TIME-VARIATION OF FORCES IN A SYNCHRONOUS MACHINE USING ELECTRIC COUPLED NETWORK MODEL

Radial forces between stator teeth and rotor claw inside a claw-pole a lternator are investigated here, Typically three dimensional, the comp lete machine has been modelled as a coupled electric and magnetic circ uit, with the aim of saving simulation time. Radial forces are obtaine d for several rotation speeds and stator currents. These results are c ompared with those of a 3D finite element analysis package, considered as reference results. A few typical results are also compared with me asurements. Accuracy is sufficient to assess that the permeance networ k models, taking into account nan linearities such as magnetic saturat ion, electronic commutations, and rotor movement, realise a good compr omise between simulation time and precision.