| Abstract |
Sophisticated control techniques for electrically excited synchronous machines need precise, but easymodels. Non-ideal characteristics may appear, if the machine shows multiple geometric and/or saturationinduced saliencies. In contrast to the conventional modelling approach, a novel stator-oriented magneticcircuit approach is used to deduce a nonlinear machine model with time-variant parameters, which makesit possible to account for multiple geometric and saturation induced saliencies systematically. Using thismethod one can find systematic conditions whether the cross saturation effect can occur. Moreover thenew modeling technique leads to new insights for the interpretation of the resulting differential equationsin the field oriented coordinates. One finds that both the differential and absolute inductances are relevantfor torque generation in the machine. |
