Synchronous machine exciter circuit model in a simultaneous field winding interface

This paper presents the implementation of a phase domain (PD) synchronous machine (SM) model through modified-augmented-nodal-analysis (MANA) formulation for the computation of electromagnetic transients. This formulation provides a direct and simultaneous electrical connection to the SM field winding, and enables accurate modeling of its exciter as an electrical side. Detailed exciter modeling can be used to study exciters transient performance and potential failure conditions in its circuit components. This paper also presents and tests a simple current source interface for existing dq0-type SM machine models with control signal input for field control. Realistic test cases are used to validate and compare the proposed models.