A flux focusing ferrite magnetic gear

Uppalapati, K.; Bird, Jonathan Z.

doi:10.1049/cp.2012.0303

Cited by 24 publications

(15 citation statements)

References 9 publications

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“…6b, which reduces PM material by introducing salient leakage poles while still maintaining high torque density. Considering the current high PM cost, there were also attempts to use more affordable PMs such as ferrite magnets [55]. [46], (c) flux concentration [54], (d) halbach array [53].…”

Section: Design Aspects Of Inner and Outer Rotorsmentioning

confidence: 99%

Magnetic gear technologies: A review

Tlali

Wang

Gerber

2014

2014 International Conference on Electrical Machines (ICEM)

100

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This paper reviews the historic and current development of magnetic gear technologies. There has been considerable amount of research and development activities on magnetic gear technologies in recent years. However, it is still not clear if this technology is ready for potential industry applications. The purpose of this paper is to summarize the historic and current development work of magnetic gear technologies in an attempt to give readers some insight into the advantages and disadvantages, challenges, opportunities and technology readiness.

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Section: Design Aspects Of Inner and Outer Rotorsmentioning

confidence: 99%

Magnetic gear technologies: A review

Tlali

Wang

Gerber

2014

2014 International Conference on Electrical Machines (ICEM)

100

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“…Radial-flux MG is the most basic type of topology which combines a highly competitive torque transmission capability with very high efficiency [3][4][5]. The choices of design…”

Section: Introductionmentioning

confidence: 99%

A Novel Hybrid-Flux Magnetic Gear and Its Performance Analysis Using the 3-D Finite Element Method

Chen

2015

Energies

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This paper presents a novel hybrid-flux magnetic gear, which integrates a transverse-flux magnetic gear and an axial-flux magnetic gear into a single unit. Compared to its conventional counterparts, the proposed magnetic gear transmits a relatively high torque density. When compared to the transverse-flux magnetic gear, this new structure employs an extra iron segment between the low-speed rotor and high-speed rotor to modulate the magnetic field and contribute to the transmission of additional torque. A three-dimensional (3-D) finite element method (FEM) is used for the analysis of the magnetic field. In the paper a variables-decoupling method based on the sensitivity analysis of the design parameters is also presented to accelerate the optimization process of the proposed machine.

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“…It shows that the choices of design parameters have a significant influence on the torque transmission capability. A high-performance permanent magnetic (PM) gear is presented in [4] and [5] with calculation and measurement results using rotors made of spoke type instead of surface mounted type of PMs. From the calculated flux lines shown, these magnets, however, have a poor utilization, and large end-effects may exist.…”

Section: Introductionmentioning

confidence: 99%

A Quantitative Comparison Analysis of Radial-Flux, Transverse-Flux, and Axial-Flux Magnetic Gears

Chen

et al. 2014

IEEE Trans. Magn.

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The performances of three types of magnetic gears (MGs), which are radial-flux MGs, transverse-flux MGs, and axial-flux MGs, are quantitatively analyzed and compared using 3-D finite-element method of magnetic field and mechanical motion coupled computation. To fairly compare the torque capability of different topologies of MGs, all the MGs under study have the same gear ratio, the same outer diameter, and the same axial stack length. To maximize the torque density, several important structure parameters are optimized. Scenarios using different iron core materials and different magnetization directions of permanent magnets are also studied. Based on the comparative analysis, appropriate topologies of MGs that can achieve a torque density as high as 198 kNm/m 3 are suggested. The results in this paper give a good review of the torque density levels of different MGs, and hence they can be used as application guidelines.Index Terms-Axial flux, finite-element method (FEM), magnetic field, magnetic gear (MG), radial flux, torque density, transverse flux.

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A flux focusing ferrite magnetic gear

Cited by 24 publications

References 9 publications

Magnetic gear technologies: A review

Magnetic gear technologies: A review

A Novel Hybrid-Flux Magnetic Gear and Its Performance Analysis Using the 3-D Finite Element Method

A Quantitative Comparison Analysis of Radial-Flux, Transverse-Flux, and Axial-Flux Magnetic Gears

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