Analytical Calculation/Optimization of Ironless Motor Structure

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SUMMARY

The discussion focuses on the analytical calculation and optimization of the uniformity of a magnetic field generated by an array of neodymium bar magnets, specifically with dimensions of 10mm depth and 2300mm height. The arrangement requires maintaining a constant spacing of no more than 4.25mm between magnets while maximizing their width within a total array span of 3400mm to 3800mm. The participant seeks to apply the Coulombian model to achieve an exact solution for ironless motor structures but has encountered challenges in adapting the model to their specific geometry.

PREREQUISITES
  • Understanding of magnetic field uniformity principles
  • Familiarity with neodymium magnet properties and configurations
  • Knowledge of the Coulombian model in magnetic applications
  • Basic skills in geometric optimization techniques
NEXT STEPS
  • Research the application of the Coulombian model in magnetic field optimization
  • Explore geometric optimization methods for magnetic arrays
  • Investigate the effects of magnet spacing on magnetic field uniformity
  • Study existing literature on ironless motor structures and their design principles
USEFUL FOR

Engineers, researchers, and designers involved in magnetic field optimization, particularly those working with neodymium magnets and ironless motor structures.

thadman
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I'm interested in calculating (followed by optimizing) the uniformity of a magnetic field generated by an array of neodymium magnets.

Let us assume we have an array of neodymium bar magnets,

-each with a constant depth (10mm) and height (2300mm).

-Multiple segments (with alternating poles) may satisfy the total depth requirement (10mm).

-The width of the magnets is allowed to vary, however the spacing between them must remain constant with respect to height.

-The spacing between the magnets must not exceed a finite width (4.25mm) and should be maximized.

-The distance between the centers of adjacent gaps also must not exceed a finite width (4.25mm).

-The bar magnets are arranged to be parallel to one another.

-The total array must span a width between 3400mm and 3800mm.

I am interested in maximizing the uniformity of the magnetic field within the gaps between the magnets.

It appears an exact solution is available for ironless motor structures (utilizing the Coulombian model?), however I have been unable to apply the approach towards my specific geometry.

http://hal.archives-ouvertes.fr/docs/00/41/33/52/PDF/paper-ironless-machines.pdf

Any thoughts?
 
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Nice work and paper! Were you able to publish this work after you did it?
 

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