Reduction of core size and power losses of a soft composite magnetic gear

DİNDAR T., YILMAZ K.

Simulation Modelling Practice and Theory, cilt.142, 2025 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 142
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1016/j.simpat.2025.103135
  • Dergi Adı: Simulation Modelling Practice and Theory
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, Compendex, Computer & Applied Sciences, INSPEC, Civil Engineering Abstracts
  • Anahtar Kelimeler: Coaxial magnetic gear, Core loss, Finite element method, Soft composite material, Volumetric torque density
  • Ankara Üniversitesi Adresli: Evet

Özet

This study aims to achieve low-volume torque transmission with high efficiency by using a coaxial magnetic gear in vehicle powertrain systems. In this study, the magnetic properties of non-oriented electrical steel (M400–50A), cobalt alloy steel (Vacodur 50), and soft magnetic composite (Somoloy 700HR 5P) materials containing isolated iron particles are examined in detail. For the coaxial magnetic gear with a high-speed side of 6000 rpm, a low-speed side of 1800 rpm, and a 3.33:1 gear ratio, a magnetic comparison of the materials at low and high frequencies is presented. Power losses, volumetric torque density, and efficiency analyses for magnetic gears of the same size were performed using Ansys Maxwell 2D finite element software. The numerical analyses revealed that the Vacodur 50 provided superior performance compared to the other materials. It was found that without changing the magnet volume, the magnetic gear dimensions could be improved by approximately 2.67 % compared to M400–50A and by approximately 4.17 % compared to Somoloy 700HR 5P, while maintaining the same efficiency values. In conclusion, the use of Vacodur 50 in magnetic gears allows for more compact designs in vehicle powertrain systems than other materials.