Torque density design optimization of rotating pole piece concentric magnetic gear

Mohd Ab Halim, Mohd Firdaus and Sulaiman, Erwan and Aziz, Roziah and Raja Othman, Raja Nor Firdaus Kashfi and Ab Rahman, Azhan (2022) Torque density design optimization of rotating pole piece concentric magnetic gear. Arabian Journal for Science and Engineering, 47 (3). pp. 2797-2806. ISSN 2193-567X

Text MOHD FIRDAUS MOHD AB HALIM_GE190032 PUBLICATION_1.PDF Restricted to Registered users only Download (2MB)

Abstract

Concentric magnetic gear (CMG) can achieve a torque density of more than 150 kN m/m3 through several modifcations of the original structure and the removal of material volume. However, the complexity of such a system may be impractical to assemble and realize. CMG with an alternative condition where the pole piece acts as the outer rotor can deliver higher torque instead of outer pole pair on the same structure. This unconventional condition was known since CMG inception, but it inherits the problem similar to the reluctance machine of high torque ripple. In this paper, a considerably high torque density rotating pole piece magnetic gear is proposed. Several pole pair combinations were evaluated that could yield the highest torque density at lower torque ripple. The best pole pair combination was then optimized through the width reduction of three elements, namely the pole piece, the inner yoke and the outer yoke. By enhancing the structure with the best pole pair combination, the highest torque density achieved was 364.5 kNm/m3. At the same time, the torque ripple was ably kept at below 15%. Unlike other complex structures that yield high torque density, the proposed structure is simpler, easier to assemble and hence should be more cost efective to be produced.

Item Type:	Article
Uncontrolled Keywords:	Magnetic gear (MG), Torque density, Speed increaser, Torque increaser, Torque ripple, Power density, Flux modulation
Divisions:	Faculty of Electrical Engineering
Depositing User:	Norfaradilla Idayu Ab. Ghafar
Date Deposited:	06 Mar 2023 15:13
Last Modified:	06 Mar 2023 15:13
URI:	http://eprints.utem.edu.my/id/eprint/26438
Statistic Details:	View Download Statistic

Actions (login required)

View Item