0236_1493_2022_52_0_145.

10. Shevchenko A. F. Pristup A. G., Novokreshchenov O. I., Toporkov D. M., Korneev V. V. Construction and design features of permanent magnet electric motors for general industrial purposes. Russian Electrical Engineering. 2014, vol. 85, no. 12, pp. 748–751. [In Russ]. DOI: 10.3103/S106837121412013X.

11. Shevchenko A. F. Chestyunina T. V. Analysis of magnetomotive forces of fractionalslot windings of electrical machines. Russian Electrical Engineering. 2009, vol. 80, no.12, pp. 641–645. [In Russ]. DOI: 10.3103/S1068371209120013.

12. Pristup A. G., Korneev V. V. Eddy current losses in the rotor magnets of the emergency dynamic braking generator. Jelektro. Jelektrotehnika, jelektrojenergetika, jelektrotehnicheskaja promyshlennost’. 2016, no. 3, pp. 21–25. [In Russ].

13. Pahomin S. A., Pahomin L. S. Magnetic losses in the stator of a permanent magnet motor. Izvestija vysshih uchebnyh zavedenij. Jelektromehanika. 2017, vol. 60, no. 5, pp. 18–24. [In Russ]. DOI 10.17213/0136-3360-2017-5-18−24.

14. Chen Y. S., Zhu Z. Q., Howe D. Vibration of PM Brushless Machines Having a Fractional Number of Slots Per Pole. IEEE Transactions on Magnetics. 2006, vol. 42, no. 10, pp. 3395–3397. DOI: 10.1109/TMAG.2006.879072.

15. Zhu S., Ji J., Zhao W., Zheng J., Mao Y. Liu G. Unequal teeth design to reduce electromagnetic vibration in fractional-slot concentrated-windings permanent-magnet machine. Journal of Magnetics. 2019, vol. 24, no. 4, pp. 657–667. DOI 10.4283/ JMAG.2019.24.4.657.

16. Dajaku G., Xie W., Gerling D. Reduction of Low Space Harmonics for the Fractional Slot Concentrated Windings Using a Novel Stator Design. IEEE Transactions on Magnetics. 2014, vol. 50, no. 5, pp. 1–12. DOI: 10.1109/TMAG.2013.2294754.

17. Liu G., Zhai F., Chen Q., Xu G. Torque Pulsation Reduction in Fractional-Slot Concentrated-Windings IPM Motors by Lowering Sub-Harmonics. IEEE Transactions on Energy Conversion. 2019, vol. 34, no. 4, pp. 2084–2095. DOI: 10.1109/TEC.2019.2935016.

18. Li F., Wang K., Li J., Zhang H. J. Suppression of Even-Order Harmonics and Torque Ripple in Outer Rotor Consequent-Pole PM Machine by Multilayer Winding. IEEE Transactions on Magnetics. 2018, vol. 54, no. 11, pp. 1–5. DOI: 10.1109/ TMAG.2018.2839740.

19. Liu D., Song X., Dong J. Performance of multi-layer and stator-shifting fractionalslot concentrated windings for superconducting wind turbine generators under normal and short-circuit operation conditions. IEEE Transactions on Applied Superconductivity. 2020, vol. 30, no. 4, pp. 1–5. DOI: 10.1109/TASC.2020.2971436.

20. Barcaro M., Bianchi N., Magnussen F. Analysis and Tests of a Dual Three-Phase 12-Slot 10-Pole Permanent-Magnet Motor. IEEE Transactions on Industry Applications. 2010, vol. 46, no. 6, pp. 2355–2362. DOI: 10.1109/TIA.2010.2070784.

21. Abdel-Khalik A. S., Gadoue S., Ahmed S. A Nine-phase Six-Terminal FractionalSlot-Winding for Interior Permanent-Magnet Machines with Low Space Harmonics. 2018 XIII International Conference on Electrical Machines (ICEM). 2018, pp. 499–505. DOI: 10.1109/ICELMACH.2018.8506749.

22. Reddy P. B., Huh K., EL-Refaie A. M. Generalized Approach of Stator Shifting in Interior Permanent-Magnet Machines Equipped With Fractional-Slot Concentrated Windings. IEEE Transactions on Industrial Electronics. 2014, vol. 61, no. 9, pp. 5035–5046. DOI: 10.1109/TIE.2013.2297515.

23. Zhu S., Cox T., Xu Z., Gerada C. Novel 24-slots14-poles fractional slot concentrated winding topology with low-space harmonics for electrical machine. The Journal of Engineering. 2019, vol. 2019, no. 17, pp. 3784–3788. DOI: 10.1049/joe.2018.8085.

24. Babitskii D. Y., Toporkov D. M., Pristup A. G., Temlyakova Z. S. Methods to Improve the Harmonic Composition of the Magnetic Field in Electric Machines with Fractional Slot Winding. Russian Electrical Engineering. 2021, vol. 92, no. 6, pp. 320–325. [In Russ]. DOI: 10.3103/S1068371221060079.

25. Pristup A. G., Toporkov D. M., Shevchenko A. F. A study of cogging torque in permanent magnet synchronous machines with fractional slot windings. Russian Electrical Engineering. 2014, vol. 85, no. 12, pp. 743–747. [In Russ]. DOI: 10.3103/S1068371214120128.

26. Ruoho S., Santa-Nokki T., Kolehmainen J., Arkkio A. Modeling Magnet Length In 2-D Finite-Element Analysis of Electric Machines. IEEE Transactions on Magnetics. 2009, vol. 45, no. 8, pp. 3114–3120. DOI: 10.1109/TMAG.2009.2018621.

27. Shevchenko A. F., Salah A. A. M. S., Zhulovjan V. V. Influence of inductunce parameters on the characteristics of a magnetoelectric motor. Doklady Akademii nauk vysshej shkoly Rossijskoj Federacii. 2012, no. 1, pp. 141–149. [In Russ].

28. Bukhol’ts Yu. G., Pristup A. G., Chestyunina T. V. Determining inductances of permanent-magnet machine with single-slot windings. Russian Electrical Engineering. 2011, vol. 82, no. 6, pp. 302–306. [In Russ]. DOI: 10.3103/S1068371211060058.

29. Babitsky D., Toporkov D. Investigation and improvement of flux density harmonic content in electrical machines with fractional slot tooth concentrated windings. 2019 International Conference on Electrotechnical Complexes and Systems (ICOECS). 2019, pp. 1–4. DOI: 10.1109/ICOECS46375.2019.8949963.