A Review of Magnetic Gear Technologies Used in Mechanical Power Transmission

Ruiz-Ponce, Gerardo; Arjona, M. A.; Hernández, C.; Escarela‐Perez, R.

doi:10.3390/en16041721

Cited by 24 publications

(13 citation statements)

References 160 publications

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“…In power plants with an installed capacity of several mega watts, such as wind power, the use of magnetic gears instead of reduction gearboxes can be aimed at achieving technical ad vantages and overcoming the technological difficulties existing in the industry in the production of highquality largediame ter gears for multimegawatt class gearboxes [12,13]. The complex technology of gear production increases the risk of using these devices [14]. At the same time, the production of magnetic gears as electromechanical devices requires the de velopment of advanced technologies in machining and can be carried out on the existing base for the production of electric machines.…”

Section: Electrical Complexes and Systemsmentioning

confidence: 99%

Mathematical modeling of a magnetic gear for an autonomous wind turbine

Kovalenko,

Tkachuk

et al. 2024

Nauk. visn. nat. hirn. univ.

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Purpose. Development of a two-dimensional field mathematical model of a magnetic gearbox operating as part of a low-power wind turbine for the purpose of evaluating its parameters and characteristics and optimizing geometric parameters from the point of view of electromagnetic torque pulsations. Methodology. To carry out the research, the methods of the general theory of electromechanical energy converters, numerical methods of mathematical modeling based on the finite element method, numerical solution of nonlinear differential equations, and methods of spectral analysis to estimate pulsations of the electromagnetic torque were used in the work. Findings. The paper developed a two-dimensional numerical field mathematical model of a magnetic gearbox for an autonomous wind turbine. The model was developed to evaluate the parameters and characteristics of the magnetic gear, as well as to evaluate the influence of the design parameters on the magnitude of the electromagnetic torque and the magnitude of the pulsations of the electromagnetic torque. The effect of the configuration of permanent magnets, the parameters of the ferromagnetic inserts of the magnetic flux modulator and the size of the air gap was investigated in the paper. The obtained results show that there is an optimal configuration of permanent magnets and ferromagnetic elements of the magnetic flux modulator in which the maximum electromagnetic torque and minimum pulsations are achieved. Changing the parameters of the magnetic system affects the dynamics of the magnetic gear, its reliability and efficiency, therefore configuration optimization is an important task in the design, development and implementation of such systems. Originality. A two-dimensional field mathematical model of the magnetic gear has been developed, which makes it possible to estimate the change in its parameters and characteristics when the geometric dimensions change. This allows investigating the influence of various parameters of the magnetic system, such as the height of the permanent magnets and the width of the ferromagnetic inserts, on the electromagnetic torque. This makes it possible to obtain the optimal configuration of the system to achieve the optimal value of the torque and minimal pulsations and to determine the regularity of the change of the electromagnetic torque and other parameters of the gearbox under different operating modes in the future. Practical value. The simulation results indicate the prospects of industrial implementation of magnetic gaers as part of a wind power plant, and the obtained research results indicate the possibility of optimizing the design of magnetic gears in order to increase their reliability and efficiency.

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Section: Electrical Complexes and Systemsmentioning

confidence: 99%

Mathematical modeling of a magnetic gear for an autonomous wind turbine

Kovalenko,

Tkachuk

et al. 2024

Nauk. visn. nat. hirn. univ.

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“…where T 1 (1) is the left-side torque and, in this case, the smaller diameter, which is calculated with the axial length equal to the actual 3D length; T 1 (2) is the right-side torque and, in this case, the larger diameter, which is calculated with the axial length equal to the actual 3D length. The two 2D torques must be calculated with the same axial length.…”

Section: Governing Equations For the Magnetic Fields Of The Ccmgmentioning

confidence: 99%

“…Recent developments in magnetic materials and technologies have made magnetic gears (MGs) attractive for many researchers and developers [1][2][3][4][5][6][7][8][9][10][11][12]. MGs are potentially usable in many applications, such as wind and marine renewable energy systems [2,3], transportation [7][8][9], aerospace [10,11], and underwater propulsion [12], especially where direct mechanical coupling between rotating shafts is undesirable, as it causes mechanical wear and vibration and acoustic noise and requires lubrication, periodical maintenance, etc.…”

Section: Introductionmentioning

confidence: 99%

“…MGs are potentially usable in many applications, such as wind and marine renewable energy systems [2,3], transportation [7][8][9], aerospace [10,11], and underwater propulsion [12], especially where direct mechanical coupling between rotating shafts is undesirable, as it causes mechanical wear and vibration and acoustic noise and requires lubrication, periodical maintenance, etc. [1][2][3][4][5][6]. MGs are characterized by a high transmission efficiency and reliability, natural overloading protection, reduced noise and vibration, maintenance-free operation, lack of friction wearing and lubrication requirements, lack of mechanical contact losses, physical isolation between the rotating elements, etc., which make MGs an attractive alternative to mechanical gears [7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design Aspects of Conical Coaxial Magnetic Gears

2023

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In this paper, a new design of a conical coaxial magnetic gear was proposed. Conical magnetic gears are considered a logical link between the radial- and axial-field coaxial designs. The modeling of magnetic torques based on the 3D finite element method was developed. The design parameter variations of the conical coaxial magnetic gear were determined and discussed. The magnetic torque density was calculated and compared with that of a cylindrical coaxial magnetic gear with the same size and materials used. An optimal cone angle based on the air-gap length was proposed. Multistage conical coaxial magnetic gears were proposed as a sequence of coupled rotors with increased torque density and reduced magnetic reluctance. The proposed conical coaxial magnetic gears are more compact in size and suitable for integration with electrical machines and variable transmissions.

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“…Designing this class of converters became possible owing to the increase in power and the development of new types of highly coercive permanent magnets. Magnetic transmissions [1] are used in mechanisms and devices characterized by a low speed of rotation: wind energy, automobile construction, shipbuilding, oil production, chemical and food industry, etc. These mechanisms are characterized by a low rotation frequency.…”

Section: Introductionmentioning

confidence: 99%

Construction of the mathematical model of magnetic transmission for an autonomous wind power plant

Kovalenko,

Tkachuk

et al. 2024

EEJET

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The object of research is electromagnetic and mechanical processes in magnetic transmission for an autonomous wind power plant of small power. The use of magnetic transmission as part of an autonomous wind power plant makes it possible to improve the reliability and efficiency of such a system. In the current work, a study of magnetic transmission as part of an autonomous wind power plant was carried out to investigate the parameters and characteristics of magnetic transmission. This paper reports the construction of a numerical simulation mathematical model of a magnetic reducer operating as part of an autonomous wind power plant with a permanent magnet generator. The model takes into account discrete structure of internal and external rotors and modulator; changes in model parameters when input parameters change. It also takes into account losses, change of load angle and electromagnetic moment; the effect of changing the generator load. The built model of the magnetic reducer system differs in that the change in the generator load leads to a shift of the operating point on the mechanical characteristics of the rotor of the wind power plant (WPP). The model also works in the opposite direction: changes in wind parameters affect power, voltage, current, and electromagnetic moment. With the help of the model built, the parameters and characteristics of not only the magnetic reducer but also other components of the system were investigated. The efficiency at the output of the electric generator was determined, which is ≈75 % at a load of 2.0 kW. The magnetic transmission moment at a wind speed of 7.8 m/s for the high-speed rotor is 0.91 N∙m, and the low-speed rotor is 7.8 N∙m, which corresponds to a transmission ratio of 8.6. This expands opportunities for exploratory research

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A Review of Magnetic Gear Technologies Used in Mechanical Power Transmission

Cited by 24 publications

References 160 publications

Mathematical modeling of a magnetic gear for an autonomous wind turbine

Mathematical modeling of a magnetic gear for an autonomous wind turbine

Design Aspects of Conical Coaxial Magnetic Gears

Construction of the mathematical model of magnetic transmission for an autonomous wind power plant

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