Triple-speed coaxial magnetic gear for wind turbine applications: introduction and comprehensive analysis

Moghimi, Ali; Aliabadi, Mahmood Hosseini; Farahani, H.

doi:10.1108/compel-01-2022-0001

Cited by 5 publications

(2 citation statements)

References 30 publications

(55 reference statements)

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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].…”

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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“…A three-speed coaxial magnetic reducer for wind turbine applications: an introduction and a comprehensive analysis were investigated by the authors of [8]. The principle of construction of a three-speed magnetic transmission is presented, its parameters and characteristics are analyzed.…”

Section: Literature Review and Problem Statementmentioning

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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