Model of an ironless axial flux permanent magnet motor based on the field produced by a single magnet

Maxime Bonnet (1) , Yvan Lefèvre (2) , Jean-François Llibre (2) , François Defaÿ (3)

1 LAPLACE - LAboratoire PLasma et Conversion d'Energie
2 LAPLACE-GREM3 - Groupe de Recherches en Electrodynamique
3 DCAS - Département Conception et conduite des véhicules Aéronautiques et Spatiaux

The Lorentz force law is proposed as an alternative to the Maxwell stress tensor to calculate the torque of an ironless AFPM motor. This alternative allows calculating only the magnetic field produced by magnets. A model of this field based on the field produced by one magnet, the superposition principle and geometric transformations is proposed. The method is validated by full 3D FEA simulations and experimental measurements performed on a test bench.

Mots clés: Axial flux permanent magnet; Ironless; Torque; Bio-Savart’s law; Lorentz force law

Domaines: Energie électrique

Maxime Bonnet, Yvan Lefèvre, Jean-François Llibre, François Defaÿ. Model of an ironless axial flux permanent magnet motor based on the field produced by a single magnet. CEFC 2020, Nov 2020, Pisa, Italy. pp.0. ⟨hal-03113628⟩