CALCULATION OF MAGNETIC LOSSES AND ENERGY EFFICIENCY OF A MAGNETIC GEARBOX WITH A MODULATED MAGNETIC FIELD
Grebenikov V. Podoltsev O. Tazhibaev А. Arynov N. Sakhno O.
April 2025Institute of Renewable Energy National Academy of Sciences of Ukraine
Vidnovluvana Energetika
2025#2025-AprilIssue 192 - 99 pp.
In this article, a simplified mathematical model is used to calculate magnetic losses in the ferromagnetic elements of a magnetic gearbox to analyze the distribution in space and time of magnetic induction in its core. This takes into account the peculiarities of using such a magnetic gearbox (multiplier) in a lowpower wind power plant. It is shown that when considering only the first harmonic components in the ωFe ω 2 distribution of the magnetomotive forces of both rotors and the specific magnetic conductivity of the air gap, the magnetic induction in the air gap contains six components that have different pole pitch, move with different angular velocities and in different directions. According to the results of the calculations, it is shown that when the modulator is used as a low-speed shaft connected to a wind turbine, in the steady-state mode, all components of magnetic induction in the moving coordinate system x of the modulator change with the same angular velocity = p ωFe, which depends on the number of pole pairs of the external rotor and the rotation speed of the modulator together with the wind turbine . Under these conditions, the magnetic losses in the ferromagnetic poles of the modulator are calculated. Based on these data and considering mechanical losses, an energy efficiency map of the magnetic gearbox is constructed, representing its efficiencys dependence on the modulator rotation speed and mechanical torque on its shaft. The constructed efficiency map of the magnetic gearbox is the basis for calculating the efficiency of the entire wind power plant containing such a gearbox. The calculation of the characteristics of the magnetic gear was carried out in the Simcenter Magnet software package. Bibl. 20, Fig. 5.
computer modeling , energy efficiency map of the gearbox , magnetic gearbox , magnetic losses , wind turbine
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Dnipro University of Technology, Dnipro, Ukraine
Institute of Transport Systems and Technologies of the National Academy of Sciences of Ukraine, Dnipro, Ukraine
LLC UMAY R&D, Astana, Kazakhstan
LLC Energoavtomatyzatsiya, Zaporizhzhia, Ukraine
Dnipro University of Technology
Institute of Transport Systems and Technologies of the National Academy of Sciences of Ukraine
LLC UMAY R&D
LLC Energoavtomatyzatsiya
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