A Magnetic Network Approach to the Transient Analysis of Syncronous Machines

The technique for the simulation of the dynamic behaviour of rotating machines presented in the paper is based on an equivalent circuit representation of the magnetic configuration. The circuit parameters are obtained by a preliminary automated sequence of magnetostatic FEM analyses and take into account the local magnetic saturations. The adopted solution technique is based on an invariant network topology approach: its application, here presented for the operation analysis of a low-power synchronous generator, allows a great reduction of the calculation time in comparison with a commercial FEM code for the transient simulation