The use of high temperature superconductor bulk in a co-axial magnetic gear

Cansız, Ahmet; Akyerden, Emre

doi:10.1016/j.cryogenics.2019.01.008

Cited by 6 publications

(5 citation statements)

References 25 publications

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“…Magnetic gears are potential contestant to reduce all given issues faced by conventional gears. For example, magnetic gears have ability to convey rotational speed exclusive of any mechanical interactions and have no drawbacks in situation of overwork [41]. Different ways are there for the manufacturing of mechanical and magnetic gears.…”

Section: Htsc In Co-axial Magnetic Gearmentioning

confidence: 99%

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High Temperature Superconductors: Materials and Applications

Hasan

2022

Superconductors

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A ceramic high temperature superconductor called cuprate was discovered in 1986 by Bednorz and Muller at 135 K critical temperature (Tc). Ladik and Bierman demonstrated the idea of high temperature superconductivity (HTSC) by essential excitation of electrons in one chain of double standard DNA. The cuprates are consisted of stiff, fragile, and hard properties which are considered as the negative impact of cuprates superconductors. With the passage of time such drawback were removed and the cuprate superconductors were made capable for various applications. The breakthrough came in the history of superconductors when the iron based HTSC were discovered in 2006. High temperature H2S superconductors are designed at high pressure and Tc greater than 200 K in 2015. From the time of discovery of HTSC, superconductivity is used in different types of fields such as medical, electrical, magnetic, optics, recording media, microwave and communication devices.

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Section: Htsc In Co-axial Magnetic Gearmentioning

confidence: 99%

“…The rule of function is probably similar in both systems. Figure 2 (a) and (b) illustrates the working mechanisms of both mechanical and magnetic gears, respectively [41].…”

Section: Htsc In Co-axial Magnetic Gearmentioning

confidence: 99%

High Temperature Superconductors: Materials and Applications

Hasan

2022

Superconductors

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“…Kim et al [24] proposed a new type of magnetic modulator blocks, which improved the torque density but its torque ripple also increased, which makes the magnetic gear very unstable when transferring torque. Cansiz et al [25] proposed to use hightemperature superconductors to be installed in the modulation ring. According to the non-magnetic characteristics of high-temperature superconductors, the torque transmission performance is increased.…”

Section: Generatormentioning

confidence: 99%

Analysis of Electromagnetic Performance of Modulated Coaxial Magnetic Gears Used in Semi-Direct Drive Wind Turbines

Wang¹,

Qian²,

Xu³

et al. 2021

Energy Engineering

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Wind turbine is a key device to realize the utilization of wind energy, and it has been highly valued by all countries. But the mechanical gear transmission of the existing wind power device has the disadvantages of high vibration and noise, high failure rate, and short service time. Magnetic field modulation electromagnetic gear transmission is a new non-contact transmission method. However, the conventional modulation magnetic gear has low torque density and torque defects with large fluctuations. In order to overcome the gear transmission problems of the existing semi-direct drive wind power generation machinery and improve the electromagnetic performance of the traditional magnetic gear transmission, this paper proposes a new transmission scheme of a non-contact semi-direct drive wind generator with a surface mount Halbach array modulated magnetic gear method, and considers the electromagnetic properties of the semi-direct drive modulation magnetic gear of the wind turbine. The finite element software is used to construct the model of the surface-mounted Halbach array magnetic gear and the conventional gear, analyzed the distribution of magnetic field lines of the two magnetic gears, calculated the air gap magnetic flux density of the inner and outer air gap, and obtained the main harmonics of the inner and outer air gap magnetic density; calculated the static torque and steadystate operating torque of the inner and outer rotors in the model, compared the air gap flux density, harmonics and torque of the magnetic gears. The simulation results show that the magnetic field modulation type magnetic gear of the surface mount Halbach array magnetic gear method improves the magnetic induction waveform of the inner and outer air gap, reduces the pulse torque fluctuation, and has a 60% higher static torque. Applying it to semi-direct drive wind power generation equipment not only overcomes the shortcomings of mechanical gears, but also has higher electromagnetic performance. Therefore, the surface-mounted Halbach array modulated magnetic gear can be used to replace the mechanical gearbox in the semi-direct drive wind power generation equipment.

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“…CMG with high temperature superconducting (HTS) bulks were also recently presented in [8,9], which have high torque density. The linear MG with HTS bulks is presented in [10], and magnetic flux density and thrust force transmission capacity are higher than the conventional MG.…”

Section: Introductionmentioning

confidence: 99%

A New Structure for the Coaxial Magnetic Gear With HTS Bulks for Fitness Car

Wang¹,

Jing²

2022

PIER Letters

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This paper proposes a novel coaxial magnetic gear (CMG) with eccentric permanent magnet structure and unequal Halbach arrays for achieving sinusoidal air-gap flux density and high output torque. The proposed model has a high temperature superconducting (HTS) bulks to replace the epoxy resin in the conventional stationary ring. According to the Meissner effect and one-sided field, the HTS bulks could enhance the modulation effect. The permanent magnets (PMs) on the inner and outer rotors are distributed in Halbach array, in which the PMs are arranged regularly on the outer rotor, and the inner rotor is an eccentric structure. So the inner nonuniform air gap can be obtained. The proposed model with the pole pairs of 4 and 17 for the inner and outer rotors is established, and using finite element analysis (FEA) a calculated torque is up to 350.8 N • m. It is 2.16 times of the torque of conventional CMG.

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The use of high temperature superconductor bulk in a co-axial magnetic gear

Cited by 6 publications

References 25 publications

High Temperature Superconductors: Materials and Applications

High Temperature Superconductors: Materials and Applications

Analysis of Electromagnetic Performance of Modulated Coaxial Magnetic Gears Used in Semi-Direct Drive Wind Turbines

A New Structure for the Coaxial Magnetic Gear With HTS Bulks for Fitness Car

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