Analytical Modelling of No-Load Density in Surface Mounted Permanent Magnet Motor

Frédéric Dubas (1) , Christophe Espanet (1) , A. Miraoui (2)

1 FEMTO-ST - Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174)
2 SET - Laboratoire Systèmes et Transports

In this paper, the authors present an analytical calculation in order to predict the no-load flux density in surface mounted synchronous permanent magnet machines. This analytical model is based on two-dimensional analysis in polar coordinates and has been developed for both parallel and radial magnetization of the magnets. The no-load magnetic vector potential is established by solving Laplace/Poisson's equations using the Fourier's series and the method of separating variables. Two circular regions are considered: the Region.I, which is the air-gap modified by Carter's coefficient, and the Region.II, which includes the magnets and the air-spaces between magnets. The analytical results are compared with the ones obtained by a numerical analysis using the finite-element method (FEM).

Domaines: Energie électrique; Electromagnétisme

Frédéric Dubas, Christophe Espanet, A. Miraoui. Analytical Modelling of No-Load Density in Surface Mounted Permanent Magnet Motor. Aegean Conference on Electrical Machines and Power Electronics (ACEMP), May 2004, Istanbul, Turkey. pp.283-290. ⟨hal-00322428⟩