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Machines 2018, 6(1), 4; https://doi.org/10.3390/machines6010004

Characteristics Analysis and Comparison of High-Speed 4/2 and Hybrid 4/4 Poles Switched Reluctance Motor

Department of Mechatronics Engineering, Kyungsung University, Busan 48434, Korea
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Received: 1 January 2018 / Revised: 23 January 2018 / Accepted: 25 January 2018 / Published: 26 January 2018
(This article belongs to the Special Issue High Speed Motors and Drives: Design, Challenges and Applications)

Abstract

This paper presents a characteristics analysis and performance comparison of high-speed two-phase 4/2 and hybrid single-phase 4/4 switched reluctance motors (SRMs). Although the motors are advantageous as high-speed drives, both conventional structures have high torque ripple as a result of the presence of the torque dead zone. In this paper, solutions to the torque dead zone problem for each motor are discussed. For the 4/2 SRM, a wide-rotor stepper-type is adopted, while for the 4/4 SRM, the structure is changed to a hybrid by adding permanent magnets (PMs). Both motors have a non-uniform air gap to modify their inductance profile, which leads to the elimination of the torque dead zone. A finite-element method was used to analyze the characteristics of each motor. Then, the manufactured motors were tested through experiments, and lastly, their performance was compared. View Full-Text
Keywords: high-speed; switched reluctance motor (SRM); two-phase 4/2 SRM; single-phase 4/4 SRM; non-uniform air gap high-speed; switched reluctance motor (SRM); two-phase 4/2 SRM; single-phase 4/4 SRM; non-uniform air gap
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Lukman, G.F.; Hieu, P.T.; Jeong, K.-I.; Ahn, J.-W. Characteristics Analysis and Comparison of High-Speed 4/2 and Hybrid 4/4 Poles Switched Reluctance Motor. Machines 2018, 6, 4.

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