Sage Journals: Discover world-class research

Abstract

The magnetic gears which can replace the mechanical gear system are actively studied recently. Improving the power density is growing importance because the characteristics that as gear ratio grows so power density decreases were observed. This paper analyzes the various characteristics (power density, efficiency, torque ripple, loss, and so on) according to the gear ratio in detail, and proposes a concept that high gear ratio by combining two low gear ratio. A target gear ratio is 10 to 1 and application is 1 kW wind turbine. To obtain the optimal combination, 30 gear ratios were considered, and initial design process was shown about this concept to propose the direction of improving the power density. All models were analyzed with 2D-FEM by numerical analysis.

Keywords

Finite element analysis magnetic gears power density high gear ratio

Get full access to this article

View all access options for this article.

References

Teng

Ding

Zhang

Liu

and Ma

, Multi-fault detection and failure analysis of wind turbine gearbox using complex wavelet transform, Renew. Energy 93 (2016), 591–598.

Shi

Wang

and Cao

, Fault simulation and modeling of wind turbine gear based on ADAMS, in: 2011 6th Int. Conf. Pervasive Computing and Applications, 2015, pp. 535–539.

Jin

and Liu

, Reliability analysis of wind turbine gear box based on fault tree and Bayesian network, in: 2017 29th Chinese Control and Decision Conf., 2017, pp. 4681–4686.

Desvaux

Traulle

Latimier

R.L.G.

and Sire

, Computation time analysis of the magnetic gear analytical model, IEEE Trans. Magn. 53 (2017), 7000409.

Lee

and Chang

, Analysis of the vibration characteristics of coaxial magnetic gear, IEEE Trans. Magn. 53 (2017), 8105704.

Filippini

and Alotto

, Coaxial magnetic gear design and optimization, IEEE Tran. Ind. Electron. 64 (2017), 9934–9942.

Rasmussen

P.O.

Anderson

T.O.

Jorgensen

F.T.

and Nielsen

, Development of a high performance magnetic gear, IEEE Trans. Ind. 41 (2005), 764–770.

Frank

N.W.

and Toliyat

H.A.

, Gearing ratios of a magnetic gear for wind turbines, IEEE Int. Elec. Machines and Drives Conf (2009), 1224–1230.

Atallah

and Howe

, A novel high-performance magnetic gear, IEEE Trans. Magn. 37 (2001), 2844–2846.

10.

Kim

C.H.

Jung

S.Y.

and Kim

Y.J.

, A comparative analysis of power density for single-stage and dual-stage magnetic gear with rare-earth magnets and non rare-earth magnets, Int. Journal of Applied Electromagnetics and Mechanics 51 (2016), 83–89.

11.

Park

E.J.

Kim

S.J.