Improved modelling of a distributed anisotropy synchronous reluctance machine

The mathematical modeling of a DA synchronous reluctance machine is considered. The model refers to the more general case, taking the presence of slots in the stator structure into account. The resulting linear second order differential equation with periodic coefficients gives the rotor magnetic potential distribution on the rotor surface, once the static MMF is given. The induction value in the rotor iron is also calculated, in order to account for the additional rotor iron losses enhanced by stator slots. An approximated analytical solution is found, in a particular case, and the calculated results are compared with experimental ones. Practical suggestions are given to overcome the rotor losses problem.<>