Time-Stepping Finite Element Modeling of a Synchronous Turbo-Generator

This paper presents methodology for modelling a synchronous turbo-generator using the Finite Element Method (FEM) in Altair Flux software. A detailed workflow is provided, covering geometry creation, material assignment, meshing strategies, boundary condition implementation, and solver configuration. The modeling process includes defining the stator, rotor, air gap, and damper winding, along with circuit connections and mechanical constraints. Advanced meshing techniques, including line, transfer, and linked meshes, are applied to ensure numerical accuracy in time-step simulations. Proper boundary conditions, such as periodicity and infinite box, are implemented to optimize computational efficiency. The configured FEM model is solved using a transient magnetic solver, and key simulation results, including current waveforms, developed electromagnetic torque and speed response, are extracted for analysis. This systematic approach provides an accurate and reliable framework for synchronous machine modeling, enabling performance evaluation and optimization.