Russian Electrical Engineering

, Volume 89, Issue 1, pp 13–16 | Cite as

An Ultra-High-Speed Starter–Generator with a Magnetic Core of Amorphous Iron for Unmanned Aerial Vehicles

  • V. E. Vavilov
  • O. A. Yushkova
  • Yu. V. Rakhmanova
  • Yu. V. Afanas’ev
  • N. K. Potapchuk


Results of research on an ultra-high-speed starter–generator with permanent magnets and tooth windings for unmanned aerial vehicles are presented. Technologies for manufacturing of a stator magnetic core of amorphous iron, as well as methods of selection of the number of pole pairs of an ultra-high-speed starter—generator, are studied, the advantages of amorphous iron are substantiated. A particular stage of the work is devoted to the problems of optimization of the slotted area of a starter–generator on the basis of the criterion of the presence of minimum losses in permanent magnets for eddy currents. To minimize these losses, a multicriterion optimization of the slotted area is performed using the genetic algorithms, as a result of which the losses were a quarter those of the initial variant. A cooling diagram of the synchronous machine in the structure of the turbojet engine is proposed. Thermal calculations are presented. A full-scale mockup with a capacity of 5 kW, rotation frequency of 60000 rpm, power density of 0.2 kg/kW, and coefficient of efficiency 96.4% was created to check the proposed design sequence, as well as to determine the efficiency of using amorphous iron. Initial tests of the experimental mockup backed up the theoretical conclusions and showed that the use of amorphous iron allows reducing the losses in the magnetic core of the stator by five to seven times.


unmanned aerial vehicles ultra-high-speed starter–generator magnetic core amorphous iron 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Secttnde, R.R., Macosko, R.P., and Repas, D.S., Integrate Engine-Generator Concept for Aircraft Electric Secondary Power, Washington, DC: Natl. Aeronaut. Space Admin., 1972, no. NASA/TM X 2579.Google Scholar
  2. 2.
    Yun, J., Cho, S., Cong Liu, H., Lee, H.-W., and Lee, J., Design of electromagnetic field of permanent magnet generator for VTOL series-hybrid UAV/2015, The 18th Int. Conf. on Electrical Machines and Systems, ICEMS 2015, January 18 2016, Piscataway, NJ: Inst. Electr. Electron. Eng., 2016.Google Scholar
  3. 3.
    Vavro, J., Kianicová, M., Vavro, J., Jr., and Vavrová, A., Modal and frequency analysis for rotor blades of turbojet engine TJ100, Univ. Rev., 2013, vol. 7, no. 4.Google Scholar
  4. 4.
    Harris, M.M., Jones, A.C., and Alexander, E.J., Miniature turbojet development at Hamilton Sundstrand: The TJ-5, TJ-120 and TJ-30 turbojets0, 2nd AIAA “Unmanned Unlimited” Systems, Technologies, and Operations, September 15–18, 2003, San Diego, 2003.Google Scholar
  5. 5.
    Elektrooborudovanie letatel’nykh appratov (Electrical Equipment of Aircrafts), Gruzkov, S.A., Ed., Moscow: Mosk. Energ. Inst., 2005.Google Scholar
  6. 6.
    Eremin, I.V., Tikhonov, A.I., and Popov, G.V., Proektirovanie silovykh transformatorov s serdechnikom iz amorfnoi stali (Engineering of Power Convertors with Amorphous Steel Rods), Ivanovo: Ivanovsk. Gos. Energ. Univ., 2014.Google Scholar
  7. 7.
    Gecha, V.Ya. and Zakharchenko, A.B., New technical solutions for creation a high-speed energy efficient power generator, Vopr. Elektromekh., 2012, vol. 130, no. 5.Google Scholar
  8. 8.
    Wang, Z., et al., Development of a permanent magnet motor utilizing amorphous wound cores, IEEE Trans. Magn., 2010, vol. 46, no. 2.Google Scholar
  9. 9.
    Wang, Z., et al., Development of an axial gap motor with amorphous metal cores, IEEE Trans. Ind. Appl., 2011, vol. 47, no. 3.Google Scholar
  10. 10.
    Ponomareva, L.N., Rumyantsev, M.Yu., and Sizyakin, A.V., Computer simulation of high-speed electric turbomachines for autonomous power generation systems, Materialy mezhdunarodnoi nauchno-prakticheskoi konferentsii “Innovatsii na osnove informatsionnykh i kommunikatsionnykh tekhnologii” (Proc. Int. Sci.-Pract. Conf. “Innovations Based on Information and Communication Technologies”), Sochi, 2012.Google Scholar
  11. 11.
    Uzhegov, N., Kurvinen, E., Nerg, J., Sopanen, J.T., and Shirinskii, S., Multidisciplinary design process of a 6-slot 2-pole high-speed permanent-magnet synchronous machine, IEEE Trans. Ind. Electron., 2016, vol. 63, no. 2.Google Scholar
  12. 12.
    Vavilov, V., Ismagilov, F.R., Hairullin, I., and Gusakov, D., High efficiency ultra-high speed microgenerator, Proc. 42nd Annual Conf. of the IEEE Industrial Electronics Society, Florence, 2016.Google Scholar
  13. 13.
    Vavilov, V.E., Ismagilov, F.R., Aiguzina, V.V., and Bekuzin, V.I., New method of optimal design of electrical rotating machines, Indones. J. Electr. Eng. Comput. Sci., 2017, vol. 5, no. 3.Google Scholar

Copyright information

© Allerton Press, Inc. 2018

Authors and Affiliations

  • V. E. Vavilov
    • 1
  • O. A. Yushkova
    • 1
  • Yu. V. Rakhmanova
    • 1
  • Yu. V. Afanas’ev
    • 1
  • N. K. Potapchuk
    • 1
  1. 1.Ufa State Aviation Technical UniversityUfa, BashkortostanRussia

Personalised recommendations