Energy efficiency of permanent magnet synchronous motor operation on longwall belt conveyor

The article discusses energy efficiency of operation of a permanent magnet synchronous motor on a longwall belt conveyor in a coal mine. The study is carried out for a standard high-production longwall in the Alarda Mine of Yuzhkuzbass Company. An analytical pro cedure is developed to calculate specific energy consumption by a twin-motor asynchronous drive and by a drive with permanent magnet synchronous motors on a belt conveyor at the varied parameters of coal flow, with regard to the dependence of the drive efficiency on its load factor for the shuttle and one-way operation of a cutter–loader. The dependences of the drive efficiency of the belt conveyor on the conveyor load factor are determined. The specific energy consumptions of the conveyor drive during mining a longwall 450 m long are correlated with the coal seam cuttability for the twin-motor asynchronous drive and for the twin-motor drive with permanent magnet synchronous motors in the shuttle and one-way operation of a cutter–loader.

Babokin G. I., Shprekher D. M., Ovsyannikov D. S. Energy efficiency of permanent magnet synchronous motor operation on longwall belt conveyor. MIAB. Mining Inf. Anal. Bull. 2025;(1):141-153. [In Russ]. DOI: 10.25018/0236_1493_2025_1_0_141.

G.I. Babokin¹, Dr. Sci. (Eng.), Professor, Professor, e-mail: babokinginov@yandex.ru,
D.M. Shprekher^1,2, Dr. Sci. (Eng.), Assistant Professor, Professor, e-mail: shpreher-d@yandex.ru,
D.S. Ovsyannikov², Graduate Student, e-mail: ovsyannikov_d_s@mail.ru,
¹ NUST MISIS, 119049, Moscow, Russia,
² Tula State University, 300012, Tula, Russia

D.M. Shprekher, e-mail: shpreher-d@yandex.ru.

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