Analytical Design of On load Magnetic Flux Density and Flux-linkage in Radial Flux Air-cored Permanent Magnet Electrical Machine with a Double-sided Rotor

Document Type : Original Article

Abstract

- This Articlea radial magnetic flux density and flux-linkage of the redial flux Air-Cored permanent magnet electrical machine (RFAMP) with double-sided rotor can be calculated analytically using the subdomain analysis is provided. First, Analytical relationships of on load magnetic flux density and flux-linkage of this machine are presented with of poisson equations and, then, these relationships are validated by finite element numerical results in Maxwell 16.02 software. Comparison show that difference between fundamental component of radial magnetic flux density and flux-linkage of analytical relations and that of finite element results is less than 3%. Also, It is shown that in this machine type appeared even harmonics, the radial component of the magnetic flux density is not symmetrical, unit half cycle and Lack of attention to this subject in design of the machine can cause be inner or outer yoke magnetic saturation. In this article to calculate the flux linkage resulting from of the armature reaction all the components of winding conductor density distribution as well as in the calculation the flux linkage all radial components of the magnetic flux density is used. The relevant authorities of this research is only the first radial component of the magnetic flux density and the second component winding conductor used And the other component is ignored. It is shown that this topic compared with the relevant authorities 21% increase in flux linkage or inductance RFAPM machine that the number are significant in the study of magnetic saturation yokes. Worth noting that the study of the comparative results, only up to 17th harmonics and taking into account the higher harmonics can adapt better to have the finite element results

Keywords

References

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History

  • Receive Date: 13 February 2016
  • Revise Date: 06 March 2019
  • Accept Date: 19 September 2018
  • Publish Date: 23 July 2015

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