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Energy efficiency improvement of electric machines without rare-earth magnets

Prakht, Vladimir ; Ibrahim, Mohamed ; Kazakbaev, Vadim

2023

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  • Título:
    Energy efficiency improvement of electric machines without rare-earth magnets
  • Autor: Prakht, Vladimir ; Ibrahim, Mohamed ; Kazakbaev, Vadim
  • Assuntos: Building and Construction ; Control and Optimization ; Electrical and Electronic Engineering ; Energy (miscellaneous) ; Energy Engineering and Power Technology ; Engineering (miscellaneous) ; Renewable Energy, Sustainability and the Environment ; Technology and Engineering
  • Notas: ISSN: 1996-1073
    ENERGIES
  • Descrição: Electric motors are one of the largest consumers of electricity and are responsible for 40–45% of the world’s energy consumption. In some applications, this proportion is even higher. For example, in industry, electric motors are responsible for about 70% of electricity consumption. Therefore, reducing the energy consumption of electric motors is critical both in terms of saving limited fossil fuels and in terms of reducing the load on national electricity networks. In addition, reducing energy consumption is important in terms of mitigating the impact of human activities on the environment. It is known that the magnetic flux generated by a coil with current is proportional to the product of the area of the pole covered by the coil and the cross-section of the winding wire, that is, the linear dimensions of the coil to the fourth power. The flux created by a permanent magnet is proportional to its volume, that is, its linear dimensions to the third degree. For this reason, electrical machines with high-coercivity rare-earth permanent magnets are potentially the most compact and energy efficient. At the same time, the cost of rare earth magnets is high, they are supplied by only a few suppliers, the raw material extraction process for their manufacture is harmful to the environment and there are problems with disposal. This gives good motivation for developing electric machines without rare earth magnets [1,2,3,4,5,6,7,8,9,10].
  • Data de criação/publicação: 2023
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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