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Energies 2018, 11(1), 192; https://doi.org/10.3390/en11010192

Design and Experimental Verification of a 72/48 Switched Reluctance Motor for Low-Speed Direct-Drive Mining Applications

1
School of Electrical Engineering, Dalian University of Technology, Dalian 116023, China
2
Faculty of Engineering, Blue Nile University, Ad-Damazin 26613, Blue Nile State, Sudan
3
School of Engineering and Applied Science, Aston University, Birmingham B4 7ET, UK
*
Author to whom correspondence should be addressed.
Received: 12 December 2017 / Revised: 6 January 2018 / Accepted: 10 January 2018 / Published: 12 January 2018
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Abstract

Typically, a geared drive system is used to connect an induction motor of 1500 rpm with a Raymond Pulverizer of 105 rpm in mining applications. This system suffers from low efficiency and a heavy motor drive. This paper proposes a novel design of a 75 kW, 72/48 switched reluctance motor (SRM) for a low-speed direct-drive as for mining applications. The paper is focused on the design and comparative evaluation of the proposed machine in order to replace a geared drive system whilst providing a high torque low-speed and direct-drive solution. The machine performance is studied and the switching angle configuration of the machine is also optimised. The efficiency of the whole drive system is found to be as high as 90.19%, whereas the geared induction motor drive provides only an efficiency of 59.32% under similar operating conditions. An SRM prototype was built and experimentally tested. Simulation and experimental results show that the drive system has better performance to substitute the induction motor option in mining applications. View Full-Text
Keywords: direct drive; geared motor drive; low speed; Raymond Pulveriser; switched reluctance motor; turn-on and turn-off angles direct drive; geared motor drive; low speed; Raymond Pulveriser; switched reluctance motor; turn-on and turn-off angles
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Elhomdy, E.; Li, G.; Liu, J.; Bukhari, S.; Cao, W.-P. Design and Experimental Verification of a 72/48 Switched Reluctance Motor for Low-Speed Direct-Drive Mining Applications. Energies 2018, 11, 192.

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