Magnetic Design Aspects of the Trans-Rotary Magnetic Gear

Pakdelian, Siavash; Frank, Nicolas; Toliyat, H.A.

doi:10.1109/tec.2014.2361289

Cited by 71 publications

(21 citation statements)

References 9 publications

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“…In addition, as shown in [18], a narrow thread can result in a poor shear stress for the TROMAG. Especially, as the air gap is increased for the larger systems, there is a need for a longer pole pitch to maintain the shear stress at its optimum.…”

Section: ) Choice Of Pole Pitchmentioning

confidence: 97%

“…Design Procedure of a MITROMAG 1) Design of the TROMAG: Aspects of magnetic design of a TROMAG are discussed in detail in [18]. Main conclusions of that paper are summarized as follows.…”

Section: B Design Constraints Constants and Variables Of A Mitromagmentioning

confidence: 99%

“…Principles of operation of the TROMAG [15] and its magnetic design [16]- [18] have been presented in earlier publications. This paper aims to show that for high-force, low-speed load characteristic, the proposed approach; that is, integrating a TROMAG and a rotary machine, which hereafter is referred to as MITROMAG for the ease of reference, can significantly save on weight and cost of the required material (ferromagnetic iron, copper, and magnet) compared to a direct drive linear PM machine that is designed for the same force and speed.…”

Section: Introductionmentioning

confidence: 99%

“…This paper aims to show that for high-force, low-speed load characteristic, the proposed approach; that is, integrating a TROMAG and a rotary machine, which hereafter is referred to as MITROMAG for the ease of reference, can significantly save on weight and cost of the required material (ferromagnetic iron, copper, and magnet) compared to a direct drive linear PM machine that is designed for the same force and speed. It is shown in [18] that with typical magnet material and dimensions, shear stress of a TROMAG can reach almost 10 times that of a conventional PM linear machine. Intuitively, such superiority should hold a MITROMAG significantly lighter and compacter than a linear machine even after adding the cost and weight associated with the rotary machine that needs to be added to the TROMAG, given that the rotary machine operates at high speed and low torque.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Design of an Electric Machine Integrated with Trans-Rotary Magnetic Gear

Pakdelian¹,

Deshpande²,

Toliyat³

2015

IEEE Trans. Energy Convers.

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Design aspects of the trans-rotary magnetic gear (TROMAG) integrated rotary machine are discussed in this paper, with particular focus on optimizing system cost and weight. Analytical models are used for design of the TROMAG. Optimal designs of the rotary machine are found by using a populationbased genetic algorithm and two-dimensional finite-element analysis and thermal considerations. Weight, volume, and cost of the resultant system are then compared with the Pareto-optimal set of a permanent magnet linear tubular machine that is designed for the same force and speed specification. It is shown in this paper that, for high-force low-speed reciprocating motion applications, an electromechanical motion system consisting of a TROMAG and a rotary electric machine can far surpass a conventional direct drive linear machine in terms of weight, volume, and initial and operating cost.Index Terms-Finite-element analysis (FEA), linear permanent magnet (PM) machines, magnetic gear, trans-rotary magnetic gear.

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Section: ) Choice Of Pole Pitchmentioning

confidence: 97%

“…Design Procedure of a MITROMAG 1) Design of the TROMAG: Aspects of magnetic design of a TROMAG are discussed in detail in [18]. Main conclusions of that paper are summarized as follows.…”

Section: B Design Constraints Constants and Variables Of A Mitromagmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Design of an Electric Machine Integrated with Trans-Rotary Magnetic Gear

Pakdelian¹,

Deshpande²,

Toliyat³

2015

IEEE Trans. Energy Convers.

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“…Scholars have done a lot of research on magnetic gear. Pakdelian et al studied a trans-rotating magnetic gear by two-dimensional and three-dimensional finite element method, analyzed piecewise spiral effect, permanent magnet diamagnetic, permanent magnet size, proportion, and flux density distribution [10]. Some studies investigated the vibration and noise characteristics of the field modulation magnetic gear by the electromagnetic forces in the field modulation magnetic gear [11].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Number of Pole Pairs on Torque Ripple of Magnetic Gear

Jing¹,

Huang²

2019

PIER M

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Field modulation magnetic gear is a transmission device with broad development prospects. It has the advantages of no friction, no pollution, low maintenance, and easy installation. Magnetic gear models with different gear ratios are established. The input and output torque waveforms of different models are compared. The influences of the number of pole pairs of the inner rotor (P 1) and the number of pole pairs of the outer rotor (P 2) on torque ripple are analyzed. According to the principle of magnetic field modulation, the torque ripple of magnetic gear is greatly affected by P 1 and P 2. Research results show that the torque ripple can be effectively reduced by selecting the magnetic gear with P 1 = 4, P 1 /P 2 = 1/(n + 0.25) or 1/(n + 0.75) (n is a natural number).

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