Modélisation analytique multiphysique pour la conception optimale ...

Abstract
During the last years, permanent magnets synchronous motors have become
a reference in the industrial world, both from the economical and
the technical point of view, because of their very good performance in
both regards. Thus, application of specific methodologies and algorithms
during the design phase has become a must.
In this thesis, the analytical modelling of permanent magnet synchronous
motors for stator configurations with and without teeth is presented. Several
physical aspects, such as magnetic, thermal and electrical phenomena,
are taken into account. For the magnetic part, several models are
presented which all have their own areas of application. Some of them
take the magnetic saturation of the ferromagnetic parts into consideration.
The simplified thermal model is based on an equivalent Kirchhoff
circuit in which convection and radiation are included. Concerning the
determination of the electrical characteristics of slotless machine configurations,
the determination of the back-emf and of the inductances using
the method of images are presented.
Special emphasis has been placed that the tendencies of the variations
of the modelled phenomena as they are observed with changes in other
parameters or criteria are correctly represented. This is almost more
significant that the accuracy of the model itself. The models are validated